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Northwest Africa 12914
Basic information Name: Northwest Africa 12914
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12914
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 35.6 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  L6
Recommended:  L6    [explanation]

This is 1 of 11485 approved meteorites (plus 6 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 26 Sep 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12914 (NWA 12914)

(Northwest Africa)

Purchased: 22 Jan 2017

Classification: Ordinary chondrite (L6)

History: BBaecker purchased an NWA meteorite on Ebay on January 22, 2017, and donated pieces to Cascadia two weeks later.

Physical characteristics: Cascadia received two somewhat crumbly pieces lacking fusion crust. Samples are light gray with metal/sulfide bumps protruding from the silicates, with rust patches near opaques. One end of one piece is heavily weathered, and represents the stone’s exterior.

Petrography: (M. Hutson, A. Ruzicka, R. Kostynick, Cascadia): The texture of the silicates in thin section is well-integrated; indistinct chondrules are barely visible. Plagioclase feldspar grains up to 120 microns across are present. Almost all of the metal in the section is concentrated in one long roughly ovoid patch (~1.3 × 0.7 mm). Abundant sulfide grains in section are all smaller (<= 0.6 mm) than the metal grain.

Geochemistry: Mineral compositions and geochemistry: Olivine and pyroxene grains are equilibrated: Fa25.2±0.6, N=11; Fs21.0±0.1Wo1.5±0.3, N=12.

Classification: Ordinary chondrite (L6) based on chemistry and texture.

Specimens: Cascadia holds 12.2 g in multiple fragments, in addition to a polished thin section. The main mass is held by BBaecker: Bastien Baecker, Huntsville, AL.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Ebay
Date:P 22 Jan 2017
Mass (g):35.6
Pieces:1
Class:L6
Weathering grade:W1
Fayalite (mol%):25.2±0.6 (N=11)
Ferrosilite (mol%):21.0±0.1 (N=12)
Wollastonite (mol%):1.5±0.3 (N=12)
Classifier:M. Hutson and R. Kostynick, Cascadia
Type spec mass (g):12.2
Type spec location:Cascadia
Main mass:BBaecker
Comments:Lab number CML 0944; submitted by Melinda Hutson
Institutions
   and collections
Cascadia: Cascadia Meteorite Laboratory, Portland State University, Department of Geology, Room 17 Cramer Hall, 1721 SW Broadway, Portland, OR 97201, United States; Website (institutional address; updated 28 Oct 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7579 approved meteorites from (Northwest Africa) (plus 1969 unapproved names)

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