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Northwest Africa 13189
Basic information Name: Northwest Africa 13189
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13189
Observed fall: No
Year found: 2017
Country: Morocco
Mass:help 132 g
Classification
  history:
Recommended:  Mesosiderite    [explanation]

This is 1 of 194 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 3 Mar 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13189 (NWA 13189)

Morocco

Purchased: 2017 Mar

Classification: Mesosiderite

Physical characteristics: Brown irregular fragments.

Petrography: (J. Gattacceca, CEREGE) This rock is composed of approximately 70 vol% silicates and 30 vol% metal (and associated terrestrial weathering products). The silicate fraction is composed mostly of pyroxene and plagioclase, with minor silica polymorph. Metal is found mostly as grains with smooth shapes and typical size 1 mm. Most metal is replaced by terrestrial weatheirng products. Metal and troilite are also found as µm size grains within silicates. Abundant veins filled with weathering products.

Geochemistry: Pyroxene Fs36.8±1.7Wo7.1±3.0, FeO/MnO=27.2±1.8 (n=3). Plagioclase An91.2±1.5Ab8.7±1.5Or0.1±0.1 (n=4). Chromite Cr# 0.78.

Classification: Mesosiderite

Specimens: Type specimen at CEREGE, main mass with Lucian Cojocaru

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Verona, italy
Date:P 2017 Mar
Mass (g):132
Pieces:17
Class:Mesosiderite
Weathering grade:strong
Ferrosilite (mol%):36.8±1.7 (n=3)
Wollastonite (mol%):7.1±3.0
Magnetic suscept.:5.48
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):26.8
Type spec location:CEREGE
Main mass:Lucian Cojocaru
Comments:workn name LC07; submitted by Jérôme Gattacceca
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
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Geography:

Morocco
Coordinates:Unknown.

Statistics:
     This is 1 of 1460 approved meteorites from Morocco (plus 21 unapproved names) (plus 1 impact crater)

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