Re: [meteorite-list] Osceola Meteorite is Official!
Hi Rob, All, Steve may have beat me there, I'm not sure. I arrived sometime in the a.m. the day after the fall. Sincerely, Larry Atkins IMCA # 1941 Ebay alienrockfarm On Saturday, April 2, 2016 Rob Matson via Meteorite-list wrote: Congratulations to Mike, Larry, Laura, Josh and Brendan for their aggressiveness in getting to the fall location quickly and their persistence in the face of very unfavorable searching conditions (SWAMP!) It is an impressive feat that anything was found at all, even with the nice radar returns. I have one correction: I'm pretty sure Larry was the second on the scene. Steve Arnold drove all night from Arkansas to arrive (I believe) the morning after the fall -- Monday, January 25. --Rob -Original Message- From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Michael Gilmer via Meteorite-list Sent: Saturday, April 02, 2016 11:00 AM To: Meteorite List Subject: [meteorite-list] Osceola Meteorite is Official! Osceola meteorite is official, approved by NonCom and entered into the Met Bull today - http://www.lpi.usra.edu/meteor/metbull.php?code=63109 Osceola 30�27.16�N, 82�27.25�W Florida, USA Confirmed fall: 2016 Jan 24 Classification: Ordinary chondrite (L6) History: (Mike Hankey, Larry Atkins, Laura Atkins, Josh Adkins, Brendan Fallon, Robert Matson, Marc Fries) On Sunday Morning 24 January at 10:27 EST (15:27 UTC) a large daytime fireball streaked across the sky in northern Florida. Over 100 eyewitnesses reported the event to the American Meteor Society (Event 2016-266), describing a white sparkling head and plume of white smoke left behind. Fireball researchers Marc Fries and Rob Matson, found the American Meteor Society witness trajectory intersected with a group of radar returns that appeared shortly after the fall. The radar returns were strong, found at multiple altitudes and located on multiple stations: KJAX, KVAX and KTHL. Larry Atkins was the first on the scene. Mike Hankey arrived 5 days after the fall with Brendan Fallon and joined Larry and Laura Atkins in the hunt. On the 6th day, Mike Hankey found the first stone at 8.5 g on the eastern edge of the primary radar return. Within 2 hours Larry Atkins found the second stone (18.5 g) directly under the radar. The next day, two more stones were found: a 5.5 g stone by Laura Atkins and a 48.5 g stone by Mike Hankey. Six days later over 2 miles away from the first find, an 839 g mass was found by Josh Adkins and Brendan Fallon. A week after that, Larry Atkins found the last stone, weighing 75.5 g. In total 6 stones were found over a three week hunting period for a total weight of 990.5 g. Physical characteristics: Thin, well formed shiny fusion crust covers the exterior of four of the stones, while two of them, the 43 g and the 839 g are matte black. This is likely due to submersion in wet sand and/or water prior to recovery. Some small rust spots are evident on some of the stones as well. Small regmaglypts are present on the 43 g and the 839 g stones, and the remaining stones are irregularly shaped with little to no orientation. Some chondrules are visible through the crust. The interior of the meteorites are slightly darkened due to shock. Shock veins are present, some of which are black while others are filled with metal, appearing as long "strings" up to 3 mm long. Though most of the chondrules have been altered and are not well defined, some rare, large chondrules up to 0.8 mm are present. Petrography: Plagioclase grains are up to 100 �m in size, consistent with type 6. No maskelynite was found. There are numerous chromite-plagioclase assemblages, consistent with moderately strong shock. Chromite grains are fractured. Troilite is polycrystalline. Metallic copper occurs as 2-�m-thick bands at the metal-troilite interface in an opaque assemblage. The chondrules are recrystallized and poorly defined. The only discernible chondrules are large ones, 800-1000 �m across; these are BO and PO textural types. Geochemistry: Olivine Fa23.7�0.3 (n=21), Orthopyroxene Fs20.2�0.2Wo1.6�0.2 (n=14). Also present are small grains of diopside: Fs7.4 Wo44.9 (n=1). Plagioclase has a mean composition of Ab71.7�1.6 Or8.8�2.5 (n=8); the low Na and high K values are a result of shock. Specimens: 21.8 g at UCLA __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Osceola searches
