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Northwest Africa 12802
Basic information Name: Northwest Africa 12802
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12802
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 65.2 g
Classification
  history:
Recommended:  Mesosiderite    [explanation]

This is 1 of 188 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 18 Aug 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12802 (NWA 12802)

(Northwest Africa)

Purchased: 2017

Classification: Mesosiderite

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

Physical characteristics: Brownish fragment without fusion crust.

Petrography: The meteorite displays a light brownish interior and is composed of silicate (about 60 vol%) and metallic (about 40 vol%) portions. The metallic lithology consists of most abundant kamacite and some taenite. The silica fraction is dominated by up to 0.5 µm sized low-Ca pyroxene, less abundant olivine, calcic plagioclase, and minor silica and merrillite.

Geochemistry: olivine: Fa31.7±0.3, FeO/MnO=46±2, n=15; low-Ca pyroxene: Fs28.4±0.3Wo3.1±0.3, FeO/MnO=27±1, n=16; Ca-pyroxene: Fs12.2±0.3Wo43.0±0.2, n=10; plagioclase: An90.9±1.4Ab8.7±1.2Or0.4±0.1, n=16

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Ouarzazate, Morocco
Date:P 2017
Mass (g):65.2
Pieces:1
Class:Mesosiderite
Shock stage:S2
Weathering grade:W1
Fayalite (mol%):31.7
Ferrosilite (mol%):28.4; 12.2
Wollastonite (mol%):3.1; 43.0
Classifier:A. Greshake, MNB
Type spec mass (g):13.6
Type spec location:MNB
Main mass:Marcin Cimala
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 108, in preparation (2019)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6916 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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