the
video camera from Spike TV who had also come to the party.
Alan Rubin
- Original Message -
From: "Ruben Garcia"
To: "Meteorite List"
Sent: Tuesday, December 08, 2009 7:37 PM
Subject: [meteorite-list] Meteorite hits and Kills Man
It must be true Spike TV
I found that Dave McKay's recent quote that "we do believe that we are very,
very close to proving there is or has been life (on Mars)" is analogous to
that of Percival Lowell when he founded his observatory in Flagstaff,
Arizona in 1894. Lowell said that the purpose of the observatory was to
If we go back a bit (and as I pointed out in Disturbing the Solar System),
there is H. P. Lovecraft's 1927 horror story, The Colour out of Space,
wherein sinister space seeds within an iron meteorite poison the plants,
animals and people living on the farm where the meteorite fell.
___
Low-Ni or Ni-free iron doesn't occur just in some chondrules. It is also
found in impact-melt-rock clasts in ordinary chondrites and at the edges of
olivine grains in ureilites. These rocks have experienced localized in situ
reduction of FeO to metallic Fe as Jeff has pointed out. But let's l
- Original Message -
From:
To: "Alan Rubin" ; "meteoritelist"
Sent: Friday, March 26, 2010 12:23 PM
Subject: Re: [meteorite-list] Nickel free metal in Meteorites
Alan,
Wow, I appreciate that your points are put in terms I can follow but Would
you be so kind
and the asteroids would remain undifferentiated.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
405 Hilgard Avenue
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html
- Ori
respect to each other in the same way as the faces of a regular octahedron.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
websi
nucleate at a higher temperature will have a longer
period within which kamacite can grow.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website
crystallized) and
send some of the pieces on their way to the inner solar system. Nonmagmatic
irons (such as IAB) are more controversial. Some think that they also
formed in cores; others that they formed as metal melt pools at the bottoms
of impact craters on chondritic asteroids.
Alan Rubin
(TiS) would
not likely occur on the Earth.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html
overlying mantle) to the basaltic surface of another
asteroid.
Alan Rubin
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Sorry,, but I guess I was not clear. The only group of silicate-bearing
irons widely agreed to have come from an asteroid core is the IVA group.
This group has little silicate, mainly small grains of silica, which some
think may have been vapor deposited in the core. There are no collisions
i
ne of the advocates to explain it.
Alan
- Original Message -
From: "Mr EMan"
To: "Carl 's" ;
; "Alan Rubin"
Sent: Friday, September 04, 2009 6:36 AM
Subject: Re: [meteorite-list] Let's talk about meteorites
--- On Thu, 9/3/09, Alan Rubin wro
they share
some of these characteristics with their colleagues.
Alan Rubin
- Original Message -
From: "Meteorite-Recon.com"
To:
Sent: Wednesday, September 09, 2009 6:21 AM
Subject: Re: [meteorite-list] Chondritic parent bodies
Hi Jeff, others,
certainly true as far as th
t the model.
As is clear, the situation is not yet resolved.
Alan Rubin
- Original Message -
From: "Dave Gheesling"
To: "'Meteorite List'"
Sent: Tuesday, September 08, 2009 8:40 PM
Subject: [meteorite-list] Chondritic parent bodies
All,
Pete's q
Of course this abstract was superceded by the paper:
Dixon, Bogard, Garrison and Rubin (2004) 39Ar-40Ar evidence for early impact
events on the LL parent body. GCA 68, 3779-3790.
- Original Message -
From:
To:
Sent: Wednesday, September 09, 2009 9:47 AM
Subject: [meteorite-list] Cho
John Wasson and I classified some meteorites as L/LL because we were
uncertain of their proper classification. Typical for these meteories, some
properties indicate L, some indicate LL, and some could be truly
intermediate between the established ranges. This may mean that they are
anomalous
ng. We need to look beyond these processes and infer what the
chondrules were like prior to accretion when they were isolated dustballs in
the nebula. This is a difficult task, but, as Jeff Grossman said, progress
is being made.
