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NWA 8588   contributed by Suzanne Morrison, IMCA 5146   MetBul Link

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View all entries for   Meteorite (1)   Contributor (7)

Copyright (c) Suzanne Morrison, Backcountry Photography.

TKW 510 grams. Fall not observed. Purchased July 2013, Morocco.

From the MetBul
Physical characteristics: The stone (510 g) lacks fusion crust and has a weathered, brownish exterior; the interior consists of separated white and brownish clasts in a dark matrix.

Petrography: (A. Irving and S. Kuehner, UWS) Fragmental breccia composed predominantly of gabbroic eucrite clasts with some diabasic eucrite clasts in a sparse matrix of related debris. The grain size of pyroxene and plagioclase in gabbroic clasts ranges up to 1.4 mm. Primary minerals are exsolved pigeonite (with variable red-brown staining), calcic plagioclase (polycrystalline, birefringent), silica polymorph, ilmenite, Ti-bearing chromite, troilite and Ni-free iron metal; small amounts of secondary barite and calcite terrestrial weathering products are present.

Suzanne writes:
Astunningly beautiful brecciated Eucrite with some large clasts.

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Larry Atkins

This Month

Paul Swartz
 12/3/2016 6:01:50 PM
I'm impressed! Changes made here.
 12/3/2016 12:17:34 PM
Mendy you are really reputable, a gentleman, and a great scientist, too. This is an (uncommonly acquired) superbly prepared large full slice which must be such a treat to see in person. Large grain size and contrast matrix makes it a really interesting eucrite. Also high in titanium which for me conjures images of a mining base and space-faring outpost to be built based on Vesta one of these days ;-)
Mendy Ouzillou IMCA#8395
 12/3/2016 11:48:20 AM
Well so much for 100%! Doug, You are absolutely correct. Steve Witt handled that second stone and I had not updated my records to reflect that the classification had to be split for the two stones. Based on visual observations, there was at the time a (small) concern that they may be different. Final classification did prove that these were the same and thus paired, even though 7989 is listed as a polymict eucrite and the 8588 as an eucrite. So, my apologies to you. To be very clear, this mixup is my fault and I will update Suzanne and other clients as well. The website has already been updated as well to reflect the updated information. Thank you for the keen eye!
John Divelbiss
 12/3/2016 11:34:07 AM
MetBul says Mendy holds the 7689 mass from 510 g stone
Mendy Ouzillou IMCA#8395
 12/3/2016 10:40:55 AM
I am the main mass holder of NWA 7989 and I am the one who provided this material to Suzanne. So, it is 100% NWA 7989.
Paul Swartz
 12/3/2016 10:31:10 AM
MexicoDoug - can you provide details on why you believe this is NWA 7989 rather than 8588?
Wilford Krantz
 12/3/2016 9:54:32 AM
Amazing meteorite.
 12/3/2016 9:52:33 AM
It NWA 8588! This is not NWA 7989! It is likely paired to 7989, 8036, 8056, 8174, 8365, etc. A great looking slice that would make a great highly polished counter-top! Imaged in really bright, hot lighting, too. Thanks Suzanne
John Hope
 12/3/2016 2:38:55 AM
Spectacular, thank you for sharing Suzanne.

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