Rob, A quick tally suggests I spent approximately 190 hours in the field for my 2 stones. My friend Darryl and my Uncle Brent spent about 80 hours each, without a find. Laura probably hunted about 125 hours or so for her one stone. My 2 brothers were there for a few days, no finds. Mike made his 2 finds rather quickly, this was his fall ; ) Josh and Brendon I can't recall how many hours for their 1 stone but I'd say they hunted at least 7-10 days. It was a tough hunt, just like most of them! Sincerely, Larry Atkins IMCA # 1941 Ebay alienrockfarm On Saturday, April 2, 2016 Rob Matson via Meteorite-list wrote: Hi Mike -- best of luck on your next trip out there. For everyone to appreciate just how hard the searching is there, it would be great if those that have been could provide an estimate of how many hours they spent. Mexico Doug put in a LOT of time out there. Obviously so did Larry, Mike, Laura, Josh and Brendan. Steve Arnold was there at least 2 or 3 days but unfortunately w/o a space rock for his troubles. --Rob -Original Message- From: Michael Gilmer [mailto:meteoritem...@gmail.com] Sent: Saturday, April 02, 2016 1:08 PM To: Rob Matson Cc: meteorite-list Subject: Re: [meteorite-list] Osceola Meteorite is Official! Hi Rob and List, I can attest to the difficult terrain. I certainly picked a doozie for my first meteorite hunt. Even though I have hiked much of Florida's forests and backwoods, I usually avoid the swampy areas. I did not have the luxury of avoiding swamp with this hunt. I brought my hip-waders and managed to reach a few dry places that were surrounded by water, but nothing was found. I am heading back before the end of April for one last college try before I hang it up. Did Arkansas Steve find anything? Best regards and Happy Huntings, MikeG __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
[meteorite-list] $1.99 eBay auctions with NO RESERVE - ends in 24 hours
http://www.ebay.com/sch/mr-meteorite/m.html?item=222072286936&ssPageName=STRK%3AMESELX%3AIT&rt=nc&LH_Auction=1 -- Rock On! Ruben Garcia http://www.MrMeteorite.com __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Osceola
I nominate a new term to describe a swampy area where a meteorite falls - the strewnswamp. Best regards, MikeG On 4/3/16, MexicoDoug via Meteorite-list wrote: > Thanks Rob! Does being there 4 days before the fall figure in anywhere? :-) > > Though Larry may not have been first on the field, nor found the first, or > for all I know, the last one ... his dedication and larger specimen is a > fresh virgin princess IMO! I really hope the temptation to expose the fresh > interior never arises. > > It would be very instructive to know the weight of the current main mass as > found and then as well dried, as I can easily see 100 or more grams of water > taken up by it, a real consideration for reporting the weights of most of > these stones. > > Kindest wishes > Doug > > > -Original Message- > From: Rob Matson via Meteorite-list > To: 'meteorite-list' > Sent: Sat, Apr 2, 2016 4:02 pm > Subject: Re: [meteorite-list] Osceola Meteorite is Official! > > Congratulations to Mike, Larry, Laura, Josh and Brendan for their > aggressiveness ingetting to the fall location quickly and their persistence > in the face of veryunfavorable searching conditions (SWAMP!) It is an > impressive feat that anythingwas found at all, even with the nice radar > returns.I have one correction: I'm pretty sure Larry was the second on the > scene. SteveArnold drove all night from Arkansas to arrive (I believe) the > morning afterthe fall -- Monday, January 25. --Rob-Original > Message-From: Meteorite-list > [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Michael > Gilmer via Meteorite-listSent: Saturday, April 02, 2016 11:00 AMTo: > Meteorite ListSubject: [meteorite-list] Osceola Meteorite is > Official!Osceola meteorite is official, approved by NonCom and entered into > theMet Bull today - > http://www.lpi.usra.edu/meteor/metbull.php?code=63109Osceola > 30�27.16�N, 82�27.25�WFlorida, USAConfirmed fall: 2016 Jan 24Classification: > Ordinary chondrite (L6)History: (Mike Hankey, Larry Atkins, Laura Atkins, > Josh Adkins,Brendan Fallon, Robert Matson, Marc Fries) On Sunday Morning > 24January at 10:27 EST (15:27 UTC) a large daytime fireball streakedacross > the sky in northern Florida. Over 100 eyewitnesses reported theevent to the > American Meteor Society (Event 2016-266), describing awhite sparkling head > and plume of white smoke left behind. Fireballresearchers Marc Fries and Rob > Matson, found the American MeteorSociety witness trajectory intersected with > a group of radar returnsthat appeared shortly after the fall. The radar > returns were strong,found at multiple altitudes and located on multiple > stations: KJAX,KVAX and KTHL. Larry Atkins was the first on the scene. Mike > Hankeyarrived 5 days after the fall with Brendan Fallon and joined Larry > andLaura Atkins in the hunt. On the 6th day, Mike Hankey found the > firststone at 8.5 g on the eastern edge of the primary radar return. Within2 > hours Larry Atkins found the second stone (18.5 g) directly underthe radar. > The next day, two more stones were found: a 5.5 g stone byLaura Atkins and a > 48.5 g stone by Mike Hankey. Six days later over 2miles away from the first > find, an 839 g mass was found by Josh Adkinsand Brendan Fallon. A week after > that, Larry Atkins found the laststone, weighing 75.5 g. In total 6 stones > were found over a three weekhunting period for a total weight of 990.5 > g.Physical characteristics: Thin, well formed shiny fusion crust coversthe > exterior of four of the stones, while two of them, the 43 g andthe 839 g are > matte black. This is likely due to submersion in wetsand and/or water prior > to recovery. Some small rust spots are evidenton some of the stones as well. > Small regmaglypts are present on the 43g and the 839 g stones, and the > remaining stones are irregularlyshaped with little to no orientation. Some > chondrules are visiblethrough the crust. The interior of the meteorites are > slightlydarkened due to shock. Shock veins are present, some of which > areblack while others are filled with metal, appearing as long "strings"up > to 3 mm long. Though most of the chondrules have been altered andare not > well defined, some rare, large chondrules up to 0.8 mm > arepresent.Petrography: Plagioclase grains are up to 100 �m in size, > consistentwith type 6. No maskelynite was found. There are > numerouschromite-plagioclase assemblages, consistent with moderately > strongshock. Chromite grains are fractured. Troilite is > polycrystalline.Metallic copper occurs as 2-�m-thick bands at the > metal-troiliteinterface in an opaque assemblage. The chondrules are > recrystallizedand poorly defined. The only discernible chondrules are large > ones,800-1000 �m across; these are BO and PO textural types.Geochemistry: > Olivine Fa23.7�0.3 (n=21), OrthopyroxeneFs20.2�0.2Wo1.6�0.2 (n=14). Also > present are small grains of diopside:Fs7.4 Wo44.9 (n=1). Plagioclase has a > mean composition of Ab71.7�1.6Or8.8�2.5 (n=8
[meteorite-list] Osceola
Thanks Rob! Does being there 4 days before the fall figure in anywhere? :-) Though Larry may not have been first on the field, nor found the first, or for all I know, the last one ... his dedication and larger specimen is a fresh virgin princess IMO! I really hope the temptation to expose the fresh interior never arises. It would be very instructive to know the weight of the current main mass as found and then as well dried, as I can easily see 100 or more grams of water taken up by it, a real consideration for reporting the weights of most of these stones. Kindest wishes Doug -Original Message- From: Rob Matson via Meteorite-list To: 'meteorite-list' Sent: Sat, Apr 2, 2016 4:02 pm Subject: Re: [meteorite-list] Osceola Meteorite is Official! Congratulations to Mike, Larry, Laura, Josh and Brendan for their aggressiveness ingetting to the fall location quickly and their persistence in the face of veryunfavorable searching conditions (SWAMP!) It is an impressive feat that anythingwas found at all, even with the nice radar returns.I have one correction: I'm pretty sure Larry was the second on the scene. SteveArnold drove all night from Arkansas to arrive (I believe) the morning afterthe fall -- Monday, January 25. --Rob-Original Message-From: Meteorite-list [mailto:meteorite-list-boun...