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Northwest Africa 12391
Basic information Name: Northwest Africa 12391
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12391
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 51.4 g
Classification
  history:
Meteoritical Bulletin:  MB 108  (2020)  L5
Recommended:  L5    [explanation]

This is 1 of 8890 approved meteorites (plus 5 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 11 Jan 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12391 (NWA 12391)

(Northwest Africa)

Find: 2016

Classification: Ordinary chondrite (L5)

History: The specimen was bought from Zs. Kereszty.

Physical characteristics: A single brown stone (51.4 g) without fusion crust.

Petrography: (D. Rezes and A. Kereszturi, CSFK) The stone is composed of a light-gray lithology with orange-brown limonitic patches around the troilite, FeNi metal and opaque veins. It has typical chondritic texture. The average chondrule diameter is 0.7 mm. Olivine shows planar fractures. Olivine-mosaicism is not observable. Accessory minerals are chromite, Cl-apatite and whitlockite. There are black-colored thin shock veins in the lithology.

Geochemistry: (D. Rezes, A. Kereszturi and M. Szabo, CSFK) Mineral chemistry: Olivine Fa22.5±0.7, N=18; Orthopyroxene Fs19.0±0.84Wo1.5±0.3, N=10; Feldspar Ab82.76,N=6

Classification: Ordinary chondrite (L5), shock stage S3, weathering W3

Specimens: 5 g on deposit at CSFK, D. Rezes holds the main mass.

Data from:
  MB108
  Table 0
  Line 0:
Date:2016
Mass (g):51.4
Pieces:1
Class:L5
Shock stage:S3
Weathering grade:W3
Fayalite (mol%):22.5±0.7 (N=18)
Ferrosilite (mol%):19.0±0.8 (N=10)
Wollastonite (mol%):1.5±0.3 (N=10)
Classifier:D. Rezes, CSFK
Type spec mass (g):12.5
Type spec location:CSFK
Main mass:D. Rezes
Comments:ZKNWAx1; submitted by Akos Kereszturi
Institutions
   and collections		 CSFK: Research Center for Astronomy and Earth Sciences, H-1121 Budapest, Konkoly Thege Miklós út 15-17.l Hungary, Hungary (institutional address; updated 7 Apr 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
  This lists the most popular meteorites among people who looked up this meteorite.
Revision
  history:
  This lists important revisions made to data for this record.

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