Re: [meteorite-list] Nininger's Meteorite Museum Ruins

[John Hendry via Meteorite-list]

Karlis,

I swung past there in March last year on a bike trip. There is a gate across 
the old Route 66 road that provides access. The gate has a sign on it 
emphatically marked ‘No Trespassing’. Somebody more familiar with Arizona 
trespass laws might be able to advise of the possible consequences to flaunting 
the message. Certainly reachable if the sign is ignored (1/2 mile walk), though 
I wasn’t tempted myself. There’s some more info here… 
http://www.nuggetshooter.ipbhost.com/index.php?/topic/22334-road-closed-to-nininger-meteorite-museum/

Regards,
John

From:  Meteorite-list on behalf of "Meteoriti.LV via Meteorite-list"
Reply-To:  "Meteoriti.LV"
Date:  Friday, July 21, 2017 at 8:09 AM
To:  
Subject:  [meteorite-list] Nininger's Meteorite Museum Ruins

Dear Friends,

Could somebody tell if that is possible and how to reach the Ruins of the old 
Nininger's Meteorite Museum? I heard that the road is closed but is there any 
way to visit a place? 

In a few weeks time we will visit US for the great Solar Eclipse and we have 
included Barringer crater in our car trip. 
I have never been there at the site so I would appreciate any advise.
Thanks!

Best Regards,
Karlis Berzins
Meteoriti.LV
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[meteorite-list] Scottish meteor

[John Hendry via Meteorite-list]

News story with video hereŠ
https://www.pressandjournal.co.uk/fp/news/aberdeenshire/848907/video-amazing
-footage-exploding-meteor-aberdeenshire-taken-drivers-dashcam/

>From video footage, bearing to meteor from Sauchen roughly W by SW so around
120miles of land in that direction.



Regards,

John




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Re: [meteorite-list] Changes In 14C and Impacts

[John Hendry via Meteorite-list]

Sterling,

There is a bit (with references) about the astrobleme theory for the
Nastapoka Arc here... https://en.wikipedia.org/wiki/Nastapoka_arc
Consensus seems to be no evidence. Possible tectonic origin.

John Hendry

On 29/06/2015 10:07, Sterling K. Webb via Meteorite-list
meteorite-list@meteoritecentral.com wrote:

Paul, Ed, List,

The village is actually named Kitscoty.
https://en.wikipedia.org/wiki/Kitscoty

Kitscoty is named after a village in
Kent (U.K.) with a famous stone
megalithic structure, so while Googling
for a Kitscoty Structure you have to
distinguish which Kitscoty and what
kind of structure is meant.
http://albertacommunityprofiles.com/Profile/Kitscoty/2

The structure referred to is a proposed
rebound plateau of an impact south of
Kitscoty, Alberta, Canada:
http://www.meridianbooster.com/2009/03/18/did-a-massive-meteor-touch-down-
he
re

I don't know (and am not going to Google
myself to death finding out), but I recall
that Hudson Bay and the Canadian
Shield is very old crust, at least 2.0 to
2.5 billion years old.

It is bound to have evidence of a great
many impacts in that long time span,
but most, of ancient age. Plus, the
Canadian Shield has been scoured by
every ice age for billions of years, over
and over and over again. Only evidences
that can survive that will be found.

With typical human short-sightedness,
most theories of any explanation of a
feature in Northern Canada are always
referred to the last Ice Age, which is
only the last few million years, while
the Shield is immensely more ancient
and has been exposed for BILLIONS of
years.

Northern Canada contains a great
many craters; see:
http://www.thelivingmoon.com/43ancients/02files/Earth_Images_09.html#Steen

I can suggest another very ancient crater:
the south-southeastern coast of Hudson
Bay, above James Bay is a portion of
a perfect circle and it has a nice cluster
of islands at the geometric center of
that circle like the remnants of central
peaks. I've always thought that it could
be what's left of a very, very  ancient
 astrobleme. See map at:
http://www.worldatlas.com/aatlas/infopage/hudsonbay.htm

It's very suggestive. But evidence? I
know of none.

Sterling Webb
--

-Original Message-
From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com]
On
Behalf Of E.P. Grondine via Meteorite-list
Sent: Sunday, June 28, 2015 10:53 AM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] Changes In 14C and Impacts

Hi Paul - 

Thanks for the link to that paper.

I am looking forward to your comments on the Kiscoty structure.

My guess is that the depth of the ice sheet may be estimated from the
height
of the rebound, but I am incapable of performing detailed calculations
from
any formula you may know of.

My working assumption is that nearly all of the energy released from the
initial blast went into different processes which  melted the ice sheet -
such as the infra-red,  the boiling water returning to Earth, the hot
impact
dust returning, etc.

E.P. Grondine
Man and Impact in the Americas

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Re: [meteorite-list] Meteorite found in second Connecticut home

[John Hendry]

Will be in Paris for the weekend. Are there any museum meteorite collections 
there worth checking out?
Thanks,
John
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Re: [meteorite-list] Hammer fall term

[John Hendry]

Any hammer finds recorded? i.e. there's a big stone in the attic and a hole 
in the roof, but nobody saw it fall.


John


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Re: [meteorite-list] Hammer fall term (this poor poor horse)

[John Hendry]

Michael,

great expositon, and a good example of what I was thinking about. However I
am still failing to parse the language used to square with what would be the
normally understood meaning in the english language. If I may quote your
analysis here and there.


Let me put it this way - New Orleans is a recent example of an
unwitnessed hammer that is considered a fall.

Got it.


 In this particular case, nobody directly witnessed the fall or the damage
being done.

Understood.


if it is a
hammer in the true and accepted sense, then it could be called a
hammer fall or witnessed fall or observed fall or just a fall


Having cognitive issues at this juncture. If it isn't witnessed, but it is
considered a 'hammer fall', then how can 'hammer falls', in their entirity,
be a subset of witnessed or observed falls. Surely the definition of fall
must therefore include unobserved meteorite arrivals (i.e. unobserved hammer
falls).You cannot have a witnessed unwitnessed event. Well not in my book
anyway. Then again I am not Orwell.

Personally, I think it's bad nomenclature, but I can easily imagine how this
sort of stuff arises. A few weeks ago after reading some of the many Sutters
Mill accounts from the field I went for an idle stroll along a deserted
track in rural Ukraine. I noticed in the distance some semilustrous
subspherical objects, and for a while on my approach my imagination was
giving rise to mild tachycardia. On intimate inspection I found some nicely
dimpled droppings from a deer or something. After recovery from this
crushing disappointment, I thought it would be appropriate to propose a new
subclass of Leaverite called 'Meteorshite'. However thinking on this now,
all meteorshites would not necessarily be leaverites. A bedouin coming
across the wrong sort of Camel Donga (ok mixing continents here but give me
some latitude please), might not be thinking leaverite, he might be thinking
campfire for barbeque.

Regards,
John





- Original Message - 
From: Michael Gilmer meteoritem...@gmail.com

To: John Hendry p...@pict.co.uk
Cc: Meteorite List meteorite-list@meteoritecentral.com
Sent: Thursday, June 14, 2012 10:09 PM
Subject: Re: [meteorite-list] Hammer fall term (this poor poor horse)



Hi John and List,

Good question.  Let me attempt to answer.  If I fail, perhaps Capt.
Blood will chime in or another hammerhead will jump to the rescue.

All hammers are falls, because if a hammer falls and nobody is around
to notice it, it will never be discoveredand is therefore not a
hammer or a fall.

Let me put it this way - New Orleans is a recent example of an
unwitnessed hammer that is considered a fall.  When the New Orleans
meteorite fell, penetrated the house and left a path of minor
destruction (writing desk, etc), nobody was home.  The owners were out
and did not come home to find the cosmic damage until later.  In this
particular case, nobody directly witnessed the fall or the damage
being done.  If I recall correctly, there were no indirect witnesses
as well - no radar track, no fireball video, no other witnesses on the
ground.  The find was determined to be a fall based on - the freshness
of the material found, the testimony of the homeowners, and the
obvious damage caused by this material.

Met Bull states that the New Orleans meteorite is a fall, so it is
therefore a observed fall or witnessed fall in officially-approved
nomenclature and accepted use amongst the majority of collectors and
dealers.  Additionally, some hammerheads may refer to it as a hammer
fall.  Also of note, New Orleans is a single stone fall, therefore
the New Orleans meteorite is a hammer stone because it struck a
house and manmade objects.

Under different circumstances, the New Orleans meteorite may have gone
unnoticed and unreported.  The lower 9th Ward of New Orleans is
desolate today, as a result of lingering damage from hurricane
Katrina.  Large stretches of homes and businesses are vacant and
falling into disrepair.  There are squatters, homeless persons, gang
elements, and other transients that reside in the area.  The same is
true for other areas of New Orleans to varying degrees.  If the stone
had fallen in one of these houses, with no first-hand witnesses, it is
likely to lay undiscovered and be carted off to the landfill when the
city finally bulldozes the property.  In such a case, the fall and
damage were never noticed, it is never reported, no material is ever
recovered, and the meteorite is never officially recognized or named.

Also keep in mind, the criteria for officially approving a meteorite
as a fall has changed to some degree over the years.  Or could say,
the criteria was more rigidly enforced in some publications than
others.  There are several cases of witnessed falls where the witness
reports are several years or more removed from recovery of specimens
on the ground.  Some fall dates have uncertain dates or just a date
range (summer of 18xx, etc).  Some finds could be regarded as falls

Re: [meteorite-list] Meteorites delivered Earth's gold

[John Hendry]

Carl,

The earth's crust is under a continuous process of differentiation by
various processes. By differentiation I mean the separation and
concentration of the various elements. There are probably a multitude of
mechanisms that allow concentration of specific elements, and all three
rock types (sedimentary, igneous, and metamorphic) are formed by processes
that are capable of doing this. For instance..

Sedimentary processes (rivers, oceans, wind etc) can sort stuff out and
deposit it in different places due to density. Gold notably is
concentrated in this manner with placer deposits.

