Meteoritical Bulletin: Entry for Northwest Africa 12481

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Northwest Africa 12481

Basic information

Name: Northwest Africa 12481
This is an OFFICIAL meteorite name.
Abbreviation: NWA 12481
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass: 61.3 g

Classification
history:

Meteoritical Bulletin:	MB 108	(2020)	Eucrite-melt breccia
Recommended:			Eucrite-melt breccia [explanation]

This is 1 of 115 approved meteorites classified as Eucrite-melt breccia. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites

Comments:

Approved 27 Mar 2019

Writeup

Writeup from MB 108:

Northwest Africa 12481 (NWA 12481)

(Northwest Africa)

Purchased: 2018 March

Classification: HED achondrite (Eucrite, melt breccia)

Petrography: Brecciated igneous rock with lithic and mineral clasts set in a melt rock matrix. Main minerals are pyroxene (both exsolved and not exsolved) and plagioclase. Accessory silica polymorph (to 100 µm), troilite, FeNi metal.

Geochemistry: Pyroxene: low-Ca Fs_57.4±2.0Wo_4.7±2.5(n=4), augite Fs_27.1±0.8Wo_42.8±0.8(n=3), FeO/MnO=32.4±3.3 (n=7). Plagioclase An_89.8Ab₉₇Or_0.5(n=2).

Classification: Eucrite-melt breccia.

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

Data from:
  MB108
  Table 0
  Line 0:

Place of purchase:	Zagora, Morocco
Date:	P 2018 March
Mass (g):	61.3
Pieces:	1
Class:	Eucrite-melt breccia
Weathering grade:	high
Ferrosilite (mol%):	57.4±2.0 (n=4)
Wollastonite (mol%):	4.7±2.5
Magnetic suscept.:	2.89
Classifier:	J. Gattacceca, L. Krämer Ruggiu, CEREGE
Type spec mass (g):	12.69
Type spec location:	CEREGE
Main mass:	Kuntz
Comments:	work name K377; 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 10 Jun 2023)
Kuntz: Fabien Kuntz, France; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 108 (2020) Meteorit. Planet. Sci. 55, 1146-1150

Find references in NASA ADS:
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Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Ryan Upchurch

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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