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Northwest Africa 7501
Basic information Name: Northwest Africa 7501
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7501
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 716 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  Eucrite-mmict
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 238 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 3 Jun 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7501 (NWA 7501)

(Northwest Africa)

Purchased: 2012 Sep

Classification: HED achondrite (Eucrite, monomict)

History: Purchased by GHupé in September 2012 from a dealer in Zagora, Morocco.

Physical characteristics: Two medium-grained, grayish stones weighing 265.5 g and 450 g.

Petrography: (A. Irving and S. Kuehner, UWS) Fresh unbrecciated, medium-grained specimen (but with finer-grained domains) composed of low-Ca pyroxene (with clinopyroxene exsolution lamellae), clinopyroxene (with orthopyroxene exsolution lamellae), calcic plagioclase, silica polymorph, ilmenite (with sparse tiny inclusions of baddeleyite) and minor stained metal.

Geochemistry: Orthopyroxene (Fs61.7-62.3Wo4.8-4.7; FeO/MnO = 30-31), clinopyroxene (Fs31.7-32.6Wo41.0-40.4; FeO/MnO = 34-35).

Classification: Eucrite (diabasic to gabbroic)

Specimens: 20.5 g of sample and one polished thin section are on deposit at UWB. GHupé holds the main masses.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2012 Sep
Mass (g):715.5
Pieces:2
Class:Eucrite-mmict
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):61.7-62.3; 31.7-32.6
Wollastonite (mol%):4.8-4.7; 41.0-40.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.5
Type spec location:UWB
Main mass:GHupé
Comments:GH-442; 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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (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 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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