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Northwest Africa 7902
Basic information Name: Northwest Africa 7902
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7902
Observed fall: No
Year found: 2013
Country: Morocco
Mass:help 2.02 kg
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  L3.7
Recommended:  L3.7    [explanation]

This is 1 of 51 approved meteorites classified as L3.7.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 19 Jun 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 7902 (NWA 7902)

Morocco

Purchased: 2013

Classification: Ordinary chondrite (L3.7)

History: Purchased by Blaine Reed in Tucson, 2013.

Physical characteristics: Single stone, weathered fusion crust, saw cut reveals densely packed chondrules of various size, one radial chondrule ~3 mm, dark-brown groundmass.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows numerous porphyritic chondrules, Fe-oxide veinlets throughout.

Geochemistry: (C. Agee and L. Burkemper, UNM) Olivine Fa23.3±5.0, range Fa1.5-32.0, Fe/Mn=52±6, n=26; low-Ca pyroxene Fs13.7±8.0Wo1.4±1.6, range Fs1.4-34.7, Fe/Mn=29±19, n=30; plagioclase An74.

Classification: Ordinary chondrite (L3.7), subtype based on sigma-Fa, subtype from sigma-Fs is ~L3.4. weathering grade W2.

Specimens: 27.7 g including a probe mount on deposit at UNM, Reed holds the main mass.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2013
Mass (g):2016.5
Pieces:1
Class:L3.7
Weathering grade:W2
Fayalite (mol%):23.3±5.0
Ferrosilite (mol%):13.7±8.0
Wollastonite (mol%):1.4±1.6
Classifier:C. Agee, UNM
Type spec mass (g):27.7
Type spec location:UNM
Main mass:Reed
Comments:Submitted by C. Agee, UNM
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)
Reed: Blaine Reed, P.O. Box 1141, Delta, CO 81416, United States; Website (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:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1481 approved meteorites from Morocco (plus 22 unapproved names) (plus 1 impact crater)

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