Igneous rocks are derived from molten magmas at depth in the earth's
crust. As the melt cools, depending on the pressure and temperature
regimes various minerals will crystallise out. At any given stage in the
cooling process the remaining melt will consist of the more volatile
constituents that still remain fluid (silica, water, CO2 etc), along with
the relatively unreactive or incompatible elements that don't easily
combine in the minerals that are precipitating. If the melt has a chance
to vent up a crack you get this siliceous solution migrating towards the
surface carrying incompatible stuff with it. As it gets closer to the
surface and cools the constituent elements are forced to precipitate at
some stage giving rise eventually to ore bearing quartz veins.

Gravity is also a big player in helping to physically differentiate a
cooling meltŠ Dunites (90% plus olivine) may be formed by olivine
precipitating out of a basaltic magma and falling to the bottom of the
magma chamber to form a thick deposit or 'cumulate'. Given a magma chamber
that doesn't vent or have fresh basaltic magma injected before it cools,
the very top layers of the cumulate body can get concentrated with all
sorts of rare stuff. I believe the south african ore body called the
Merensky Reef which is rich in the platinum group was formed along these
lines. Indeed the differentiation of the earth's interior into an
iron/(nickel?) core, outer dense mafic (silica poor) mantle, and felsic
(silica rich) granitic continental crust is driven in part by gravity.

Now on Earth, plate tectonics is a still active mechanism that is
continually recycling crust, bringing it from deep to the surface, or
melting and redifferentiating it.

Some of the larger asteroids presumably were molten long enough to undergo
a substantial degree of differentiation as evidenced by irons/pallasites
as analogues to the earth's inner/outer core material, but the mechanism
for exposing this material at the body's surface is probably catastrophic
impact, whereas the closest we get on Earth to sampling even the
moderately deep stuff is via ancient vulcanism like kimberlites.

But back to the original question which is an interesting one, whether
hydrothermal gold bearing quartz analogues exist on other bodies in the
solar system. Don't know but it wouldn't surprise me if Mars for instance
had them. It has patently had water and extensive volcanism. I think small
quantities of free quartz exist in some eucrites and basaltic shergotites
indicating sufficient differentiation to produce the mineral in some of
the parent bodies out there. Whether it has become further concentrated in
places with additional hydrothermal or magmatic processes is something I
don't know if there is any direct evidence for.

Maybe it's just very rare. Our planet has had a good 4 billion years of
active geology to push deep rocks to the surface, and take surface rocks
to the depths, and an active atmosphere to continually erode and expose
and redistribute material. We're still not exactly tripping over gold
bearing quartz, and you have to pick up an awful lot of random pebbles to
find a nugget.

Maybe our crust is gold poor relative to meteorites because we are
relatively overdifferentiated - maybe the bulk of it migrated to the core;
gold is dense and does alloy well with nickel. Is that a realistic
hypothesis?

Regards,
John






On 10/09/2011 16:36, cdtuc...@cox.net cdtuc...@cox.net wrote:

Paul, List,
It seems to me that much of the Gold found on Earth is accompanied by
Quartz.  In fact most of the finest Non-nugget specimens are usually
found in quartz.
That said; If this gold came from space then where did the quartz come
from and for that matter why is gold not found buried in chonditic rock
instead of quartz. . Quartz does not seem to be terribly abundant in
meteorites. 
Just curious why we don't find gold / quartz meteorites. What changed
meteorites? Do we have any witnessed falls of Gold meteorites?
Do these researchers consider the Quartz issue here?
Thanks.
Carl

--




  
Democracy is two wolves and a lamb voting on what to have for dinner.
Liberty is a well-armed lamb contesting the vote.





  

 

 Paul H. oxytropidoce...@cox.net wrote:
 Young Earth was sprinkled with precious metals
physicsworld.com, Sept. 7, 2011
http://physicsworld.com/cws/article/news/47116

Where does all 

Re: [meteorite-list] High Noon!

[John Hendry]

He has an explanation elsewhere in the auction textŠ

Keep in mind, too, that the negative symbol merely means less-than.
(Example: Ag (-7) means that Ag (Silver) is detected, and there is more
than 6ppm, but less than 7ppm).

Regards,
John



On 06/09/2011 16:30, MexicoDoug mexicod...@aim.com wrote:

Hi Steve,

I have a question about your data, which seem highly strabismal :

Silver, Gold and Palladium seem to all be listed by you as negative
concentrations; could you be kind enough to explain this odd claim /
data?  Because if there isn't a good explanation, the only conclusion
is that the tests you are doing are returning gibberish or instrumental
artifacts ... and cannot provide any support for your beliefs in
extraterrestrial sources.

Kindest wishes, Doug

Steve wrote:

...elemental PPM's (Parts-per-Million).  ...

Specimen #1: (394 grams) As posted on Ebay: Au (-9), Pt (29), Ag (-6),
Pd (-6), Fe (5,575), Zr (138), Sr (606), Rb (54), Pb (26), Zn (20), Cu
(156), Ni (66), Co (114), Ba (582), Cs (310).

Specimen #2: (6.0kgs); Au (-9), Pt (41), Ag (-7), Pd (-7), Fe (10.4K),
Zr (180), Sr (491), Rb (69), Th (9), Pb (62), Ni (65), Co (240), Mn
(4,402), Ba (998), Cs (151).






-Original Message-
From: Steve Curry cwhei...@gmail.com
To: wahlperry wahlpe...@aol.com; Walter L. Newton
new...@acrossthebow.com; mexicodoug mexicod...@aim.com; countdeiro
countde...@earthlink.net; daistiho daist...@hotmail.com;
stlouismeteorites stlouismeteori...@gmail.com; raremeteorites
raremeteori...@yahoo.com; meteorite-list
meteorite-list@meteoritecentral.com; JoshuaTreeMuseum
joshuatreemus...@embarqmail.com; yeomega yeom...@gmail.com;
mikestang mikest...@gmail.com; star_wars_collector
star_wars_collec...@yahoo.com; gmhupe gmh...@centurylink.net;
daniel_wray daniel_w...@comcast.net; sterling_k_webb
sterling_k_w...@sbcglobal.net; stevenarnold60120
stevenarnold60...@yahoo.com; axolotyis axolot...@gmail.com; Randy
Korotev koro...@wustl.edu; Randy L. Korotev r...@levee.wustl.edu;
John Wasson jtwas...@ucla.edu; James Wittke james.wit...@nau.edu;
Roger Warin roger.wa...@skynet.be; Ken Newton
magellon@gmail.com; Stuart McDaniel
actionshoot...@carolina.rr.com; Dr. Michael Zolensky
michael.e.zolen...@nasa.gov; Dr. Timothy McCoy mcc...@si.edu; Maria
Haas dragons...@msn.com; Anne Black impact...@aol.com; Carl Agee
a...@unm.edu; Chris A. Peterson pr...@higp.hawaii.edu; Dr. Alex
Ruzicka ruzic...@pdx.edu; Tim Stout tim_97...@yahoo.com; Galactic
Stone  Ironworks meteoritem...@gmail.com; kevin.righter-1
kevin.righte...@nasa.gov; Rainer Newberry rjnewbe...@alaska.edu;
Ted Bunch tbe...@cableone.net; ontheroad onther...@usairborne.com;
Moto Ito i...@lpi.usra.edu; Tomasz Jakubowski illae...@wp.pl; Ian A.
Franchi i.a.fran...@open.ac.uk; Zeus Crankypants
zeus.crankypa...@yahoo.com; Catherine (Cari) Corrigan
corrig...@si.edu; Matthew Benjamin matthew.benja...@colorado.edu;
lebofsky lebof...@lpl.arizona.edu
Sent: Tue, Sep 6, 2011 12:24 pm
Subject: High Noon!


Hi Boys  Girls;  You've all had a wonderful time, over past couple of
years, in trying to denounce my research, attacking my integrity,
defaming my character, and, most importantly, making absolute fools of
yourselves!  I've allowed this, and I've exhibited a great deal of
tolerance for your highly unprofessional, and grossly unethical
behavior, but, I will not tolerate your abuse of my family, friends,
and business colleagues.  YOU HAVE CROSSED THE LINE FOR THE LAST TIME!!
As an organization, that explicitly demands behavior above  beyond
reproach, it is quite apparent, that the IMCA does not enforce its own
policies.  Each  every member of this organization needs to hang their
heads low, in shame, for allowing the Administration of the IMCA to
engage, support, and condone this type of behavior by its membership.
This is not to say, that all members of the IMCA, exhibit this
abhorrent behavior.  I trust, that there are many members of high
integrity, honesty, sincerity, and commitment to the many sciences
surrounding meteoritics.  To those members, I ask that you take a stand
against those members, who have treated this organization with such
selfish disdain, and disregard of its charter.


IMCA member, Adam Hupe, recently raised a flag of protest, over my
use of the term, NWA 5000, in comparing our Uncompahgre Lunar
Feldspathic Breccia meteorite to his prized possession, purchased from
a Moroccan dealer.  Mr. Hupe seems to think the NWA 5000 is, somehow,
a title deserving of a Trademark!  For starters, Northwest Africa is
by geographical location  description, in Public Domain!  5000 is
merely an integer, or number, and cannot be trademarked.  It, too, is
considered Public Domain!  The US Trademark Office would, simply,
laugh at Mr. Hupe's submission.  It would not get any more embarrassing
for Mr. Hupe, than this!


   If Mr. Hupe, and other IMCA members, would like to end this, once
and for all, here is my challenge, and I will not accept any
substitutions, 

Re: [meteorite-list] Fwd: [2] Map, Radar Returns; Canada to Ohio Event - Aug. 8, 2011

[John Hendry]

Is that picture at 0:25 not an all sky camera image rather than a radar
screen?

Regards,
John

On 21/08/2011 14:06, MexicoDoug mexicod...@aim.com wrote:

The Video got over 50 views (up from 4) since I posted it a few minutes
ago ;-) 
 
For anyone headed into the Youngstown OH area:
  
Hermitage, OH  
N 41D 14M;  W 80D 26.5M
  
Kinsman, OH  
N 41D 26.5M; W 80D 35.5M
 
The map in the video shows the bolide cloud on radar (on the video at
0:25), that is more than enough to start the hunt.
  
Kindest wishes and best luck
Doug  
  
-Original Message-
From: MexicoDoug mexicod...@aim.com
To: Meteorite-list@meteoritecentral.com
Sent: Sun, Aug 21, 2011 2:37 pm
Subject: [meteorite-list] Map, Sonic Boom; Canada to Ohio Event - Aug.
8, 2011  
  
http://www.dailymotion.com/video/xklzie_meteorite-falls-in-ne-ohio_news
   
Well, here is something more to prime everyone!
   
