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Northwest Africa 12518
Basic information Name: Northwest Africa 12518
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12518
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 1479 g
Classification
  history:
Recommended:  LL3    [explanation]

This is 1 of 365 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 1 Nov 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 12518 (NWA 12518)

(Northwest Africa)

Purchased: 2018 Aug

Classification: Ordinary chondrite (LL3)

History: Purchased by John Higgins in August 2018 from a dealer in Zagora, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules (apparent diameter 850±370 µm, N = 23) are set in a finer matrix containing altered metal.

Geochemistry: Olivine (Fa7.8-39.1, Cr2O3 in ferroan examples 0.03-0.32 wt.%, mean 0.14±0.10 wt.%, N = 8), orthopyroxene (Fs1.8-20.7Wo0.3-3.9, N = 3), subcalcic augite (Fs10.3-24.3Wo34.2-29.7, N = 2). Magnetic susceptibility log χ (× 10-9 m3/kg) = 3.95.

Classification: Ordinary chondrite (LL3)

Specimens: 55 g including one polished thin section at UWB; remainder with Mr. J. Higgins.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2018 Aug
Mass (g):1479
Pieces:10
Class:LL3
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):7.8-39.1 (n=8)
Ferrosilite (mol%):1.8-20.7 (n=3)
Wollastonite (mol%):0.3-3.9
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):55
Type spec location:UWB
Main mass:J. Higgins
Comments:Work name JH18-4; submitted by A. Irving
Institutions
   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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7688 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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