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Northwest Africa 7163
Basic information Name: Northwest Africa 7163
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7163
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 91 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  LL3
Recommended:  LL3    [explanation]

This is 1 of 316 approved meteorites classified as LL3.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 2 Feb 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 7163 (NWA 7163)

(Northwest Africa)

Purchased: 2011

Classification: Ordinary chondrite (LL3)

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

Petrography: (A. Irving and S. Kuehner, UWS) Closely-packed, well-formed chondrules (1.5±0.6 mm) in a finer matrix.

Geochemistry: Olivine (Fa7.4-56.7, Cr2O3 in ferroan olivine 0.09-0.30 wt.%, mean 0.13±0.07 wt.%, N = 9), orthopyroxene (Fs0.3-16.9Wo0.9-1.3, N = 3), pigeonite (Fs21.5Wo16.4), augite (Fs14.9Wo39.1).

Classification: Ordinary chondrite (LL3).

Specimens: 18.9 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):91
Pieces:1
Class:LL3
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):7.4-56.7 (N = 9)
Ferrosilite (mol%):0.3-16.9
Wollastonite (mol%):0.9-1.3
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):18.9
Type spec location:PSF
Main mass:M. Cimala
Comments:MC 087; 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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

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

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