Kindest wishes!   
   
Doug   
   
-Original Message-
From: MexicoDoug mexicod...@aim.com
To: Meteorite-list@meteoritecentral.com
Sent: Sun, Aug 21, 2011 4:02 am
Subject: [meteorite-list] Canada to Ohio Event - Aug. 8, 2011
   
Mike F wrote:
when news of an amazing new meteorite breaks In the next couple of
days, no one will give a crap.

Mike,

Don't bet or you will lose.  Find some of these supposed meteorites and
you can have 100 emails and customers lining up.

http://kstp.com/news/stories/s2247463.shtml?cat=1

Phil already posted another note about the Ohio bolide.  Is anyone
serious working on it?

Best luck in the field
Doug

PS, NASA's Men in Black led by Bill Cooke in Huntsville Alabama (NASA's
Meteoroid Environments Office) are the ones getting the press to be
contacted in case of finds of fragments:
http://www.nasa.gov/offices/meo/home/index.html
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Re: [meteorite-list] Fwd: [2] Map, Radar Returns; Canada to Ohio Event - Aug. 8, 2011

[John Hendry]

My apologies. I was looking at 0:19 and not 0:25. Map does indeed show
radar returns.

Regards,
John


On 21/08/2011 14:30, MexicoDoug mexicod...@aim.com wrote:

I haven't looked at the video since I posted it, but it wasn't a radar
primary data (that is easy to download and fool with if you want ...
the exact times are recorded).  There are two points superimposed on
the mentioned map showing the location of the radar returns according
to whoever did it (NASA?).
Kindest wishes
Doug


-Original Message-
From: John Hendry p...@pict.co.uk
To: MexicoDoug mexicod...@aim.com; Meteorite-list@meteoritecentral.com
Sent: Sun, Aug 21, 2011 3:25 pm
Subject: Re: [meteorite-list] Fwd: [2] Map, Radar Returns; Canada to
Ohio Event - Aug. 8, 2011


Is that picture at 0:25 not an all sky camera image rather than a radar
screen?

Regards,
John

On 21/08/2011 14:06, MexicoDoug mexicod...@aim.com wrote:

The Video got over 50 views (up from 4) since I posted it a few minutes
ago ;-)

For anyone headed into the Youngstown OH area:

Hermitage, OH
N 41D 14M;  W 80D 26.5M

Kinsman, OH
N 41D 26.5M; W 80D 35.5M

The map in the video shows the bolide cloud on radar (on the video at
0:25), that is more than enough to start the hunt.

Kindest wishes and best luck
Doug

-Original Message-
From: MexicoDoug mexicod...@aim.com
To: Meteorite-list@meteoritecentral.com
Sent: Sun, Aug 21, 2011 2:37 pm
Subject: [meteorite-list] Map, Sonic Boom; Canada to Ohio Event - Aug.
8, 2011

http://www.dailymotion.com/video/xklzie_meteorite-falls-in-ne-ohio_news

Well, here is something more to prime everyone!

Kindest wishes!

Doug

-Original Message-
From: MexicoDoug mexicod...@aim.com
To: Meteorite-list@meteoritecentral.com
Sent: Sun, Aug 21, 2011 4:02 am
Subject: [meteorite-list] Canada to Ohio Event - Aug. 8, 2011

Mike F wrote:
when news of an amazing new meteorite breaks In the next couple of
days, no one will give a crap.

Mike,

Don't bet or you will lose.  Find some of these supposed meteorites and
you can have 100 emails and customers lining up.

http://kstp.com/news/stories/s2247463.shtml?cat=1

Phil already posted another note about the Ohio bolide.  Is anyone
serious working on it?

Best luck in the field
Doug

PS, NASA's Men in Black led by Bill Cooke in Huntsville Alabama (NASA's
Meteoroid Environments Office) are the ones getting the press to be
contacted in case of finds of fragments:
http://www.nasa.gov/offices/meo/home/index.html
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Re: [meteorite-list] Asteroid 2011MD Bye-bye

[John Hendry]

The inside flap of John Player's cigarettes from the 60's used to say
It's the tobacco that counts. Albert needs to add that not everything
that can't count doesn't.

John



On 28/06/2011 20:45, Walter Branch waltbra...@bellsouth.net wrote:

Science humor...

I love it.

-Walter Branch

Not everything that can be counted, counts and not everything that counts
can be counted.  -A. Einstein.

On Jun 27, 2011, at 9:37 PM, Sterling K. Webb
sterling_k_w...@sbcglobal.net wrote:

 Video of 2011MD against background stars:
 http://www.youtube.com/watch?v=OUjbA21jjsc
 
 The pass was at 7600 miles (instead of the
 predicted 7500 miles) and it was 3.5 hours
 late from the predicted time.
 
 Mr. Newton could not be reached for comment.
 
 
 Sterling K. Webb
 
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Re: [meteorite-list] 2011 MD Animation

[John Hendry]

I'm counting what appear to be 17 fainter companion objects in parallel
trajectories. Is that what I'm looking at or is it some sort of video
artefact? If they are companions can their size be determined
approximately from the relative brightness or by some other means?
Thanks,
John


On 28/06/2011 01:24, Richard Kowalski damoc...@yahoo.com wrote:

I got a few positional images of this object with our 1.5-m (60) on Mt.
Lemmon last night, but Jure Skvarč at the Črni Vrh Observatory in
Slovenia obtained one of the nicer time lapse animations of the asteroids
motion against the background stars.


He writes on his Youtube page:

The images for this animation were taken using a 60-cm telescope from
the Črni Vrh Observatory on the night of 26 July 2011.  Each exposure
was of 15 seconds.  The telescope was tracking on the asteroid, changing
the rate of tracking between exposures.  The entire sequence lasted
about 4h40m, during which 635 exposures were made.  At the time the
asteroid was less than 20 km from Earth.  At the closest approach
some 15 hours later the distance was about 2 km.

4 hours, 40 minutes of imaging the NEO until his dawn, compressed down to
43 seconds. Enjoy


http://www.youtube.com/watch?v=p-pv18xDWCY
 

--
Richard Kowalski
Full Moon Photography
IMCA #1081
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Re: [meteorite-list] 2011 MD Animation

[John Hendry]

Thanks Richard I get it. I think my Nikon DSLR can be set to perform a
similar technique for noise reduction using a dark frame subtraction with
the dark frame getting an equal exposure time as the image to be
processed.

John

On 28/06/2011 12:43, Richard Kowalski damoc...@yahoo.com wrote:

Hi John.

What you are seeing are not companions but instead are imaging
artifacts called hot pixels. They are pixels that have a non linear
response and are normal. Astronomical imagers usually use a technique
called Dark Frame Subtraction to remove these hot pixels from the
image. I imagine Yure had some reason why he didn't apply the dark.

 Another technique to reduce hot pixels is to lower the temperature of
the imaging chip that as the response of these pixels becomes more linear
again as the chip gets colder. Many use a combination of both cooling and
dark frames. Professional observatories cool our cameras so cold that we
don't have these hot pixels and don't need to this step during image
processing.

Hope this helps.

 
--
Richard Kowalski
Full Moon Photography
IMCA #1081


- Original Message -
From: John Hendry p...@pict.co.uk
To: Richard Kowalski damoc...@yahoo.com; meteorite list
meteorite-list@meteoritecentral.com
Cc: 
Sent: Tuesday, June 28, 2011 8:04 AM
Subject: Re: [meteorite-list] 2011 MD Animation

I'm counting what appear to be 17 fainter companion objects in parallel
trajectories. Is that what I'm looking at or is it some sort of video
artefact? If they are companions can their size be determined
approximately from the relative brightness or by some other means?
Thanks,
John


On 28/06/2011 01:24, Richard Kowalski damoc...@yahoo.com wrote:

I got a few positional images of this object with our 1.5-m (60) on Mt.
Lemmon last night, but Jure Skvarč at the Črni Vrh Observatory in
Slovenia obtained one of the nicer time lapse animations of the asteroids
motion against the background stars.


He writes on his Youtube page:

The images for this animation were taken using a 60-cm telescope from
the Črni Vrh Observatory on the night of 26 July 2011.  Each exposure
was of 15 seconds.  The telescope was tracking on the asteroid, changing
the rate of tracking between exposures.  The entire sequence lasted
about 4h40m, during which 635 exposures were made.  At the time the
asteroid was less than 20 km from Earth.  At the closest approach
some 15 hours later the distance was about 2 km.

4 hours, 40 minutes of imaging the NEO until his dawn, compressed down to
43 seconds. Enjoy


http://www.youtube.com/watch?v=p-pv18xDWCY
 

--
Richard Kowalski
Full Moon Photography
IMCA #1081
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Re: [meteorite-list] Building Inspired by Meteorites

[John Hendry]

The light capturing alignment of buildings is even older than that.
Newgrange springs to mind as an obvious neolithic example (winter solstice)
http://www.ancient-wisdom.co.uk/irelandnewgrange.htm

There's also the star shafts in the great pyramid, and the stair serpent
at Chichen Itza (spring equinox). There's a lot more besides.

John



On 21/06/2011 12:52, Matthias Bärmann majbaerm...@web.de wrote:


That's pretty cool indeed, Jan. Is the Campo already there? I couldn't
find 
it on the photos.

Btw. such kind of light performance was well known to the anonymous
architects of the medieval cathedrals:

One of the oldest Gothic cathedrals in France is Chartres cathedral.
This 
cathedral is aligned to the summer solstice. On the summer solstice the
Sun 
shines through the window of ŒSaint Apollinaire¹ with a depiction of the
Roman sun god Apollo and its rays fall straight on an iron nail in the
floor 
of the cathedral.
(see 
http://www.soulsofdistortion.nl/The%20mystery%20of%20the%20Cathedrals.html
 , 
with photo)

Best,
Matthias


- Original Message -
From: Jan Bartels meteori...@online.nl
To: Pete Pete rsvp...@hotmail.com; meteoritelist meteoritelist
meteorite-list@meteoritecentral.com
Sent: Tuesday, June 21, 2011 7:22 PM
Subject: Re: [meteorite-list] Building Inspired by Meteorites



Cool isn't it?
I was asked by the owner if I could get them a 100 kilo Campo.
This one is placed in a position in the building where the sun will shine
through a tube like construction on the meteorite exactly on the moment
the
astronomical summer begins. How cool is that?

