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NWA 11542

Sahara
Found in 2017
CO3.0
Total mass : 75.1g

Specimen in collection :
1.04g

 

Northwest Africa 11542 (NWA 11542)
(Northwest Africa)
Purchased: 2017
Classification: Carbonaceous chondrite (CO3.0)

Physical characteristics: Brownish fragments

Petrography: (J. Gattacceca, H. Pourkhorsandi, CEREGE) Small chondrules set in a fine-grained iron-rich matrix. Chondrules 60 vol%, matrix 40 vol% (point counting, N=156). Small CAI are present.

Geochemistry: Olivine Fa22.8±23.4, range 0.8-66.9, PMD 94% (N=18), Cr2O3 in ferroan olivine 0.30±0.12 wt% (N=9).

Classification: Carbonaceous chondrite (CO3.0). Cr2O3 content of ferroan olivine suggest a low petrographic subtype (similar to Colony).

Specimens: Type specimen at CEREGE. Main mass with Kuntz.