NWA 14636 ( 0,815 g )
Northwest Africa 14636 (NWA 14636)
Diogenite, (Northwest Africa)
Purchased: 2021 Dec
Classification: HED achondrite (Diogenite)
History: The meteorite was purchased from a meteorite dealer in Morocco.
Physical characteristics: Brownish rock with minor fusion crust.
Petrography: The meteorite shows a protogranular texture predominatly of orthopyroxene up to 4.5 mm in size with minor interstitial augite. Accessory phases include silica, Ti-poor chromite, and troilite. No metallic iron found. The meteorite appears unbrecciated and contains few shock melt pockets.
Geochemistry: low-Ca pyroxene: Fs26.7±0.2Wo2.7±0.1 (Fs26.4-27.1Wo2.6-3.0, FeO/MnO=25-33, n=9); Ca-pyroxene: Fs11.5±0.3Wo43.5±0.2 (Fs11.2-11.9Wo43.2-43.7, FeO/MnO=25-33, n=7)
State/Prov/County: | Diogenite |
Place of purchase: | Morocco |
Date: | P 2021 Dec |
Mass (g): | 630.3 |
Pieces: | 1 |
Class: | Diogenite |
Shock stage: | moderate |
Weathering grade: | moderate |
Ferrosilite (mol%): | 26.7; 11.5 |
Wollastonite (mol%): | 2.6; 43.5 |
Classifier: | A. Greshake, MNB |
Type spec mass (g): | 23.6 |
Type spec location: | MNB |
Main mass: | Hanno Strufe and Andreas Grünemeyer |
Comments: | Submitted by Ansgar Greshake |