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Roll Overs:
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Copyright (c) Copyright Andreas Gren.
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See Contributor comments below. Iron, IIG
TKW 20.69 kg. Fall not observed. Found 9 May 1984, Twannberg, Canton of Berne, Switzerland.
1 of only 6 meteorites with this classification.
Andreas writes:
Slice TW #251-3 23.7 grams 41 x 36 x 3.5 mm with Neumann lines.
Every single Twannberg mass is analyzed, confirmed and numbered by Beda Hofmann, curator of the Earth Science Department of the Natural History Museum Bern, Switzerland. The numbers have the prefix “TW” which stands for Twannberg meteorite.
The official list of finds makes every single piece unique! Individual number, date of find, finder and coordinates are published in a new book which illustrates the new Twannberg finds (Hofmann B., Jost M., Koppelt A., 2016 Der Twannberg-Eisenmeteorit, Funde 1984-2016. ISBN: 978-3-033-05736-4, English Summary, German text).
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Found at the arrow (green or red) on the map below
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Bernd Pauli
10/27/2016 3:25:11 PM |
Rolf would have been extremely pleased if he had lived to see all these new Twannberg finds! => Rolf W. B*hler (1988) Meteorite, Urmaterie aus dem interplanetaren Raum, pp. 62-64. |
Andreas Koppelt
10/27/2016 2:04:22 PM |
Cool etch, Andi. I think I saw this piece today at the Munich Show... ;-) |
MexicoDoug
10/27/2016 1:07:55 PM |
Great hexahedrite and very fresh etched surface. Amazing locality from landlocked non-arid place that is 10 times older than Gold Basin, and lower nickel but multiple times older than Toluca! Thanks Andi |
John Divelbiss
10/27/2016 1:06:32 PM |
this type material (Hexahedrites) always amazes me with the kamacite Neumann line/band structure. |
Wilford Krantz
10/27/2016 11:03:01 AM |
Cool! |
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