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Martian Meteorite SHERGOTTITE 43.6 gram end cut I NWA 12269

Top Meteorite

  • $ 6,540.00


On Offer: MARTIAN METEORITE full Slice.
Type: Shergottite
Origin: MARS
Official name: NWA 12269
Description: A 8.367 gram full slice of a Martian meteorite that was ejected by a meteorite impacting the surface of Mars and hurling it to Earth. A lovely 8.367 gram specimen of a well known martian shergottite NWA 12269. This slice is polished on one side.
Approximate Dimensions: 44mm x 28.12mm x 3.45mm
What you get: 8.367 gram slice of NWA12269 Martian Meteorite Specimen as Shown, Membrane Storage/Display Box, Signed Certificate of Authenticity.
I offer a 100% no questions asked 30 day return policy.  
Northwest Africa 12269
Basic information Name: Northwest Africa 12269
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12269 
Observed fall: No
Year found: 2018
Country: (Northwest Africa) 
Mass:help 1679 g
Recommended:   Martian (shergottite)    [explanation]

This is 1 of 195 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 11 Dec 2018
Writeup from MB 107: 

Northwest Africa 12269 (NWA 12269)

(Northwest Africa)

Purchased: 2018 Jul

Classification: Martian meteorite (Shergottite)

History: Purchased in Ouarzazate, Morocco by Mohamed Aid in July 2018.

Petrography: (A. Irving and S. Kuehner, UWS; P. Carpenter, WUSL) Relatively fine grained with intersertal texture. Composed predominantly of zoned clinopyroxene and maskelynite (some exhibiting a curved, narrow lath-like habit) with accessory fine grained intergrowths of hedenbergite+fayalite+silica, Fe-Ti oxides, merrillite and pyrrhotite.

Geochemistry: Subcalcic augite (Fs24.8-41.8Wo31.4-24.3, FeO/MnO = 30-33, N = 3), ferropigeonite (Fs66.9-73.0Wo16.6-16.5, FeO/MnO = 41-43, N = 2), maskelynite (An51.9-53.1Or1.3-1.2, N = 2).

Classification: Martian (shergottite, fine-intersertal)

Specimens: 20.5 g including one polished thin section at UWB; remainder with Mr. Aaronson.

Data from:
  Table 0
  Line 0:
Place of purchase: Ouarzazate
Date: P 2018 Jul
Mass (g): 1679
Pieces: 1
Class: Martian (shergottite)
Shock stage: high
Weathering grade: low
Ferrosilite (mol%): 24.8-41.8
Wollastonite (mol%): 31.4-24.3
Classifier: A. Irving, P. Carpenter, and S. Kuehner, UWS
Type spec mass (g): 20.5
Type spec location: UWB
Main mass: Aaronson
Comments: Work name MA18-201; submitted by A. Irving



ID: NWA1226920_43.6_04

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