NWA 13850 (37,657 g)

NWA 13850 (37,657 g)

Northwest Africa 13850 (NWA 13850)

(Northwest Africa)

Purchased: January, 2021

Classification: Ureilite

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

Physical characteristics: Dark-grayish rock without fusion crust.

Petrography: The meteorite shows a coarse-grained cumulate texture of olivine and pigeonite grains up to 2.5 mm in sizes. Olivine and pyroxene display characteristic reduced rims and the meteorite contains flaky graphite.

Geochemistry: reduced rims in olivine: Fa3.5-4.6; olivine contains 0.82±0.04 wt% Cr2O3 and 0.42±0.01 wt% CaO; reduced rims in pyroxene: Fs6.4-7.6Wo7.5-8.5; pigeonite contains 1.10±0.03 wt% Cr2O3 and 0.31±0.01 wt% Al2O3

 

Place of purchase: Morocco
Date: P January, 2021
Mass (g): 856
Pieces: 1
Class: Ureilite
Shock stage: low
Weathering grade: low
Fayalite (mol%): 15.6±0.1 (n=6)
Ferrosilite (mol%): 13.2±0.1 (n=6)
Wollastonite (mol%): 8.4±0.1 (n=6)
Classifier: A. Greshake, MNB
Type spec mass (g): 23.2
Type spec location: MNB
Main mass: Hanno Strufe
Comments: Submitted by Ansgar Greshake

 

 

 

    940,00 €Preis
    • Facebook