@meteoritecentral.com] On Behalf Of Michael Gilmer via Meteorite-listSent: Saturday, April 02, 2016 11:00 AMTo: Meteorite ListSubject: [meteorite-list] Osceola Meteorite is Official!Osceola meteorite is official, approved by NonCom and entered into theMet Bull today - http://www.lpi.usra.edu/meteor/metbull.php?code=63109Osceola30�27.16�N, 82�27.25�WFlorida, USAConfirmed fall: 2016 Jan 24Classification: Ordinary chondrite (L6)History: (Mike Hankey, Larry Atkins, Laura Atkins, Josh Adkins,Brendan Fallon, Robert Matson, Marc Fries) On Sunday Morning 24January at 10:27 EST (15:27 UTC) a large daytime fireball streakedacross the sky in northern Florida. Over 100 eyewitnesses reported theevent to the American Meteor Society (Event 2016-266), describing awhite sparkling head and plume of white smoke left behind. Fireballresearchers Marc Fries and Rob Matson, found the American MeteorSociety witness trajectory intersected with a group of radar returnsthat appeared shortly after the fall. The radar returns were strong,found at multiple altitudes and located on multiple stations: KJAX,KVAX and KTHL. Larry Atkins was the first on the scene. Mike Hankeyarrived 5 days after the fall with Brendan Fallon and joined Larry andLaura Atkins in the hunt. On the 6th day, Mike Hankey found the firststone at 8.5 g on the eastern edge of the primary radar return. Within2 hours Larry Atkins found the second stone (18.5 g) directly underthe radar. The next day, two more stones were found: a 5.5 g stone byLaura Atkins and a 48.5 g stone by Mike Hankey. Six days later over 2miles away from the first find, an 839 g mass was found by Josh Adkinsand Brendan Fallon. A week after that, Larry Atkins found the laststone, weighing 75.5 g. In total 6 stones were found over a three weekhunting period for a total weight of 990.5 g.Physical characteristics: Thin, well formed shiny fusion crust coversthe exterior of four of the stones, while two of them, the 43 g andthe 839 g are matte black. This is likely due to submersion in wetsand and/or water prior to recovery. Some small rust spots are evidenton some of the stones as well. Small regmaglypts are present on the 43g and the 839 g stones, and the remaining stones are irregularlyshaped with little to no orientation. Some chondrules are visiblethrough the crust. The interior of the meteorites are slightlydarkened due to shock. Shock veins are present, some of which areblack while others are filled with metal, appearing as long "strings"up to 3 mm long. Though most of the chondrules have been altered andare not well defined, some rare, large chondrules up to 0.8 mm arepresent.Petrography: Plagioclase grains are up to 100 �m in size, consistentwith type 6. No maskelynite was found. There are numerouschromite-plagioclase assemblages, consistent with moderately strongshock. Chromite grains are fractured. Troilite is polycrystalline.Metallic copper occurs as 2-�m-thick bands at the metal-troiliteinterface in an opaque assemblage. The chondrules are recrystallizedand poorly defined. The only discernible chondrules are large ones,800-1000 �m across; these are BO and PO textural types.Geochemistry: Olivine Fa23.7�0.3 (n=21), OrthopyroxeneFs20.2�0.2Wo1.6�0.2 (n=14). Also present are small grains of diopside:Fs7.4 Wo44.9 (n=1). Plagioclase has a mean composition of Ab71.7�1.6Or8.8�2.5 (n=8); the low Na and high K values are a result of shock.Specimens: 21.8 g at UCLA__Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.
[meteorite-list] Meteorite Picture of the Day
Today's Meteorite Picture of the Day: Chergach Contributed by: John Divelbiss http://www.tucsonmeteorites.com/mpodmain.asp?DD=04/03/2016 __ Visit our Facebook page https://www.facebook.com/meteoritecentral and the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com https://pairlist3.pair.net/mailman/listinfo/meteorite-list
