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Northwest Africa 10158
Basic information Name: Northwest Africa 10158
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10158
Observed fall: No
Year found: 2011
Country: Algeria
Mass:help 403 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Mesosiderite
Recommended:  Mesosiderite    [explanation]

This is 1 of 240 approved meteorites classified as Mesosiderite.   [show all]
Search for other: Mesosiderites, Metal-rich meteorites
Comments: Approved 11 Jun 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 10158 (NWA 10158)

Algeria

Find: 2011

Classification: Mesosiderite

History: Found in Algeria in 2011 and purchased in Agadir, Morocco, in 2012.

Physical characteristics: Coarse-grained brownish stones. Cut surface reveals a dark-gray interior with abundant weathering veins.

Petrography: Assemblage of pyroxene (both zoned and exsolved, to 1 mm), plagioclase (to 500 μm, with silica inclusions to 20 μm), chromite (to 50 μm), silica polymorph (to 200 μm). Metal and troilite are preserved as μm-sized grains in the silicates, while larger grains are weathered. Abundant weathering veins.

Geochemistry: Olivine Fa33.9 FeO/MnO=42.0 (N=1), orthopyroxene Fs27.1±2.4 Wo1.6±1.1, FeO/MnO=28.4 (N=3), plagioclase An94.8Ab5.1Or0.1, chromite Cr#=0.81. Magnetic susceptibility log χ = 4.44 ( χ in 10-9 m3/kg).

Classification: Mesosiderite. Very strong weathering.

Specimens: 21.7 g at CEREGE. Main mass with Jean Redelsperger

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Agadir, Morocco
Date:2011
Mass (g):403
Pieces:34
Class:Mesosiderite
Weathering grade:Severe
Fayalite (mol%):33.9 (N=1)
Ferrosilite (mol%):27.1±2.4 (N=3)
Wollastonite (mol%):1.6±0.1
Magnetic suscept.:4.44
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):21.7
Type spec location:CEREGE
Main mass:Jean Redelsperger
Comments:Submitted by J. 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. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Allmeteorite.com               
Denis gourgues         
Geography:

Algeria
Coordinates:Unknown.

Statistics:
     This is 1 of 1270 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)

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