Meteoritical Bulletin: Entry for Northwest Africa 12412

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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: 346 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	Martian (shergottite)
Recommended:			Martian (shergottite) [explanation]

This is 1 of 298 approved meteorites (plus 2 unapproved names) classified as Martian (shergottite). [show all]
Search for other: Martian meteorites

Comments:

Approved 2 Feb 2019

Writeup

help

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: Ophitic to sub-ophitic texture. Contains zoned (normal) high-Ca pyroxene, plagioclase (maskelynite), ilmenite, pyrrhotite, magnetite. Pyroxene average grain size is 500 μm.

Geochemistry: Pyroxenes Fs_35.5-48.5Wo_10.3-30.0, average Fs_43.6±4.3Wo_15.1±6.8FeO/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 10 Jun 2023)
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 (2020) Meteorit. Planet. Sci. 55, 1146-1150

Find references in NASA ADS:
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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9305 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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