NWA 11540 – 4.10g

$45.00

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Description

CO3 chondrite

Individual – 4.10g
Sold with label/certificate of authenticity.


Northwest Africa 11540 (NWA 11540)

(Northwest Africa)

Purchased: 2017

Classification: Carbonaceous chondrite (CO3)

Physical characteristics: Brownish fragments

Petrography: (J. Gattacceca, H. Pourkhorsandi, CEREGE) Small chondrules set in a fine-grained iron-rich matrix. Chondrules 50 vol%, matrix 50 vol% (point counting, N=136). Small CAI are present.

Geochemistry: Olivine Fa13.7±18.5, range 0.7-48.4, PMD 101% (N=13), Cr2O3 in ferroan olivine 0.08±0.05 wt% (N=9). Orthopyroxene Fs1.4±0.3Wo1.9±1.2 (N=4).

Classification: Carbonaceous chondrite (CO3)

Specimens: Type specimen at CEREGE. Main mass with Kuntz and PM. Pelé.

Mass (g): 276.3
Pieces: many
Class: CO3
Weathering grade: moderate
Magnetic suscept.: 3.87
Classifier: J. Gattacceca, H. Pourkhorsandi, CEREGE
Type spec mass (g): 20.60
Type spec location: CEREGE
Main mass: Kuntz + PM. Pelé
Comments: work name K343; submitted by Jérôme Gattacceca.