Best,
Jan
IMCA #9833
Holland


- Original Message -
From: Pete Pete rsvp...@hotmail.com
To: meteoritelist meteoritelist meteorite-list@meteoritecentral.com
Sent: Tuesday, June 21, 2011 7:14 PM
Subject: [meteorite-list] Building Inspired by Meteorites




http://www.dezeen.com/2011/06/21/decos-technology-group-headquarters-by-in
bo-architects/

http://www.dezeen.com/2011/06/21/decos-technology-group-headquarters-by-in
bo-architects/



Dutch Building Looks Like It Landed on the Surface of Mars


Sam Biddle‹Architecture firms tend to use their offices as a giant
business
card they can work inside. Decos' is no exception‹except it looks like an
astronaut base, not a Dutch headquarters. Their inspiration? A meteorite
impact. Snip
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__ Hinweis von ESET Smart Security, Signaturdatenbank-Version
6226 
(20110621) __

E-Mail wurde geprüft mit ESET Smart Security.

http://www.eset.com




__ Hinweis von ESET Smart Security, Signaturdatenbank-Version
6227 (20110621) __

E-Mail wurde geprüft mit ESET Smart Security.

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Re: [meteorite-list] New Colorado fall or faux?

[John Hendry]

Better images in this video clip. Looks like that smelting slag/cinders
you find near the Holbrook railroad tracks.

http://www.9news.com/rss/story.aspx?storyid=203183

The professor mentioned in the text would appear to work in an
Anthropology department.

http://www.unco.edu/anthropology/faculty_staff.html

Regards,
John



On 14/06/2011 09:23, m...@mhmeteorites.com m...@mhmeteorites.com
wrote:

I don't think so, and most university professors couldn't identify a
meteorite if it hit them on the head. Can't tell you how many times I
get 
calls saying but the geology professor says this is a meteorite. Looks
like this one is bogus too. But these local papers LOVE printing stories
like this.

Matt

--Original Message--
From: Rob Holcomb
Sender: meteorite-list-boun...@meteoritecentral.com
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] New Colorado fall or faux?
Sent: Jun 14, 2011 12:37 AM

Check out this article about a rock found in Greely Colorado. True? or
False?

http://www.greeleytribune.com/article/20110612/NEWS/706129976/1051Parent
P
rofile=1001

Doesn't look like any meteorite I've ever seen, seems more like a schist
or 
something with a high crystalline content.

Rob H 

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Matt Morgan
Mile High Meteorites
http://www.mhmeteorites.com
P.O. Box 151293
Lakewood, CO 80215

Kerf Industries LLC
Precision Wire Saw
http://www.kerfindustries.com
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Re: [meteorite-list] Metal? in a Hematite Nodule

[John Hendry]

Hematite/Haematite is not a metal. It's a metal oxide as you go on to say.
Any free iron included within a hematite mass would be native iron and not
hematite.

Regards,
John


On 14/06/2011 13:48, Bob Loeffler b...@peaktopeak.com wrote:

Hi Greg,

Hematite IS a metal, so that's what I would expect to see in a hematite
nodule.  Some will be completely oxidized (rusted) so that there is no
more
visible metal left in them, but others will still have some metal in them.
Hematite is Iron and Oxygen (Fe2O3), so that's why it's attracted to a
magnet.

Bob L



-Original Message-
From: meteorite-list-boun...@meteoritecentral.com
[mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Thunder
Stone
Sent: Tuesday, June 14, 2011 10:25 AM
To: meteorite-list@meteoritecentral.com
Subject: [meteorite-list] Metal? in a Hematite Nodule


List:

Has anyone cut a hematite nodule and found what looks like metal. Looks
the
same as the metal in meteorites.

Could it be Specular Hematite?

It is very magnetic (magnet attraction)

Much Thanks,

Greg S
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-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1382 / Virus Database: 1513/3703 - Release Date: 06/14/11

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Re: [meteorite-list] Impact Question

[John Hendry]

 calculator is confused, that's a kinetic
energy very close to 4,183,999,999,994,176 joules,
or one megaton, stored in a 10 kg slug, a mass which
if it were plutonium (and standing still) could only
produce an explosion of 0.2 megatons.

Potent stuff, kinetic energy.


Sterling K. Webb
--
--
- Original Message -
From: John Hendry p...@pict.co.uk
To: 'meteorite list' meteorite-list@meteoritecentral.com
Cc: Sterling K. Webb sterling_k_w...@sbcglobal.net
Sent: Monday, April 25, 2011 12:56 PM
Subject: Re: [meteorite-list] Impact Question


Sterling,

On 24/04/2011 23:28, Sterling K. Webb sterling_k_w...@sbcglobal.net
wrote:

snip

It takes a little over a joule to melt a gram of rock; that's
the kinetic energy of that gram traveling at the sedate
velocity of a mere 2100 m/s. A good-sized, high-speed
impactor would turn to plasma with close to 100%
efficiency.

snip

I followed all but the aboveS

Assuming physical properties for say pure ironS

Specific Heat Capacity for iron = 460 J/kg/degK
(http://www.engineeringtoolbox.com/specific-heat-metals-d_152.html)
Melting point of iron = 1530 deg Celcius = 1803 Kelvin
(http://www.muggyweld.com/melting.html)
Assuming incoming temperature of impactor is 200 Kelvin
(http://en.wikipedia.org/wiki/Asteroid_belt)

Then to raise the 1 gram impactor to its melting point requires a
temperature increase of 1603 K and the energy required to do this should
be roughly this
1603 x 0.001 x 460 = 737 Joules.

So a typical value would be more like one *Kilojoule* to melt a gram of
meteorite if I have my sums right (stone would be higher, maybe around
twice as much as iron)

Considered as kinetic energy, 1000 Joules would represent a velocity of
sqrt[1000/(0.5*0.001)] = 1414 m/s which is ballpark consistent with your
velocity estimate, but the energy you quote is a tad on the light side
is
it not?

Regards,
John



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Re: [meteorite-list] Impact Question

[John Hendry]

Sterling,

On 24/04/2011 23:28, Sterling K. Webb sterling_k_w...@sbcglobal.net
wrote:

snip

It takes a little over a joule to melt a gram of rock; that's
the kinetic energy of that gram traveling at the sedate
velocity of a mere 2100 m/s. A good-sized, high-speed
impactor would turn to plasma with close to 100%
efficiency.

snip

I followed all but the aboveŠ

Assuming physical properties for say pure ironŠ

Specific Heat Capacity for iron = 460 J/kg/degK
(http://www.engineeringtoolbox.com/specific-heat-metals-d_152.html)
Melting point of iron = 1530 deg Celcius = 1803 Kelvin
(http://www.muggyweld.com/melting.html)
Assuming incoming temperature of impactor is 200 Kelvin
(http://en.wikipedia.org/wiki/Asteroid_belt)

Then to raise the 1 gram impactor to its melting point requires a
temperature increase of 1603 K and the energy required to do this should
be roughly thisŠ
1603 x 0.001 x 460 = 737 Joules.

So a typical value would be more like one *Kilojoule* to melt a gram of
meteorite if I have my sums right (stone would be higher, maybe around
twice as much as iron)

Considered as kinetic energy, 1000 Joules would represent a velocity of
sqrt[1000/(0.5*0.001)] = 1414 m/s which is ballpark consistent with your
velocity estimate, but the energy you quote is a tad on the light side is
it not?

Regards,
John



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Re: [meteorite-list] Impact Question

[John Hendry]

In fairness to Sterling I think he did give a simple answer, and I think
you raise a few interesting notions.

I wouldn't get too upset at the nitpicking, it is the mechanism by which
we get closer to the truth, but I can understand how you feel aggrieved by
being pounced on for your simple explanation. Not everyone is cut out for
the diplomatic corps.

I currently believe in the Law of Conservation of Energy. i.e. Energy
cannot be created or destroyed, only converted in form, whether that be
the classical manifestations or to and from matter. So I believe there is
a perfect conversion of the impactor's kinetic energy. A plasma ball is
one obvious manifestation but this patently isn't a perfectly inelastic
collisionŠ All of the kinetic energy is not destroyed. A lot of it will
get transferred to the target body as the crater is excavated and seismic
waves are induced as the earth wobbles. This transferred kinetic energy
will largely be converted to heat quite quickly as the debris lands and
the seismic waves die down, but I bet some remains as the Earth's motion
in space is permanently changed. A small change in velocity but a huge
mass.

So what I find interesting is what the breakdown of energy transfer would
actually be. Patently there is a lot instantly transferred to heat at the
point of contact between impactor and impactee, but how much I wonder is
transferred to non-thermal momentum of and within the impactor, and how
much of that momentum ultimately remains in a different earth motion after
the wobbles die down as they convert to heat?

In addition I should imagine the pressures and temperatures created by
something Chixalub scaled are enormous. Is there any possibility that
matter might be created or destroyed by induced thermonuclear reactions
under such extreme pressure and temperature?

I think your right to nitpick. It should have been called the hydrogen
fusion derived neutron accelerated conventional vanilla flavoured fission
bomb.