Alan Rubin
- Original Message -
From: "Alexande
les indeed formed as isolated
droplets in the nebula, then if the planetesimals into which they
subsequently accreted ever melted, then the chondrules would also melt and
the textural evidence for them would be forever erased.
Alan Rubin
- Original Message -
From: "Greg Stanley"
And, of course, if the name is mis-spelled originally, the mis-spelling
persists as the official name: Forrest 001, Dyarrl Island (which should be
Dyaul or Djaul), etc.
Alan Rubin
- Original Message -
From: "Jeff Grossman" <[EMAIL PROTECTED]>
To:
Sent: Monday, Octob
It is very unusual to have one ordinary chondrite group mixed with another.
Dimmitt (H regolith breccia) has an LL5 clast; St. Mesmin (LL regolith
breccia) has some H clasts. Let's get this thing named officially through
the Nomenclature Committee.
Alan Rubin
- Original Me
ular models for chondrule
formation, for example, (say gamma-ray bursts) that no one uses and thus
don't pollute the literature.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
p
em as separate
meteorites with separate numbers and let the pairing be a scientifically
derived conclusion, not a curatorial assignment.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 31
etely) melted by heating caused by the decay of 26-Al. I am not of
these camps; it seems to me that heating of chondrites from type 3 to type 6
also results from impact heating and that the primitive achondrites formed
in an analogous way, but that is another story.
Alan
Alan Rubin
Institu
achondrite groups (e.g., HEDs, aubrites, angrites) are not important for
distinguishing chondrites from achondrites. But we are again faced with the
question of what heat source or sources caused achondrites to melt. Most
researchers would maintain that it was mainly 26-Al.
Alan Rubin
In
es lack olivine, others lack pyroxene, some are
coarse grained, some are fine-grained, some have a mixture of different size
grains, some include relict grains. This seems impossible to produce by the
molten planetesimal model.
Since I only have 10 fingers, I'll stop there.
Alan Rubin
Institu
portant to "let a thousand
flowers bloom."
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists
/MT,
nearly two-thirds the commercial value of a chondrite according to Jeff's
calculation. I'm sure that there are philosophical implications to this,
but I'm tired and can't figure them out.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of Cali
would be a great energy savings -- much less mass would have to be lifted
off the Earth.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
we
I was informed by Laurence Garvie that they don't deal in promises. They
will approve the name only after they are notified that an actual physical
specimen of the proper mass is in the possession of a qualified institution.
Alan
Alan Rubin
Institute of Geophysics and Planetary Ph
Peter informed me yesterday that some additional research is being done,
presumably on the sample that is to be donated to UCLA. If all goes
according to plan, then sometime, hopefully within the next few months,
we'll have the name approved.
Alan
Alan Rubin
Institute of Geophysic
some
additional research was done on the specimen. My only interest at this
point is to receive the specimen, log it in to the UCLA collection and
inform the NOMCOM that everything is now in order. I'm not holding anything
up.
Alan
Alan Rubin
Institute of Geophysics and Planetary Ph
crystallized
from the matrix melt.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html
is more likely that primitive
achondrites are impact-melted chondrites and are thus not that different
than chondrite impact-melt breccias and chondrite impact-melt rocks. As I
said earlier, the origin of these meteorites is not important for their
proper classification, but it can lead to heate
was
insufficient to distinguish essential from secondary properties. Similar
problems arose among classification schemes of living creatures and
especially fossils.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young D
operties influenced by cooling rate and
nucleation; the primary properties are the bulk chemical and isotopic
compositions of the irons.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1
s retained more
water and became more altered.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/
A few CK6s have impact-melt zones within them, but I haven't seen any such
zones in a CM.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucl
kind of a
meteorite it is before I see a thin section. Jason Utas, for example, is
much better at that than I am.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail
les.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html
- Original Message -
As Jeff Grossman uncovered, the smallest object named byu the NMomenclature
Committee is Y 8333 which weighs 12 mg. It corresponds to a particle about
2 mm in diameter.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr
ot;zone of sky vermin?" I think we're stuck with "asteroid," but must
not forget that the term also refers to starfish (which are, of course,
echinoderms from the class Asteroidea).
