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Page spéciale  NWA8269 chondrite H7

Spécial page  NWA8269 chondrite H7

Northwest Africa 8269  (Northwest Africa)
Purchased: 2013 Aug
Classification: Ordinary chondrite (H7)
History: Purchased by Alexandre Debienne in August 2013 from a dealer in Erfoud, Morocco.
Petrography: (A. Irving and S. Kuehner, UWS) Completely recrystallized with triple grain junctions and no chondrules. Olivine, orthopyroxene, augite, sodic plagioclase, merrillite, troilite and abundant kamacite.
Geochemistry: Olivine (Fa19.8-20.0), orthopyroxene (Fs16.5-16.6Wo1.4-1.6), augite (Fs6.1-6.5Wo44.7-44.1).
Classification: Ordinary chondrite (H7).
Specimens: 36 g including one polished probe mount at PSF; remainder with Mr. A. Debienne.

Place of purchase: Erfoud
Date: P 2013 Aug
Mass (g): 636.9
Pieces: 1
Class: H7
Shock stage: S2
Weathering grade: W1
Fayalite (mol%): 19.8-20.0
Ferrosilite (mol%): 16.5-16.6
Wollastonite (mol%): 1.4-1.6
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