Regards,
John




On 25/04/2011 01:44, Barrett barret...@comcast.net wrote:

Dear Mr. Sterling K. Webb,
Simple questions usually dictate a simple answer, which is what I gave,
and
is essentially correct.
Unlike you, I wasn't nit-picking.
If you want to nit-pick, I can do that also.
There is no such thing as a perfect conversion when it comes to
energy/matter conversion, not even with the so-called BIG BANG.
To nit-pick, your statement:
 Plasma ball, a certain temperature, a certain energy -- that's the whole
story, because that's all there is left.
Is incorrect as it assumes a perfect conversion.
This simply isn't true in the context of the question he asked. Simple
evidence that your statement isn't so is the worldwide iridium deposition
at
the K/T Boundary is directly attributed to the event cited in the original
question- Chixalub impact
Our (mankinds) best attempt at nuclear conversion is only a few percent of
the available fusionable material. Which this is a good thing or the
somewhat wrongful name for the HYDROGEN BOMB would have eliminated all
life
on earth when first tested, as was feared by many. (which would have made
the original question, my answer and your uncalled-for drival a moot point
as we wouldn't be here for it)

Your over-reactive reply to my answer is why many people on lists don't
get
involved in answering questions.
For the most part your reply was technically sound and eloquent, but the
attitude   Let's get our physics straight. I feel was uncalled for,
offensive and downright nitpicking.
For his original question, bringing (Entropy? Don't ask! is totally
uncalled for, demeaning and poor usage of () marks as you left the
closing )
off. NITPICKING huh?
ENTROPY as part of your answer IS incorrect as he asked a SIMPLE question,
not a technical one. I could keep going, but
'Nuff said
-Barrett



-Original Message-
From: Sterling K. Webb [mailto:sterling_k_w...@sbcglobal.net]
Sent: Monday, April 25, 2011 12:28 AM
To: Barrett; 'Stuart McDaniel'; 'meteorite list'
Subject: Re: [meteorite-list] Impact Question

Stuart, Barrett, List,

Let's get our physics straight.

The mechanisms being talked about here:
burning from entry and inertia... travel[ing]
into the earth are missing the point. These are
not causes, but rather effects.

All isolated, disconnected bodies have a certain
amount of energy in them. A small asteroid traveling
through space has energy that can be described
in many way depending on what other body you
reference it to.

All bodies in free motion in a field, like a gravitational
field, have a potential energy determined by their
position and their motion. Imagine you are standing
in your backyard with a nice chunk of rock in your
hand.

Motionless in your hand, held up by a force from your
muscles equal to the Earth's gravitational pull, it has
no kinetic energy at all, because it isn't moving. But it
does have potential energy. It you were to release it,
that rock would move under the invisible influence
of 

Re: [meteorite-list] Not to worry. Nukes are good.

[John Hendry]

Count,

I'm sure it would help the peace of mind of the great unwashed and
medieval thinking people like myself if the liberal and antiliberal press
alike would do their job, ask the right questions to the right people, and
explain a few basic facts. I am presuming the reactor's pneumatically or
hydraulically operated control rods were deployed to stop fission in the
immediate aftermath of the quake. I have seen no news report confirming
this or even mentioning it. I am also presuming the attempts to maintain
cooling are to remove residual heat from the fuel. I have seen no news
report confirming this or even mentioning it. I am presuming the large
explosion I just watched on Fox at Fukushima No.1 was the water coolant
system giving way due to excessive pressure, which has me now speculating
that they lost relief valve control (flat battery?). These pictures are
running in conjunction with the commentary reporting that Japan's Nuclear
Safety Commission are saying that it may be experiencing a meltdown. So
all my peasant level analysis leads me to speculate that that the core is
hot, intact, with no fission reaction and is cooling slowly. Meanwhile the
redundancy in the cooling system has appeared to have failed to save its
plumbing from getting blown to bits by residual reactor heat. This appears
at odds to what their safety commission is telling the world so I have to
suspect my pathetic attempts to understand the events are in error.

I just feel so very sad for the people in Japan. I cannot possibly fathom
from the information given by press and government institutions alike what
the true story is. And I would resist the notion, perhaps naively, that it
is due to apathy regarding trying to understand the science. I personally
think and hope that things will be just fine regarding any fuel
contamination (only low level from coolant dispersal - assuming no fuel
contamination) but I am not reassured by any listening, thinking, or
reading I have done. What do I know?... anything can go pear shaped. I've
worked in the Ukraine, I've seen first hand the melted carcass of Piper
Alpha. I agree with much of what you allude to My Lord, but I am not
enamoured of the tone in parts. The best laid plans of mice and men gang
aft aglae, and leave us nought but grief and pain for promised joy. Bad
things happen and dismissiveness of slim probabilities breeds complacency
and trivialises disaster when it inevitably comes. The handling and
containment of nuclear materials is serious stuff and warrants due respect
and consideration to the risk and reward of such endeavour, as does all
our other major sources of energy production. People shouldn't have to
break mental sweat to do research. They pay good money to government and
media organisations from the labours of their own expertise, and deserve
to be informed in accurate, unbiased and understandable terms. I don't
think the notion that this doesn't happen very well should lead to the
assumption that the lay electorate are peasants ill deserving of a hand on
their own destiny.

Regards,
John 


On 11/03/2011 21:48, Count Deiro countde...@earthlink.net wrote:

Not to worry Mike, Dirk and Listers,

The GE designed reactors (1960) at Fukushima/Daiichi have triple on site
redundancy in cooling and containment and the possibility of an
uncontrolled environmentally harmful release of radioactive (in this case
steam) is negligible.

It's all in the numbers. When the media reports that core pressures are
such and such above normal and that the radioactivity that might be
released is  thousand of times above normal, they fail to tell you that
normal is such a low level of emission as to mean nothing to humans, or
the environment. 

This same kind of irresponsible reporting created the infamous, an
unnecessary, panic at Three Mile Island where the total tritium release
equated to a couple of X-rays, or a trip across the USA on an airliner.

My point is, that If you demonstrated to the typical uneducated man in
the street that a bit of Trinitite was giving off 1000 times the
background (normal) radiation level, he'd panic. I've proved this by
putting a contamination meter on Trinitite samples with the sensitivity
set to high and watching my victim's reaction as it loudly goes off scale.

When I served on Nevada's Nuclear Waste Study Committee and was the
entertainment on the Chamber of Commerce and Lion's Club rubber chicken
circuit, I used to place a common household smoke detector (They contain
an Americium emitter) under some hapless audience member's chair and
then, much to his discomfort, using a meter to locate him.

The great unwashed have more fears than medieval peasants, yet they
refuse to expend the mental sweat to learn the science. Ask them to
listen to more than two sentences describing fission and their eyes glaze
over. Yet their votes decide the future of energy production, or better
said..the lack of itin my country.

Regards and stay calm.

Count Deiro
IMCA 

[meteorite-list] FW: Not to worry. Nukes are good.

[John Hendry]

Dirk sent me this just after I went to bed. Not sure if he can reach the
listserver anymore at the moment. Forwarding as requested.
Regards,
John


On 12/03/2011 04:45, drtanuki drtan...@yahoo.com wrote:

John,  My post did not post to the list please post for me:

Dear List,

Core is exposed and radiation is now leaking directly into the
environment.

http://lunarmeteoritehunters.blogspot.com/2011/03/reactor-is-gone-20-kilom
eter-evacuation.html

Dirk Ross...Tokyo

The reactor is GONE!




--- On Sat, 3/12/11, John Hendry p...@pict.co.uk wrote:

 From: John Hendry p...@pict.co.uk
 Subject: Re: [meteorite-list] Not to worry. Nukes are good.
 To: Meteorite List meteorite-list@meteoritecentral.com
 Date: Saturday, March 12, 2011, 8:39 PM
 Count,
 
 I'm sure it would help the peace of mind of the great
snip


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Re: [meteorite-list] Extra-terrestrial Fossil found in meteorite?

[John Hendry]

The picture is a bit misleadingŠ I initially thought that was a
photomicrograph from the meteorite, but it's actually a terrestrial
Titanospirillum velox with the image lifted from this paperŠ
http://bioinformatica.uab.es/biocomputacio/treballs02-03/S_Serrano/articulo
%20espiroqueta.htm
John



On 05/03/2011 09:26, E.P. Grondine epgrond...@yahoo.com wrote:

Hi all - 

This just in:

http://www.foxnews.com/scitech/2011/03/05/exclusive-nasa-scientists-claims
-evidence-alien-life-meteorite/

Cl1's anyone?

This one has me baffled. My guess would be ejecta from an Earth or Mars
impact, but... No, that doesn't work.

E.P.


  
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[meteorite-list] What's Hitting Earth?

[John Hendry]

Are there papers supporting the 100 tons per day figure hitting the
atmosphere? Of that mass what proportion hits the surface? How are these
figures arrived at?
Can anyone point me to relevant references please?
Thx,
John



On 01/03/2011 19:40, meteoritefin...@yahoo.com
meteoritefin...@yahoo.com wrote:

Yeah, Ron, like you, I thought this was newsworthy and I posted this to
the List about  20 hrs ago. But no discussion here at all since then.
Strange.
Robert Woolard

Sent from my iPhone

On Mar 1, 2011, at 7:21 PM, Ron Baalke baa...@zagami.jpl.nasa.gov
wrote:

 
 
http://science.nasa.gov/science-news/science-at-nasa/2011/01mar_meteorne
t
work/
 
 What's Hitting Earth?
 NASA Science News
 
 March 1, 2011: Every day about 100 tons of meteoroids -- fragments of
 dust and gravel and sometimes even big rocks - enter the Earth's
 atmosphere. Stand out under the stars for more than a half an hour on a
 clear night and you'll likely see a few of the meteors produced by the
 onslaught. But where does all this stuff come from? Surprisingly, the
 answer is not well known.
 
 Now NASA is deploying a network of smart cameras across the United
 States to answer the question, 'What's Hitting Earth?'
 
 Did that meteor you saw blazing through the sky last night come from
the
 asteroid belt? Was it created in a comet's death throes? Or was it a
 piece of space junk meeting a fiery demise?
 
 When I get to work each morning and power up my computer, there's an
 email waiting with answers, says William Cooke, head of NASA's
 Meteoroid Environment Office. And I don't have to lift a finger,
except
 to click my mouse button.
 
 Groups of smart cameras in the new meteor network triangulate the
 fireballs' paths, and special software^1 uses the data to compute their
 orbits and email Cooke his morning message.
 
 If someone calls me and asks 'What was that?' I'll be able to tell
 them. We'll have a record of every big meteoroid that enters the
 atmosphere over the certain parts of the U.S. Nothing will burn up in
 those skies without me knowing about it!
 
 In other U.S. meteor networks, someone has to manually look at all the
 cameras' data and calculate the orbits - a painstaking process.
 
 With our network, our computers do it for us - and fast, says Cooke.
 
 The network's first three cameras, each about the size of a gumball
 machine, are already up and running. Cooke's team will soon have 15
 cameras deployed east of the Mississippi River, with plans to expand
 nationwide^2 . Cooke is actively seeking schools, science centers, and
 planetaria willing to host his cameras. Criteria are listed in the
notes
 at the end of this story.
 
