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Northwest Africa 13712
Basic information Name: Northwest Africa 13712
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13712
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 198.5 g
Classification
  history:
Recommended:  Diogenite    [explanation]

This is 1 of 462 approved meteorites classified as Diogenite.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 20 Mar 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13712 (NWA 13712)

(Northwest Africa)

Purchased: October 2020

Classification: HED achondrite (Diogenite)

Physical characteristics: Two fragments, one with fusion crust. Cut face reveals a light grey interior with darker mm sized clasts.

Petrography: (J. Gattacceca, CEREGE) Brecciated igneous rock with angular mineral clasts (to 4 mm) set in a clastic matrix. Main minerals are Ca-pyroxenes (some zoned, some exsolved). Other minerals: plagioclase, chromite (to 600 µm), troilite, metal (in the matrix, or as µm blebs and veins in the pyroxenes).

Geochemistry: Low-Ca pyroxene Fs27.5±4.7Wo2.6±0.9, range Fs17.4-34.8Wo0.5-4.0, FeO/MnO = 32.5±1.64 (n=13). Plagioclase An86.0±4.2Ab13.3±4.0Or0.7±0.3 (n=9). Chromite Cr# = 0.76 (n=2).

Classification: Achondrite (diogenite, brecciated)

Specimens: Type specimen at CEREGE. Main mass with Kuntz.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P Oct 2020
Mass (g):198.5
Pieces:2
Class:Diogenite
Weathering grade:low
Ferrosilite (mol%):27.5±4.7 (n=13)
Wollastonite (mol%):2.6±0.9
Magnetic suscept.:3.26
Classifier:J. Gattacceca, CEREGE
Type spec mass (g):22.17
Type spec location:CEREGE
Main mass:Kuntz
Finder:anonymous
Comments:work name K507; 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)
Kuntz: Fabien Kuntz, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7795 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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