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Northwest Africa 13703
Basic information Name: Northwest Africa 13703
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13703
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 21 g
Classification
  history:
Recommended:  Aubrite    [explanation]

This is 1 of 70 approved meteorites classified as Aubrite.   [show all]
Search for other: Achondrites, Aubrites, Enstatite achondrites, and Enstatite-rich meteorites
Comments: Approved 23 May 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13703 (NWA 13703)

(Northwest Africa)

Find: 2018

Classification: Enstatite achondrite (Aubrite)

History: Found by a nomad in the Sahara. Purchased in Morocco.

Physical characteristics: Pale brown stone without fusion crust

Petrography: (J. Gattacceca, CEREGE) Highly recrystallized rock with triple junctions. Main minerals are enstatite and plagioclase. Opaque minerals are metal (mostly weathered), troilite, schreibersite. No relict chondrules were observed in the studied section.

Geochemistry: Enstatite Fs0.6±0.2Wo1.4±0.1 (n=3). Plagioclase An14.6Ab80.9Or4.6 (n=1). Kamacite Ni = 6.7 wt%, Si = 1.62 (n=3). Troilite Cr = 0.86 wt%.

Classification: Enstatite achondrite (aubrite). Classification based on mineral chemistry, mineralogy and absence of relict chondrules.

Specimens: Type specimen at CEREGE. Main mass with Patrick Roustand.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:2018
Mass (g):21.04
Pieces:1
Class:Aubrite
Weathering grade:high
Ferrosilite (mol%):0.6±0.2 (n=3)
Wollastonite (mol%):1.4±0.1
Magnetic suscept.:4.25
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):4.83
Type spec location:CEREGE
Main mass:Patrick Roustan
Finder:anonymous
Comments:work name CM37; 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. 110, in preparation (2021)
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Photos:
CreditPhotos
Public domain photographs:
Jerome Gattacceca   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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