NWA 8267 – 1.17g

$85.00

1 in stock

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Description

CM2 chondrite

Fragment – 1.17g.
Sold in a membrane box with a label/certificate of authenticity.


Northwest Africa 8267 (NWA 8267)
(Northwest Africa)
Purchased: 2014 Jan
Classification: Carbonaceous chondrite (CM2)
History: Purchased by F. Kuntz in January 2014 from a dealer in Rissani, Morocco.
Petrography: (A. Irving and S. Kuehner, UWS) Very small (0.4±0.2 mm) chondrules, mineral fragments and sparse CAI in a deep brown, very fine grained matrix containing cronstedtite and pentlandite.
Geochemistry: Olivine (Fa0.4-40.0, N = 3), orthopyroxene (Fs0.8-0.9Wo1.0-3.2, N = 3), clinopyroxene (Fs1.2-3.7Wo36.5-41.4).
Classification: Carbonaceous chondrite (CM2).
Specimens: 13.4 g including one polished thin section at UWB. The remaining material is held by Kuntz.

Place of purchase: Rissani
Date: P 2014 Jan
Mass (g): 64.3
Pieces: many
Class: CM2
Shock stage: S2
Weathering grade: low
Fayalite (mol%): 0.4-40.0
Ferrosilite (mol%): 0.8-0.9
Wollastonite (mol%): 1.0-3.2
Classifier: A. Irving and S. Kuehner, UWS
Type spec mass (g): 13.4
Type spec location: UWB
Main mass: F. Kuntz
Comments: K208; submitted by A. Irving