Meteorite: 20.14 gram NWA 13187 martian shergottite slice

Description

HI all!
My name is Mark Lyon, and I’m a member of the International Meteorite Collectors Association, member number 6752. My business model is to buy in bulk and turn over inventory quickly (often through no-reserve auctions) giving you the best possible prices.
When you finish looking at this, please look at my other no reserve sales and auctions, and feel free to contact me if you don't see exactly what you are looking for.
Up for sale here is a  20.14 gram NWA 13187 martian shergottite  slice
Northwest Africa 13187
Basic information
Name:
Northwest Africa 13187
This is an OFFICIAL meteorite name.
Abbreviation:
NWA 13187
Observed fall:
No
Year found:
2019
Country:
(Northwest Africa)
Mass:
1600 g
Classification
history:
Recommended:
Martian (shergottite)
[explanation]
This is 1 of 249 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).
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Search for other:
Martian meteorites
Comments:
Approved 29 Feb 2020
Writeup
Writeup from MB 109:
Northwest Africa 13187
(NWA 13187)
(Northwest Africa)
Purchased: 2019 Sep
Classification: Martian meteorite (Shergottite)
History
: Purchased by
Mark
Lyon
in September 2019 from a Moroccan dealer. Some of this material was subsequently sold to Mike Fleeman and Roberto Vargas.
Petrography
: (A. Irving,
UWS
and P. Carpenter,
WUSL
) Diabasic texture. Composed predominantly of zoned clinopyroxene and maskelynite with accessory ulvöspinel (some Cr-bearing), ilmenite, silica polymorph, merrillite, pyrrhotite and minor secondary calcite.
Geochemistry
: Subcalcic augite cores (Fs
20.3-23.3
Wo
36.2-32.0
, FeO/MnO = 28-29, N = 4), ferroan pigeonite rims (Fs
52.4-59.2
Wo
14.2-19.7
, FeO/MnO = 36-39, N = 4), maskelynite (An
50.5-57.2
Or
1.9-0.7
, N = 3).
Classification
: Shergottite (diabasic).
Specimens
: 20.1 g including one polished thin section at
UWB
; remainder held by Mr. M.
Lyon
, Mr. M. Fleeman (550 g) and Mr. R. Vargas (50 g).
Data from:
MB109
Table 0
Line 0:
Place of purchase:
Morocco
Date:
P 2019 Sep
Mass (g):
1600
Pieces:
2
Class:
Martian (shergottite)
Shock stage:
high
Weathering grade:
low
Ferrosilite (mol%):
20.3-23.3; 52.4-59.2
Wollastonite (mol%):
36.2-32.0; 14.2-19.7
Classifier:
A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):
20.1
Type spec location:
UWB
Main mass:
M. Lyon/M. Fleeman/R. Vargas
Comments:
Work name Lyon19-2; submitted by A. Irving