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Sl
If the largest enstatite chondrite was ever confiscated it would be an Abee
Sieze.
Spittle dripping down the chin of a prisoner could be considered a
con-drool.
If atheists are people who don't believe in God, are achondrites meteorites
that don't believe in chondrules?
themselves with the petrographic microscope. I don't worry so
much about the fuzzy line between classification and research.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone
the Earth itself."
One of the gallery's exhibits explains how to correctly identify meteorites.
Detailed explanations of the samples are provided in display cases and
brochures.
Alan Rubin, the associate curator of the gallery and a researcher in UCLA's
Department of Earth,
tougher than eucrites.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html
- Original
rth's
atmosphere to begin with.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html
I just lightly polish the C-coated section on a 1-µm lap and then clean it
with ethanol.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website
Novato is approved.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html
oxene.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html
- Original Message -
. The
low-Ca pyroxene is heated into the protopyroxene range and then rapidly
cooled to form twinned low-Ca clinopyroxene that very much resembles the
pyroxene phenocrysts in chondrules in unequilibrated chondrites.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of
to skip the CK step.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310-825-3202
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin.html
- Original Mess
gave us half of the
H chondrites, the original parent H chondrfite asteroid had already been
broken into several chunks, only one of which was struck at that time. The
same may be true for many kinds of meteorites.)
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of
olivine grains. There are also vary rare chondrule fragments, CAI fragments
and even one CAI in CI chondrites, indicating that they are real chondrites
in terms of texture as well as composition. There is no good reason to
believe that they are from Mars.
Alan Rubin
Institute of Geophysics and
NWA 8330 is a little more recrystallized than Ragland, although I concur
that they are both likely from the same parent asteroid.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
phone: 310
Yes, the word "itself" refers to the meteorite (or, more properly, the
meteoroid) and an artificial body would be a spacecraft of some sort.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA
rocks blasted off of Mercury spend millions of years in
independent heliocentric orbits before accreting once again with Mercury.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
office phone
This refers to modeling, not actual observations. Gladman and Coffey (2009)
MPS 44, 285-291 calculated that Mercury ejecta could achieve independent
orbits and re-accrete to Mercury after several million years.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
(i.e., subjected to metamorphic heating and aqueous
alteration at the same time), that would also not be covered by such a
scheme. Fitting complex rocks into classificatory straightjackets might
obscure more than it reveals.
Alan
Alan Rubin
Institute of Geophysics and Planetary Physics
University of
rock
misclassified.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
office phone: 310-825-3202
fax: 310-206-3051
e-mail: aeru...@ucla.edu
website: http://cosmochemists.igpp.ucla.edu/Rubin
(e) alteration of some chondrule mesostasis regions. Other
type-3 OC are more poorly studied than Semarkona and we are quite far from
creating a comprehensive alteration scheme.
Alan Rubin
Institute of Geophysics and Planetary Physics
University of California
3845 Slichter Hall
603 Charles Young
far as nomenclature is concerned, most scientists refer to
lunar material blasted off the Moon and delivered to Earth as
lunar meteorites. Meteorites found on the moon don't seem to have
a special label and are simply referred to as meteorites from the
Moon.
Alan
About 10-15 yewars ago, Graham Ryder published an abstract about
this. He concluded that rocks from the Earth's early crust would
be mixed into the lunar regolith. These would be rocks no longer
extant on the Earth. These materials would be of great scientific
value, and for the record, should
found in meteorites after Hahn.
He called it Hahnia meteorica. He also believed the Widmanstatten
pattern in the Toluca iron was composed of fossilized plants.
Alan Rubin
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Ok, I have a few, too:
NO EAR MASK
AIR PUNCH
WORD FEATHER
A GRAIL MAN
RON HID CART
RICE TOYS
Alan Rubin
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>
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--
Alan
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Alan Rubin
Institute of Geophysics and Planetary Physics
Department of Earth, Planetary, and Space Sciences
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angele
If any of you want an old reference, there is an abstract by Grant from
1968:
GRANT, R. W., 1968. The occurrence of silica minerals in meteorites.
