NWA 15729 ( 10,030 g )

Northwest Africa 15729 (NWA 15729)
(Northwest Africa)
Purchased: Jun 2022
Classification: Ordinary chondrite (LL3)
History: Reportedly found by nomads in Mauritania und subsequently purchased by Mr. Jasper Spencer from a Mauritanian dealer via Facebook Messenger.
Physical characteristics: Many brownish stones lacking fusion crust.
Petrography: The meteorite shows a chondritic texture with well-defined, mostly flattened and packed chondrules (mean diameter about 0.9 mm) in a fine-grained light brownish matrix that contains partly altered sulfides and rare FeNi metal.
Geochemistry: Cr2O3 in ferroan olivine 0.05±0.06 wt%, n=30.
Classification: Ordinary chondrite (LL3).
 
Place of purchase:
Mauritania
Date:
P Jun 2022
Mass (g):
957
Pieces:
many
Class:
LL3
Shock stage:
S2
Weathering grade:
W2
Fayalite (mol%):
16.4±9.3 (1.4-35.9, n=28)
Ferrosilite (mol%):
10.9±7.2 (1.7-19.4, n=29)
Wollastonite (mol%):
1.1±1.0 (0.2-3.8, n=29)
Magnetic suscept.:
3.92
Classifier:
A. Greshake, MNB
Type spec mass (g):
38.8
Type spec location:
MNB
Main mass:
Jasper Spencer
Comments:
Submitted by Ansgar Greshake