top of page
NWA 13336  (3,888 g)

NWA 13336 (3,888 g)

Northwest Africa 13336 (NWA 13336)

(Northwest Africa)

Purchased: 2020

Classification: Carbonaceous chondrite (CR2)

History: The meteorite was purchased from a meteorite dealer in Morocco.

Physical characteristics: Light-brownish rock with some fusion crust.

Petrography: The meteorite is a carbonaceous chondrite composed of abundant, often slightly flattened chondrules with an apparent mean diameter of about 800 µm and about 30-40% almost black matrix. Chondrules are mostly of type I but two type II chondrules with highly unequilibrated olivine were observed in the section studied. Some chondrules are metal-decorated typical of CR.

Geochemistry: olivine in type I chondrules: Fa1.3±0.4, Cr2O3: 0.49±0.05 wt%, n=13; low-Ca pyroxene: Fs2.8±0.3Wo0.5±0.6, n=16; olivine in type II chondrules: Fa28.3±9.0 (Fa17.0-46.1, n=9). Matrix analyses yield an average total of 88.1±1.2 wt% (5 µm defocused beam, N=10) suggesting the presence of hydrous minerals.

 

Place of purchase:Morocco
Date:P 2020
Mass (g):290
Pieces:1
Class:CR2
Shock stage:S1
Weathering grade:W2
Fayalite (mol%):1.3; 28.3
Ferrosilite (mol%):2.8
Wollastonite (mol%):0.5
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake

 

 

    115,00 €Preis
    • Facebook
    bottom of page