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Northwest Africa 13012
Basic information Name: Northwest Africa 13012
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13012
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 227 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  LL3-6
Recommended:  LL3-6    [explanation]

This is 1 of 29 approved meteorites classified as LL3-6.   [show all]
Search for other: LL chondrites, LL chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Comments: Approved 23 Dec 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 13012 (NWA 13012)

(Northwest Africa)

Purchased: 2019

Classification: Ordinary chondrite (LL3-6)

History: The meteorite was purchased from a meteorite dealer in Erfoud, Morocco.

Physical characteristics: Grayish rock without fusion crust.

Petrography: The meteorite is a chondritic breccia consisting of angular to subrounded LL6 clasts set into LL3 type matrix showing a chondritic texture with well defined chondrules. Chondrules are mostly flattened and well packed and have a mean diameter of about 0.9 mm. Plagioclase grain size in LL6 clasts is about 60 µm.

Geochemistry: type 3 lithology: olivine: Fa16.4±9.6 (Fa2.7-30.1, n= 17); pyroxene: Fs12.5±7.8Wo1.2±0.8 (Fs2.3-23.8Wo0.3-2.4, n= 22); type 6 lithology: olivine: Fa30.6±0.4, n=10; pyroxene: Fs25.1±0.2Wo1.5±0.1, n=9

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2019
Mass (g):227
Pieces:1
Class:LL3-6
Shock stage:S1
Weathering grade:W1
Fayalite (mol%):16.4; 30.6
Ferrosilite (mol%):12.5; 25.1
Wollastonite (mol%):1.2; 1.5
Classifier:A. Greshake, MNB
Type spec mass (g):26.1
Type spec location:MNB
Main mass:Hanno Strufe
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 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 7655 approved meteorites from (Northwest Africa) (plus 1972 unapproved names)

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