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Northwest Africa 7814
Basic information Name: Northwest Africa 7814
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7814
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 916 g
Meteoritical Bulletin:  MB 103  (2014)  LL3
Recommended:  LL3    [explanation]

This is 1 of 343 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 8 Nov 2014
Writeup from MB 103:

Northwest Africa 7814 (NWA 7814)

(Northwest Africa)

Purchased: 2013 Feb

Classification: Ordinary chondrite (LL3)

History: Purchased by M. Cimała from a Moroccan dealer in February 2013.

Petrography: (A. Irving and S. Kuehner, UWS) Closely packed, mostly medium-sized (some larger) and well-formed chondrules (0.7-2.8 mm, mean diameter 1.7 mm). Minerals are olivine, orthopyroxene, subcalcic augite, augite, sodic plagioclase, troilite, chromite and altered kamacite.

Geochemistry: Olivine (Fa0.6-51.8; Cr2O3 in ferroan olivine = 0.05-0.13 wt.%, mean 0.08 wt.%, s.d. = 0.03 wt.%, N = 8), orthopyroxene (Fs0.7-21.3Wo0.5-0.8, N = 3), subcalcic augite (Fs20.1Wo26.7), augite (Fs13.8Wo37.8).

Classification: Ordinary chondrite (LL3).

Specimens: A total of 20.1 g of material and one polished thin section are on deposit at UWB. M. Cimała holds the main mass.

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2013 Feb
Mass (g):916
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):0.6-51.8
Ferrosilite (mol%):0.7-21.3
Wollastonite (mol%):0.5-0.8
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.1
Type spec location:UWB
Main mass:M. Cimala
Comments:MC110; submitted by A. Irving
   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)
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
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     This is 1 of 7354 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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