NWA 11156 (50,880 g)

Northwest Africa 11156 (NWA 11156)
(Northwest Africa)
Purchased: 2016
Classification: HED achondrite (Eucrite, monomict)
History: The meteorite was bought in 2016 from a meteorite dealer in Morocco.
Physical characteristics: Grayish individual with patches of fusion crust.
Petrography: The meteorite displays a characteristic basaltic texture of up to 1 mm sized exsolved pyroxenes and up to 1.5 sized often lath-shaped calcic plagioclase. Minor phases include FeS, chromite, and silica. No metallic iron was found.
Geochemistry: low-Ca pyroxene: Fs60.9±0.4Wo2.0±0.4 (Fs60.2-61.4Wo1.6-3.0, n=14, FeO/MnO=30-33); Ca-pyroxene: Fs27.0±0.7Wo43.2±0.7 (Fs24.7-28.0Wo42.2-45.1, n=13, FeO/MnO=27-34); calcic plagioclase: An88.9±1.6 (An84.4-90.4, n=16)
 
Place of purchase:
Morocco
Date:
P 2016
Mass (g):
360
Pieces:
1
Class:
Eucrite-mmict
Shock stage:
moderate
Weathering grade:
low
Ferrosilite (mol%):
60.9; 27.0
Wollastonite (mol%):
2.0; 43.2
Classifier:
A. Greshake, MNB
Type spec mass (g):
21.9
Type spec location:
MNB
Main mass:
Philippe Schmitt-Kopplin
Comments:
Submitted by Ansgar Greshake