 In addition to tracking fireballs and their orbits, Cooke's system
gives
 him other valuable information.
 
 It provides data on meteor speed as a function of size - and this is
 critical to calibrating the models we use in designing spacecraft.
 
 Meteorite hunters will reap benefits too. By determining a bright
 fireball's trajectory through the atmosphere, the network's software
can
 calculate whether it will plunge to Earth and pinpoint the impact
 location fairly precisely.
 
 And when we collect the meteorite chunks, we'll know their source. I
 could be holding a piece of Vesta in my hand.^3 It would be like a free
 sample return mission!
 
 Opportunities like that, however, will be rare. Most meteorites fall
in
 the ocean, lakes, forests, farmer's fields, or the Antarctic, says
 Rhiannon Blaauw, who assists Cooke. And the majority of those
 meteorites will never be found. But our system will help us track down
 more of them.
 
 All cameras in the network send their fireball information to Cooke and
 to a public website, fireballs.ndc.nasa.gov. Teachers can contact Cooke
 at william.j.co...@nasa.gov to request teacher workshop slides
 containing suggestions for classroom use of the data. Students can
learn
 to plot fireball orbits and speeds, where the objects hit the ground,
 how high in the atmosphere the fireballs burn up, etc.
 
 Cooke gives this advice to students and others who want to try meteor
 watching on their own:
 
 Go out on a clear night, lie flat on your back, and look straight up.
 It will take 30 to 40 minutes for your eyes to become light adapted, so
 be patient. By looking straight up, you may catch meteor streaks with
 your peripheral vision too. You don't need any special equipment --
just
 your eyes.
 
 One more thing -- don't forget to check the website
 http://fireballs.ndc.nasa.gov/ to find out what you saw!
 
 
 Author: Dauna Coulter
 Editor: Dr. Tony Phillips
 Credit: Science@NASA
 
 *More Information*
 
 (1) The smart meteor network uses ASGARD (All Sky and Guided Automatic
 Realtime Detection) software, developed at the University of Western
 Ontario with both NASA and Canadian funding, to process the information
 and perform the triangulation needed to determine the orbits and
origins
 of the fireballs. The Southern Ontario Meteor Network, or SOMN,

Re: [meteorite-list] Meteorite Dealers the book? Coming soon to the big screen?

[John Hendry]

See Page 42 here (the TOC is wrong)...

http://www.docstoc.com/docs/19561817/Meteorite-Dealers

Gotta get me one of those fig leaf bandanas.

John




On 20/01/2011 12:29, Notkin geok...@notkin.net wrote:

 
http://cgi.ebay.com/Meteorite-Dealers-/220724750545?pt=LH_DefaultDomain_0
hash=item33643868d1

Really? A book of poetry?

Is it just me, or do the terms meteorite dealer and poetry not
really seem to go together that well?


: )


Geoff N.

www.aerolite.org
www.meteoritemen.com
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Re: [meteorite-list] Double Geminid Photo

[John Hendry]

It says its a composite image from 850 frames over the 13th/14th with 30
sec shutter for each. Using intervalometer running all night I presume. I
was wondering initially as they seem to be coming from multiple directions.

John

 
On 17/12/2010 09:40, Mike Hankey mike.han...@gmail.com wrote:

wow thats an octa-geminid.

how long was his shutter open to catch all that? doesn't look like
very long, considering the lack of star trails and ground movement in
the trees.

I looked at some of Jimmy's pictures in his flicker account. really
great astro photos. his solar photos are especially amazing.

On Thu, Dec 16, 2010 at 10:34 PM, Michael Johnson
mich...@rocksfromspace.org wrote:
 My neighbor Jimmy Eubanks made this great shot a few nights ago:
 http://www.flickr.com/photos/astroimaging/5263191360/

 Regards,
 Michael Johnson
 http://www.rocksfromspace.org

 - Original Message -
 From: Rob Holcomb rob.holc...@gmail.com
 To: Global Meteor Observing Forum meteor...@meteorobs.org,
meteoritelist meteorite-list@meteoritecentral.com
 Sent: Thu, 16 Dec 2010 19:02:31 -0800 (PST)
 Subject: Re: [meteorite-list] Double Geminid Photo

 Thanks for sharing! I love night photography and to catch multiple
meteors
 is tough to do.
 Rob Holcomb
 http://www.rholcomb.com

 --
 From: Mike Hankey mike.han...@gmail.com
 Sent: Thursday, December 16, 2010 3:24 PM
 To: Global Meteor Observing Forum meteor...@meteorobs.org;
 meteoritelist meteorite-list@meteoritecentral.com
 Subject: [meteorite-list] Double Geminid Photo

 Over 2 nights of cold and mostly cloudy weather I was able to capture
 21 meteor photos. I was really impressed with how active this shower
 was especially the peak night.

 One of these exposures caught two meteors within the same shot (a 25
 second time frame)

 
http://www.mikesastrophotos.com/wp-content/uploads/2010/12/double-gemini
d.jpg

 Photo Details: Canon 40d camera with Canon EF 15mm f/2.8 fish eye
 lens; 25 second ISO 800 exposure

 Pretty cool! I think they are brothers.

 Mike Hankey
 Freeland MD
 http://mikesastrophotos.com
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Re: [meteorite-list] Geminid pic / photographing meteors

[John Hendry]

Chris,

To be clear about how I personally was looking at this; the length of time
the shutter is open has no bearing on the sensitivity to the meteor
exposure. That I thought was entirely controlled by aperture and ISO
sensitivity (i.e. film speed), along with the velocity, brightness and
trail persistence of the meteor. Camera field of view might also have a
bearing as the meteor image will spend a longer time over a particular
pixel sensor with a shorter focal length (i.e. wider field of view) and
thus be brighter in the image (though smaller). When you say the longer
your exposure, the less sensitive you will be to meteors then I can see
this from the point of view that the meteor exposure can be progressively
obscured by scattered light in the sky (from the
sun/moon/streetlights/background starlight) and from sensor noise in the
case of digital cameras. With sensor noise cancellation and a pitch black
sky, I would expect exactly the same meteor image from a 5 second exposure
versus a 30 minute exposure at the same f-stop and ISO, though the lower
magnitude stars (specifically those that haven't fully reached the cameras
upper exposure limit with the shorter shutter) will appear brighter as the
shutter is kept open longer. Is this about right or am I missing
something? I'm just not clear why I would lose fainter events with longer
shutter speeds other than for the reasons I outlined above.

I like your video idea... you could edit out all the dead action and make
something that looked like a much more exciting bombardment... though
jumping stars would probably give the game away unless you're using a
tracking mount. Plenty of scope for fun. Love your telescope images. M51
is just fantastic.

Cheers,
John





On 15/12/2010 11:34, Chris Peterson c...@alumni.caltech.edu wrote:

Keep in mind that the longer your exposure, the less sensitive you will
be 
to meteors. For maximum sensitivity to meteors, you'd like your exposure
time to be no longer than a typical meteor lasts- say a couple of
seconds. 
Anything more and you'll start losing fainter events. But with most
cameras, 
if your exposure gets too short you spend more time between exposures
than 
you do imaging the sky, and you start missing meteors or catching partial
trails. 30 seconds is probably a good compromise.

Using video is another solution. It maximizes sensitivity, but at the
expense of total pixel count.

Chris

*
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com


- Original Message -
From: John Hendry p...@pict.co.uk
To: Meteorite-list@meteoritecentral.com
Sent: Wednesday, December 15, 2010 11:20 AM
Subject: Re: [meteorite-list] Off topic- the weather IS getting worse +
On 
topic Geminid pic


 Thank you Carl. I did set out to capture half a dozen emanating from the
 radiant with something earthbound in the foreground, but just too much
 light pollution to hold the shutter open more than a couple of minutes
 even looking completely at the sky. I think I'd cut it back to 30 secs
or
 so during the successful frame to avoid blowing the glow on the clouds
too
 much. I'll try again at the next promising opportunity, and make plans
for
 a more rural location. I think you either have to shoot for a shortish
 shutter exposure/wide angle to minimise star trailing or use a long
 shutter speed to emphasise the trails. To my eye, very short star trails
 make it look like you've got a dodgy tripod. I may keep my eye open for
a
 used Meade and adapt the equatorial mount, but that approach would
cause a
 smeared foreground if there were terrestrial objects in frame, though I
 could get round that with multiple exposures.

 Regards,
 John

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Re: [meteorite-list] Off topic- the weather IS getting worse + On topic Geminid pic

[John Hendry]

Thank you Carl. I did set out to capture half a dozen emanating from the
radiant with something earthbound in the foreground, but just too much
light pollution to hold the shutter open more than a couple of minutes
even looking completely at the sky. I think I'd cut it back to 30 secs or
so during the successful frame to avoid blowing the glow on the clouds too
much. I'll try again at the next promising opportunity, and make plans for
a more rural location. I think you either have to shoot for a shortish
shutter exposure/wide angle to minimise star trailing or use a long
shutter speed to emphasise the trails. To my eye, very short star trails
make it look like you've got a dodgy tripod. I may keep my eye open for a
used Meade and adapt the equatorial mount, but that approach would cause a
smeared foreground if there were terrestrial objects in frame, though I
could get round that with multiple exposures.

Regards,
John

On 15/12/2010 09:40, cdtuc...@cox.net cdtuc...@cox.net wrote:

John,
Wow what a great shot.

--
Carl or Debbie Esparza
Meteoritemax
I suppose

 John Hendry p...@pict.co.uk wrote:
 Carl,
 
 Don't jinx this! We just got here from Manitoba on Friday and are
 thoroughly enjoying the 100 degree leap in our ambient temperatures. It
is
 perfect.
 
