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Northwest Africa 7537
Basic information Name: Northwest Africa 7537
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7537
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 76 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Howardite
Recommended:  Howardite    [explanation]

This is 1 of 386 approved meteorites classified as Howardite.   [show all]
Search for other: Achondrites, HED achondrites, and Howardites
Comments: Approved 27 Jul 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7537 (NWA 7537)

Northwest Africa

Purchased: 2012 May

Classification: HED achondrite (Howardite)

Petrography (K. Metzler, IfP): Polymict breccia consisting of mineral fragments and a few lithic clasts set in a fine-grained clastic matrix. Mineral fragments include various eucritic pyroxenes (some with augite exsolution lamellae), diogenitic pyroxenes, feldspar, silica, chromite, ilmenite, troilite, and Ni-poor metal. One olivine fragment found. Lithic clasts include ophitic, subophitic, and fan-spherulitic eucrites, diogenites and small melt rock clasts. The metal is well-preserved. About 50 vol% diogenitic components. An88.0±5.7 (n=22)

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2012 May
Mass (g):76
Pieces:1
Class:Howardite
Weathering grade:W1
Fayalite (mol%):64.4 (n=1)
Ferrosilite (mol%):20.8±3.9 (n=20); 43.8±10.3 (n=15)
Wollastonite (mol%):2.3±0.8; 13.5±12.5
Classifier:K. Metzler, IfP
Type spec mass (g):16
Type spec location:IfP
Main mass:A. and H. Hmani
Comments:Submitted by K. Metzler
Institutions
   and collections
IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Hmani: A. Hmani Moroccan Imports, 13 rue Jules Hardouin Mansart, 92600 Asnières, France (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7483 approved meteorites from (Northwest Africa) (plus 1994 unapproved names)

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