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Northwest Africa 7164
Basic information Name: Northwest Africa 7164
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7164
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 12 kg
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  L5
Recommended:  L5    [explanation]

This is 1 of 6528 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 2 Feb 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 7164 (NWA 7164)

(Northwest Africa)

Purchased: 2011

Classification: Ordinary chondrite (L5)

History: Purchased by Marcin Cimala in 2011 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Sparse chondrules (1.2±0.3 mm) in a finer grained, recrystallized matrix.

Geochemistry: Olivine (Fa25.0-25.8, N = 4), orthopyroxene (Fs21.6-22.3Wo0.9-1.5, N = 3), clinopyroxene (Fs7.7-8.2Wo45.3-44.5, N = 2).

Classification: Ordinary chondrite (L5).

Specimens: 42.4 g including one polished thin section at PSF; main mass with Mr. M. Cimala.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud
Date:P 2011
Mass (g):12000
Pieces:several
Class:L5
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):25.0-25.8 (N = 4)
Ferrosilite (mol%):21.6-22.3
Wollastonite (mol%):0.9-1.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):42.4
Type spec location:PSF
Main mass:M. Cimala
Comments:MC 090; submitted by P. Sipiera
Institutions
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6900 approved meteorites from (Northwest Africa) (plus 2035 unapproved names)

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