 We're on a resort in Apache Junction and I took the mutts out to the
 dogpark around 9pm last night and set up the camera with a wide-angle
 trained to the east. Loosed off half a dozen 2 minute exposures and
never
 caught anything. I had long exposure noise reduction turned on so there
 was an equal amount of time between shots while the camera collected
noise
 data from the sensor to subtract from the frame information. Over about
30
 minutes I didn't see any meteors. However the place is lit with numerous
 sodium lamps and the scatter and flare in the sky was awfully strong.
 Would have thought to have caught something as cloud cover was whispy
and
 minimal and you could see the majority of the bright stars just fine.
 Called it a night, but got up at six and this time headed to the ball
 diamond away from the lights as best I could. Sky was still pretty clear
 with some patchy haze. Saw one bright one dropping vertically in the
east
 as I was setting up and got about 6 frames off before the dawn got the
 better of the heavens. Over about 30 minutes I saw about 5, most of them
 appearing roughly to the south. Only managed to get one in frame...
 
 http://pict.co.uk/geminid.jpg
 
 (typically all the rest decided to pop into view as the camera was doing
 its noise reduction thing).
 
 In comparison to some of the astrophotography out there, this is
 extraordinarily lame, but I'm quite please I got something at my first
 attempt.
 
 Image is looking roughly south with the camera axis elevated to about 75
 degrees from horizontal. Angle of view is around 100 degrees diagonally.
 
 Is the temporal distribution of these things completely random or do
they
 tend to arrive in 'clumps' or with relatively constant intervals between
 them? I don't think I was seeing enough to get a feel for this.
 
 Regards,
 John
 
 
 
 
 On 14/12/2010 19:22, cdtuc...@cox.net cdtuc...@cox.net wrote:
 
 ET, Mike, all,
 Thanks so much for the warning. It has been over 80 here in Tucson the
 past 4 days. Can't wait for some cooler weather.
 Sorry. I couldn't resist. But, it is supposed to get down to a chilling
 79 tomorrow. 
 Carl
 --
 Carl or Debbie Esparza
 Meteoritemax
 
 
 
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Re: [meteorite-list] Off topic- the weather IS getting worse + On topic Geminid pic

[John Hendry]

Carl,

Don't jinx this! We just got here from Manitoba on Friday and are
thoroughly enjoying the 100 degree leap in our ambient temperatures. It is
perfect.

We're on a resort in Apache Junction and I took the mutts out to the
dogpark around 9pm last night and set up the camera with a wide-angle
trained to the east. Loosed off half a dozen 2 minute exposures and never
caught anything. I had long exposure noise reduction turned on so there
was an equal amount of time between shots while the camera collected noise
data from the sensor to subtract from the frame information. Over about 30
minutes I didn't see any meteors. However the place is lit with numerous
sodium lamps and the scatter and flare in the sky was awfully strong.
Would have thought to have caught something as cloud cover was whispy and
minimal and you could see the majority of the bright stars just fine.
Called it a night, but got up at six and this time headed to the ball
diamond away from the lights as best I could. Sky was still pretty clear
with some patchy haze. Saw one bright one dropping vertically in the east
as I was setting up and got about 6 frames off before the dawn got the
better of the heavens. Over about 30 minutes I saw about 5, most of them
appearing roughly to the south. Only managed to get one in frame...

http://pict.co.uk/geminid.jpg

(typically all the rest decided to pop into view as the camera was doing
its noise reduction thing).

In comparison to some of the astrophotography out there, this is
extraordinarily lame, but I'm quite please I got something at my first
attempt.

Image is looking roughly south with the camera axis elevated to about 75
degrees from horizontal. Angle of view is around 100 degrees diagonally.

Is the temporal distribution of these things completely random or do they
tend to arrive in 'clumps' or with relatively constant intervals between
them? I don't think I was seeing enough to get a feel for this.

Regards,
John




On 14/12/2010 19:22, cdtuc...@cox.net cdtuc...@cox.net wrote:

ET, Mike, all,
Thanks so much for the warning. It has been over 80 here in Tucson the
past 4 days. Can't wait for some cooler weather.
Sorry. I couldn't resist. But, it is supposed to get down to a chilling
79 tomorrow. 
Carl
--
Carl or Debbie Esparza
Meteoritemax



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Re: [meteorite-list] Arizona strewnfields?

[John Hendry]

Pat,

I was also in AZ last winter but working on rotation in the Ukraine which
took me away when the Tucson gem show was on last year. My wife and I did
take a trip to the show in Quartsite where we met one of the Moroccan
dealers, who had a nice selection of rocks to look at. I am pretty sure I
should be able to make the Tucson show next year.

I also appreciate the heads up on desert safety. I emigrated from the
relatively benign land of Scotland ten years ago and took up residence in
British Columbia. I was of course completely used to being top of the food
chain, and finding fresh bear prints the size of dinner plates on a gold
panning exhibition had me retreating back to the car in short order. From
what I've seen of the south west deserts they also remain rather wild and
untamed places populated with things that can hurt you if you are not
careful. I got an amateur radio licence a few years ago so I can carry a
VHF handheld to bolster the emergency communication options, but arming
oneself with the knowledge to mitigate danger in the wilds in the first
place is good advice. Its a jungle out there.

I have seen all Ruben's excellent videos. He makes it look ridiculously
easy, and his enthusiasm is one of the main reasons I got interested and
wanted to have a shot at searching myself.

Best,
John

 





On 26/11/2010 01:49, Pat Brown scientificlifest...@hotmail.com wrote:


Hi John,

Hopefully you will get an email from Ruben Garcia (mrmeteor...@gmail.com)
who lives in Phoenix. If not, I would encourage you to contact him. He is
one of the most accomplished meteorite hunters on the list and I am sure
he would get you started with a list of likely spots near Phoenix and
some great tips on hunting the bigger strewnfields further North in
Arizona. 

The other thing that you will want to do is attend the Tucson show. The
last bit of January and the first part of February is the Tucson Gem
Show. A small part of the show is the fossil and mineral show, and a part
of that fossil and mineral show is the meteorite show. Even though it is
a small part of the overall Tucson show, it is still the biggest
meteorite show in the world. Almost all of the world's dealers will be
there and almost all of the meteorite hunters will be there. If the
weather is favorable there are people who get together for meteorite
hunts before, during and after the show.

Please seek out the information to travel safely in the desert. The
places to hunt are often in the middle of no where and do not always have
cell phone coverage. The 'dry' lakebeds and washes are often not dry.
When the lakebeds do get wet, even a 4WD Jeep may not be able to drive
out. 

Finding my first meteorite in the field was a milestone in my life. I
highly recommend the hunt for your first meteorite.

I hope to see you at the Tucson show as well.

Best Regards, 
   Pat Brown


 Date: Thu, 25 Nov 2010 16:00:20 -0600
 From: p...@pict.co.uk
 To: Meteorite-list@meteoritecentral.com
 Subject: [meteorite-list] Arizona strewnfields?

 Hi List,

 I will be staying for a few months near Phoenix (Apache Junction) from
 December, and I am really interested in trying to find my first
meteorite.
 I'll have a BMW R1100GS and Jeep Liberty available for transport, and a
 degree in geology and a Gold Bug 2 to aid detection, but I am sort of
 stumped as to where to go and look. As far as I can tell the strewn
fields
 I know about (Franconia, Gold Basin, Holbrook) are all in high desert
and
 probably under white stuff. Can anyone suggest any locations within
reach
 where snow won't be an issue and a novice might have a reasonable chance
 of success? I was also wondering whether there are any meteorite
 collections in the area that I could visit? Thanks in advance for any
 advice.

 Kind regards,
 John


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[meteorite-list] Arizona strewnfields?

[John Hendry]

Hi List,

I will be staying for a few months near Phoenix (Apache Junction) from
December, and I am really interested in trying to find my first meteorite.
I'll have a BMW R1100GS and Jeep Liberty available for transport, and a
degree in geology and a Gold Bug 2 to aid detection, but I am sort of
stumped as to where to go and look. As far as I can tell the strewn fields
I know about (Franconia, Gold Basin, Holbrook) are all in high desert and
probably under white stuff. Can anyone suggest any locations within reach
where snow won't be an issue and a novice might have a reasonable chance
of success? I was also wondering whether there are any meteorite
collections in the area that I could visit? Thanks in advance for any
advice.

Kind regards,
John


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Re: [meteorite-list] Meteor Crater Impactor?

[John Hendry]

I think it looks elliptical in that Google picture because of the
perspective of the image.
To my eye when viewed from directly above it is more like a square with
rounded corners.

By the way does anyone know what that 100m diameter circular structure is,
located at 0.85 km to the SSW of the southern crater rim?

Looks manmade but what is it?

John


On 10/09/2010 12:59, Meteorites USA e...@meteoritesusa.com wrote:

Hi Sterling, Thanks for the answer, and links.

Still have a question though. I'm more curious about the angle of
descent. The paper mentions an angle of 45 degrees.

This seems like a very safe guess. Are there any data, or information
on the angle of descent other than in the paper you provided a link to.

See this crater photo from Google Earth:
http://www.mhcmagazine.com/images/crater.jpg

The crater is not perfectly round as would be expected from an impactor
coming in at a sharper angle.In fact the crater is more elliptical in
shape. It appears as if the impactor hit at an angle quite a bit
shallower than 45 degrees.

Is it possible the impactor came in at a shallower angle?

Regards,
Eric


On 9/10/2010 1:34 AM, Sterling K. Webb wrote:
 Eric, List,

 That is the conclusion of the 2005 paper in Nature by
 Melosh and Collins. Their computer models suggest it
 fragmented and came in as a swarm of pieces, much
 slowed by the atmosphere.

 Here's two popular articles:
 
http://news.nationalgeographic.com/news/2005/03/0310_050310_meteorcrater.
html 

 and
 http://www.astronomy.com/asy/default.aspx?c=aid=2965

 Here's original paper:
 
http://amcg.ese.ic.ac.uk/~gsc/publications/articles/download/article7.pdf

 Well, one page from Nature, Vol. 434, 10 March, 2005.



 Sterling K. Webb
 
-
 

 - Original Message - From: Meteorites USA
 e...@meteoritesusa.com
 To: Meteorite-list meteorite-list@meteoritecentral.com
 Sent: Thursday, September 09, 2010 10:44 AM
 Subject: [meteorite-list] Meteor Crater Impactor?


 Hi List,

 Can someone tell me the proposed/accepted angle of descent of the
 asteroid which formed Meteor Crater in AZ?

 Wikipedia has the impactor at 50 meters across, and velocity at 12.8
 km/s. Is this accurate?

