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 |