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Northwest Africa 12337
Basic information Name: Northwest Africa 12337
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12337
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 1269 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  LL5
Recommended:  LL5    [explanation]

This is 1 of 3162 approved meteorites (plus 1 unapproved name) classified as LL5.   [show all]
Search for other: LL chondrites, LL chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 27 Nov 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12337 (NWA 12337)

(Northwest Africa)

Purchased: 2015 Apr

Classification: Ordinary chondrite (LL5)

Petrography: (Z.G. Guo, UWO) This meteorite comprises 60-70% chondrules with mean diameter of 800 μm. Undulatory extinction is present in olivine. There is ~10% metal found within thin section.

Geochemistry: (EMPA, Z.G. Guo and M. Beauchamp, UWO) Olivine Fa28.2±0.4, Fe/Mn=53.9±2.5 (N=15), high-Ca pyroxene Fs8.5±0.8Wo43.6±3.0; Fe/Mn=22.5±2.9 (N=3); low-Ca pyroxene Fs23.1±0.4Wo1.3±0.1, Fe/Mn=31.0±0.9 (N=15); plagioclase An12.6±0.5 (N=12).

Classification: Ordinary chondrite (LL5, S2)

Specimens: 42.7 g at UWO including a probe mount

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015 Apr
Mass (g):1269
Pieces:1
Class:LL5
Shock stage:S2
Weathering grade:low
Fayalite (mol%):28.2±0.4 (N=15)
Ferrosilite (mol%):23.1±0.4 (N=15)
Wollastonite (mol%):1.3±0.1
Classifier:Z.G. Guo, UWO
Type spec mass (g):42.7
Type spec location:UWO
Main mass:S. Tutorow
Comments:G671; submitted by A. Bouvier
Institutions
   and collections
UWO: University of Western Ontario, Department of Earth Sciences, BGS 1026, 1151 Richmond St. N, London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 18 Jul 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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