Meteoritical Bulletin: Entry for Northwest Africa 7937

header

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 15 Apr 2024
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Northwest Africa 7937

Basic information

Name: Northwest Africa 7937
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7937
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass: 152.9 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	Martian (shergottite)
Recommended:			Martian (shergottite) [explanation]

This is 1 of 321 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Search for other: Martian meteorites

Comments:

Approved 30 Nov 2013

Writeup

help

Writeup from MB 102:

Northwest Africa 7937 (NWA 7937)

(Northwest Africa)

Purchased: 2013

Classification: Martian meteorite (Shergottite)

History: Purchased by Ali and Mohammed Hmani in 2013 in Guelmim, Morocco.

Physical characteristics: Several small stones lacking fusion crust (total 152.9 g).

Petrography: (A. Irving and S. Kuehner, UWS) Relatively fresh specimen with poikilitic to subequigranular texture consisting of zoned clinopyroxene, in places enclosing chadacrysts of olivine, along with intermediate plagioclase (completely converted to maskelynite), Cr-rich chromite, Ti-rich chromite, ilmenite, Ni-bearing pyrrhotite, merrillite and minor chlorapatite.

Geochemistry: Olivine (Fa_36.7-39.4; FeO/MnO = 46-51), pigeonite (Fs_27.7-29.7Wo_16.3-10.0; FeO/MnO = 26-31), subcalcic augite (Fs_19.7Wo_26.9; FeO/MnO = 27).

Classification: Martian (shergottite, poikilitic). This specimen is very likely paired with NWA 7397, NWA 7387 and NWA 7755.

Specimens: 21.1 g and one polished thin section are at UWB. The remainder is held by Hmani.

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Guelmim
Date:	P 2013
Mass (g):	152.9
Pieces:	several
Class:	Martian (shergottite)
Shock stage:	moderate
Weathering grade:	low
Fayalite (mol%):	36.7-39.4
Ferrosilite (mol%):	27.7-29.7; 19.7
Wollastonite (mol%):	16.3-10.0; 26.9
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21.1
Type spec location:	UWB
Main mass:	Hmani Inc.
Comments:	OT07; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
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:
Find references in Google Scholar:

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Crosslinks:

This lists all records that are linked to this record and to each other.

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

Direct link to this page