NWA 14636 ( 4,353 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