 Eric
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Re: [meteorite-list] The Sniper Mentality

[John Hendry]

Richard,

I always use sniping services for bidding and my reasoning flawed or
otherwise is as follows. There exists a category of bidders that do not bid
their maximum and leave it at that, but like to continuously monitor the
auction for the duration and outbid others when they lose highest bid. This
sometimes reaches a frenzy of bid and counterbid in the last 30 minutes, and
this behaviour seems more related to beating the competition than an
incremental strategy that will cease as soon as they reach the maximum they
have in mind. Here is somebody admitting this...
http://ask.metafilter.com/47433/Psychology-of-Auctions

So I don't really want to add to the liquidity in any auction with bidders
like this that start out looking for a bargain and end up in a competitive
fiscal pissing match. If I have a bid in well before auction end at my limit
I risk provoking bidders like this to bid beyond what they originally had in
mind as eBay will continuously outbid them to my maximum. If I snipe an
auction with my maximum in the last 6 seconds I can rest assured that I
haven't provoked any people to bid beyond their maximum and perhaps beyond
mine.

Regards,
John

-Original Message-
From: meteorite-list-boun...@meteoritecentral.com
[mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Richard
Kowalski
Sent: March-17-10 4:58 PM
To: meteorite list
Subject: [meteorite-list] The Sniper Mentality

This mentality, waiting until the last few seconds before bidding, is
something I just don't get. Maybe someone can explain it to me.

I bid for lots on ebay just like I do when I bid at a real auction. I set in
my head what I believe the value of an item and what I have available in my
budget to bid for that item. I then bid that much and no more. If I get the
item, great. If not, someone wanted it more and we're willing to pay more
for the item...

While I will sometimes raise my ebay bid a little before the end of the
auction, I really don't understand the idea of sitting there and in the last
second or two, to try to jam in bids high enough to win the item.

Do snipers really want the item or are they just trying to screw others out
of the item? Are they just trying to get the item at a lower price, thinking
that their competitors will just rebid again, upping the price?

I see this on meteorite auctions every so often, but much more often on the
Daguerreotypes I bid on. The reason I was reminded of it was a lot I just
lost out on. There wasn't just one sniper, but two. The both bid at the
exact same time, 2 seconds before the auction ended...

As I said, it doesn't mater that I lost the lot. It went for more than I was
willing to pay, so I wouldn't have rebid even if I could.

Possibly someone can explain what is gained by bidding like this instead of
just bidding what you think it's worth and letting it go for that...

I'd really like to see ebay eliminate this foolery. It'd be pretty simple.
Any bids that occur within one minute of the closing time of the auction
automatically resets the end time by 10 minutes, or 30 minutes. The snipers
games are eliminated and the dealers (and ebay) gets more profits because
the auction remains open for the bidding to continue to higher levels. Just
like in a real live auction.

Thanks

--
Richard Kowalski
Full Moon Photography
IMCA #1081


  
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Re: [meteorite-list] Meteorites and Humidity: Some Questions

[John Hendry]

These may be daft ideas or already tried, but apart from dessicant removal
of moisture what about another line of attack...

(1) Removal of oxygen from the container... fill it with argon or nitrogen

(2) Scavenge oxygen from the container. The food industry deploys scavenger
sachets to remove oxygen from packaging and the most popular seem to be
sachets of iron filings. Probably these will oxidise quicker than the
meteorite given the larger surface area and absence of nickel.

http://www.nitro-pak.com/product_info.php?products_id=366

(3) UV activated scavenging polymers exist but these seem designed for final
depletion of an already low O2 atmosphere 2%. Might work in conjunction
with (1).

http://www.sealedair.com/products/food/os/oxygen_scavenging.html

(4) Use zinc as a sacrificial scavenger. Perhaps pack a perforated
non-conducting false bottom to the container with zinc wool thus isolating
it from contact with the specimen.

(5) Treat the specimen with vapour phase corrosion inhibiters. This will
form a molecular film on the specimen so I'm not sure of whether there would
be any alteration in the visual appearance of the specimen, or any other
undesirable side effects.

http://www.agmcontainer.com/vci/index.htm
http://www.agmcontainer.com/vci/vci_faqs.html

Regards,
John


-Original Message-
From: meteorite-list-boun...@meteoritecentral.com
[mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Marco
Langbroek
Sent: March-06-10 3:11 AM
To: meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] Meteorites and Humidity: Some Questions

 I store them primarily in Riker boxes and some in the jewel cases they 
 arrived in. I live in north central Florida and except for my air 
 conditioned home, I don't have the meteorites in any other climate 
 controlled container or cabinet. I'm noticing a few of the irons 
 (Miles especially) and one or two of the stony irons to appear a 
 little rustier than when they arrived.

I am actually not so fond of Riker mounts. Maybe it is our Dutch climate,
but I noted specimens start to rust on the contact face between the Riker
glass and the stone/iron: probably because moisture condenses there and/or
gets trapped. 
This was while there was dessicant in (some) of the mounts.

The problems vanished once I got myself a glass display cage. My meteorites
are much more stable now.

- Marco

-
Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
e-mail: sattrack...@wanadoo.nl

Cospar 4353 (Leiden):   52.15412 N, 4.49081 E (WGS84), +0 m ASL
Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL
SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html
Station (b)log: http://sattrackcam.blogspot.com
-
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Re: [meteorite-list] Fw: RFSPOD - February 9, 2010 Buzzard Coulee Blue Inclusion

[John Hendry]

Bornite?

-Original Message-
From: meteorite-list-boun...@meteoritecentral.com
[mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Gary
Fujihara
Sent: February-11-10 4:22 AM
To: Jeff Kuyken
Cc: Bernd Pauli; meteorite-list@meteoritecentral.com
Subject: Re: [meteorite-list] Fw: RFSPOD - February 9, 2010 Buzzard Coulee
Blue Inclusion

Aloha Jeff, Bernd, et al,

I am at a conference now and have limited access to email, but was informed
of this interesting anomalous inclusion in Jeff's Buzzard Coulee meteorite.
My friend and partner of the NWA (~L3, W0/1) has identified a similar
feature in one of my slices.  Please have a look at my 20.11g full slice to
see this blue feature in the middle of a troilite inclusion:

http://bigkahuna-meteorites.com/Images/614g/_20.11b.jpg

Because this is from the interior of the meteorite, it should dispel any
theory of fusion reaction during ablative flight.  

gary


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Re: [meteorite-list] Updated Lorton trajectory

[John Hendry]

I believe Google Earth likes (latitude,longitude). The data below has this
order transposed - try switching them around.

Regards,
John

Message: 12
Date: Wed, 27 Jan 2010 21:25:18 -0800 (PST)
From: Shawn Alan photoph...@yahoo.com
Subject: [meteorite-list]  Updated Lorton trajectory
To: meteorite-list@meteoritecentral.com
Message-ID: 188822.7120...@web113609.mail.gq1.yahoo.com
Content-Type: text/plain; charset=iso-8859-1

Rob and Listers,

When I put these coordinates in from the new estimated impact predictions
for the Lortan?meteorite?in google maps, the new impact sites are
in?Antarctica. Am I doing something wrong or is there a number off in the
coordinates that's giving me a wrong location?

Shawn Alan

Mass Longitude Latitude Distance Bearing 
- -   --- 
3 g -77.1383 38.7130 4.05 77.9 
10 g -77.1635 38.7104 2.68 75.5 
30 g -77.1804 38.7077 1.75 74.0 
100 g -77.1976 38.7043 0.80 71.8 
300 g -77.2116 38.7007 -0- N/A 
1 kg -77.2282 38.6965 0.94 252.1 
3 kg -77.2415 38.6923 1.72 250.2 
10 kg -77.2560 38.6874 2.57 249.0 




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Re: [meteorite-list] Angrite NWA 4931 Willamette cutting

[John Hendry]

Elton,

I subsequently found the missing bit here...
http://www.darrylpitt.com/willamette.html

The article states that there is evidence of sampling elsewhere, and that
science was again served when this meteorite was cut in 1997 and the end
piece in question was removed. So twelve years ago there was undoubtedly no
issues with core sampling technology not being available, so science would
appear to have been served in a clumsy fashion. Possibly something to do
with the trade value of an end piece versus a core?

Greg,

I like this, it looks much less intrusive..
Link to image of core sampling at MIT laboratory:
http://www.lunarrock.com/nwa4931/nwa4931core.jpg

Interesting paper you link to...
Link to LPSC abstract on magnetic field on Angrite Parent Body:
http://www.lpi.usra.edu/meetings/lpsc2008/pdf/2143.pdf

Especially interesting (re: D'Orbigny) is the differentiation of the random
field from the collector's magnet and the stable oriented field presumably
induced by the parent body. Now the stable oriented field is discounted as
having been acquired by slow thermal acquisition of the earth's field after
landing (VRM) or from recrystallisation from a weathering process. However
is there any possibility that an oriented meteorite might become magnetised
on entry - it gets hot (ok, probably not in the middle), keeps it's
orientation, and crosses the earth's albeit rather weak flux extremely
quickly?

Also I thought coercivity was the resistance to demagnetisation and was
related to the magnetic material. I therefore don't get how one can have one
magnetic material (the meteorite) carrying high and low coercivity fields
unless the fields are carried in different mineral components e.g. one in
pyrrhotite and one in magnetite (or throw native iron into the mix). Maybe
this is the point that the stable field is held equally through all magnetic
minerals but the one from the collector's magnet only really established
itself in the more easily magnetised (and demagnetised) component - whatever
that is (iron I guess).

Regards,
John



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[meteorite-list] Willamette cutting question

[John Hendry]

I just finished reading 'Rocks from Space' and there is mention that the
Willamette iron was gifted to the American Museum of Natural History by Mrs
William Dodge with the condition that it never be cut up. In the context of
this agreement how did it come about that a substantial 30lb end slice was
removed? Is there any published background on why this agreement was reneged
upon?

Personally I feel the removal has excessively damaged the overall aesthetic
of the meteorite - a bit like if an 1/8 of an inch was sliced off the end of
someone's nose. So my question is that if it is decided that a
morphologically spectacular meteorite needs to be sampled why cannot a core
be cut with the entry point on a relatively flat surface - perhaps the
bottom of a regmaglypt. After core extraction it would be relatively easy to
disguise the hole but keep the overall external appearance intact. 

John

 

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