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Northwest Africa 12412
Basic information Name: Northwest Africa 12412
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12412
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 346 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 183 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 2 Feb 2019
Writeuphelp
Writeup from MB 108:

Northwest Africa 12412 (NWA 12412)

(Northwest Africa)

Purchased: 2013 Nov

Classification: Martian meteorite (Shergottite)

History: Purchased in Agadir by Vincent Jacques

Physical characteristics: A single fresh-looking stone showing dark-gray to dark-green color. Pyroxene laths are easily visible in the cut surface. Dark and shiny parts (maskelynite) are distributed between pyroxenes. Texture varies between different parts showing some dense, crystal-packed areas.

Petrography: An ophitic to sub-ophitic texture. Contains zoned (normal) high-Ca pyroxene, plagioclase (maskelynite), ilmenite, troilite, and metal. Pyroxene average grain size is 500 μm.

Geochemistry: High-Ca pyroxenes Fs35.5-48.5Wo10.3-30.0, average Fs43.6±4.3Wo15.1±6.8 FeO/MnO = 33.9±1.9 (n=6). Oxygen isotopes (R. Greenwood, OU): Δ17O= 0.248±0.003 ‰; δ18O= 5.554±0.117 ‰ (n=2); δ17O= 3.196±0.059 ‰. (La/Sm)N (ICP-MS, ULB)=1. Mg#=0.47; CaO=8.9wt% (ULB).

Classification: Martian (shergottite, diabasic)

Specimens: Type specimen (1 fragment + 1 PTS) at the RBINS meteorite collection.

Data from:
  MB108
  Table 0
  Line 0:
Place of purchase:Agadir
Date:P 2013 Nov
Mass (g):346
Pieces:1
Class:Martian (shergottite)
Weathering grade:low
Classifier:H. Pourkhorsandi and V. Debaille, ULB; J. Gattacceca, CEREGE.
Type spec mass (g):22.4
Type spec location:RBINS
Main mass:Vincent Jacques
Comments:work name ShergULB; submitted by Vinciane Debaille
Plots: O isotopes:  
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)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
RBINS: Marleen De Ceukelaire Royal Belgian Institute of Natural Sciences, rue Vautier 29 - 1000 Brussels, Belgium (institutional address; updated 15 Jul 2015)
ULB: Université libre de Bruxelles Avenue Franklin Roosevelt 50 - 1050 Bruxelles, Belgium (institutional address; updated 27 Sep 2018)
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 6631 approved meteorites from (Northwest Africa) (plus 2036 unapproved names)

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