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Northwest Africa 7654
Basic information Name: Northwest Africa 7654
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7654
Observed fall: No
Year found: 2012
Country: Morocco
Mass:help 6.29 kg
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L5
Recommended:  L5    [explanation]

This is 1 of 6696 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 15 Jan 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7654 (NWA 7654)

Morocco

Purchased: Aug 2012

Classification: Ordinary chondrite (L5)

History: Purchased by Adam Bates from a meteorite dealer in Morocco, August 2012.

Physical characteristics: Single stone, dark weathered fusion crust, saw-cut reveals many densely packed chondrules of variable size, fine-grained metal/sulfides, but some up to 1mm.

Petrography: C. Agee, UNM) Microprobe examination of a polished mount shows numerous chondrules, ubiquitous taenite, troilite, mesostasis, and fine-grained plagioclase.

Geochemistry: (C. Agee and M. Spilde, UNM) Olivine Fa22.8±0.6, Fe/Mn=46±3, n=30; low-Ca pyroxene Fs20.5±1.3Wo1.6±2.2, Fe/Mn=31±3, n=30.

Classification: Ordinary chondrite (L5) weathering grade W1.

Specimens: 22 g including a probe mount on deposit at UNM, Adam Bates holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P Aug 2012
Mass (g):6288
Pieces:1
Class:L5
Weathering grade:W1
Fayalite (mol%):22.8±0.6
Ferrosilite (mol%):20.5±1.3
Wollastonite (mol%):1.6±2.2
Classifier:C. Agee, UNM
Type spec mass (g):22
Type spec location:UNM
Main mass:Adam Bates
Comments:Submitted by C. Agee
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1466 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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