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Northwest Africa 12398
Basic information Name: Northwest Africa 12398
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12398
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 230 g
Classification
  history:
Recommended:  Diogenite    [explanation]

This is 1 of 421 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 9 Feb 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12398 (NWA 12398)

(Northwest Africa)

Purchased: 2018

Classification: HED achondrite (Diogenite)

History: The meteorite was purchased from a local meteorite dealer in Morocco.

Physical characteristics: Seven greyish fragments partly covered with fusion crust.

Petrography: The meteorite is a monomict breccia predominantly composed of blocky up to 1.3 mm sized orthoproxenes grains and fine-grained cataclastic regions. Minor phases include plagioclase, chromite, FeS, and metallic iron.

Geochemistry: Low-Ca pyroxene: Fs24.8±0.2Wo3.5±0.2 (Fs24.4-25.2Wo3.1-3.7, n=13, FeO/MnO=28-33); calcic plagioclase: An87.7±1.5 (An85.8-89.2, n=9)

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):229.9
Pieces:7
Class:Diogenite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):24.8
Wollastonite (mol%):3.5
Classifier:A. Greshake, MNB
Type spec mass (g):21.5
Type spec location:MNB
Main mass:Vincent Gira
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6709 approved meteorites from (Northwest Africa) (plus 2022 unapproved names)

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