Program 31st Meeting Meteoritical Sot., Cambridge, Mass., 1968 (abstract).
Alan Rubin
On Mon, Sep 25, 2017 at 9:48 AM, André Moutinho wrote
If anyone is interested, I'm ready and willing to classify the samples.
Alan Rubin
On Thu, Jan 18, 2018 at 11:24 AM, Bigjohn Shea via Meteorite-list <
meteorite-list@meteoritecentral.com> wrote:
> They found a few small specimens last I heard.
> Did they find the main mass?
&
al.com
> https://pairlist3.pair.net/mailman/listinfo/meteorite-list
>
--
Alan Rubin
Institute of Geophysics and Planetary Physics
Department of Earth, Planetary, and Space Sciences
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA 90095-1567
USA
office p
t the Bulletin, you need to
let the folks know (i.e., through Jeff Grossman) that this is warranted and
explain the reasons. Sometimes, the rock will indeed be reclassified and
sometimes it won't. It can be frustrating. I'm not familiar with Hart or
NWA 6047. You could email Tasha Dunn and ask
t our Facebook page https://www.facebook.com/meteoritecentral and the
> Archives at http://www.meteorite-list-archives.com
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Institute of Geophysics
rite-list mailing list
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> Archives at http://www.meteo
I examine the specimens (or images of them if they do not send pieces) and
then give them my best guess as to what the sample could be. Some people
are insistent that I am wrong or that I am running some kind of a scam. I
usually continue the conversation for one or two more rounds before I give
up
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Alan Rubin
Institute of Geophysics and Planetary Physics
Department of Earth, Planetary, and Space Sciences
University of California
3845 Slichter Hall
Of course, you could send an email to Gary Huss.
On Wed, Feb 16, 2022, 7:59 AM Sean T. Murray via Meteorite-list <
meteorite-list@meteoritecentral.com> wrote:
> Mendy,
>
> Many times those gaps are specimens that were sold between editions. I
> think they moved / sold some material quickly, and
ist2.pair.net/mailman/listinfo/meteorite-list
>>
>> __
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t; Shipping Address:
> 11 Atole Way
> Placitas, NM 87043
>
> (505) 750-7172
> (505) 573-5131
> Email: cb.a...@gmail.com
>
>
>
>
>
> On Wed, Jul 12, 2023 at 5:57 PM ALAN RUBIN via Meteorite-list
> wrote:
>>
>> [EXTERNAL]
>>
>> I discus
I am really surprised that a press release was issued on work that has not
even been submitted for peer-reviewed publication. There seems to be no age
data, no bulk chemical data, and no shock data. The authors seem to claim
it was launched off Earth just 10,000 years ago, but I don't know where
th
It would have a cosmic-ray exposure age of 4.4 billion years. No iron
meteorite has a CRE age anywhere near that.
On Tue, Jul 25, 2023, 1:32 PM Alfredo Petrov via Meteorite-list <
meteorite-list@meteoritecentral.com> wrote:
> There could be pieces of iron from Earth's core floating around the sol
For what it's worth, even though I have been studying meteorites for nearly
50 years, when I pick up a new find, I am wrong more often than right in
guessing what kind it is. I have to make a thin section and probe it.
Alan
On Tue, Jul 23, 2024, 6:31 AM Rhett Bourland via Meteorite-list <
meteorit
e-mail address: aeru...@ucla.edu If you do that, please
include your name and address in the note along with the payment.
I'll sign my article and send the issue out to you.
--
Alan Rubin
Institute of Geophysics and Planetary Physics
Department of Earth, Planetary, and Space Sciences
Uni
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Folks:
One of the newly arrived professors at UCLA wants to join the list.
How can she go about it?
--
Alan Rubin
Institute of Geophysics and Planetary Physics
Department of Earth, Planetary, and Space Sciences
University of California
3845 Slichter Hall
603 Charles Young Dr. E
Los Angeles, CA
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