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Northwest Africa 12657
Basic information Name: Northwest Africa 12657
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12657
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 96 g
Classification
  history:
Recommended:  H5    [explanation]

This is 1 of 9655 approved meteorites (plus 16 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 May 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12657 (NWA 12657)

(Northwest Africa)

Purchased: 2019

Classification: Ordinary chondrite (H5)

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

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2019
Mass (g):96
Pieces:1
Class:H5
Shock stage:S1
Weathering grade:W3
Fayalite (mol%):17.8±0.1 (n=13)
Ferrosilite (mol%):15.2±0.2 (n=15)
Wollastonite (mol%):1.0±0.9 (n=15)
Classifier:A. Greshake, MNB
Type spec mass (g):23.5
Type spec location:MNB
Main mass:Mohamed Lamine
Comments:plagioclase grain size about 20 µm; submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
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 7035 approved meteorites from (Northwest Africa) (plus 2000 unapproved names)

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