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NWA 8588   contributed by Suzanne Morrison, IMCA 5146   MetBul Link

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View all entries for   Meteorite (1)   Suzanne Morrison (7)


Copyright (c) Suzanne Morrison, Backcountry Photography.
  Eucrite

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.


  Click to view larger photos     #1


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Paul Swartz
 12/3/2016 6:01:50 PM
I'm impressed! Changes made here.
MexicoDoug
 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.
MexicoDoug
 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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