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Northwest Africa 12970
Basic information Name: Northwest Africa 12970
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12970
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 3 kg
Meteoritical Bulletin:  MB 108  (2020)  L3
Recommended:  L3    [explanation]

This is 1 of 729 approved meteorites (plus 1 unapproved name) classified as L3.   [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 21 Nov 2019
Writeup from MB 108:

Northwest Africa 12970 (NWA 12970)

(Northwest Africa)

Purchased: 2019 May

Classification: Ordinary chondrite (L3)

History: Purchased in Agadir, Morocco by Aziz Habibi in May 2019.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed, closely-packed chondrules (apparent diameter 890±490 µm, N = 25) are set in a sparse finer-grained matrix containing stained metal.

Geochemistry: Olivine (Fa18.6±11.7 (range Fa3.0-30.3, Cr2O3 <0.05 wt.%, N = 7), low-Ca pyroxene (Fs12.0±11.8Wo1.1±0.6 (range Fs1.5-24.9Wo0.6-1.7, N = 2), high-Ca pyroxene (Fs3.6Wo38.8). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.70.

Classification: Ordinary chondrite (L3).

Specimens: 33.6 g including one polished thin section at UWB; remainder with Mr. A. Habibi.

Data from:
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2019 May
Mass (g):3000
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):18.6±11.7
Ferrosilite (mol%):12.0±11.8
Wollastonite (mol%):1.1±0.6
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):34
Type spec location:UWB
Main mass:A. Habibi
Comments:Work name AH 721; 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)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
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     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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