Meteoritical Bulletin: Entry for Northwest Africa 10242

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Northwest Africa 10242

Basic information

Name: Northwest Africa 10242
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10242
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 41.5 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	Diogenite
Recommended:			Diogenite [explanation]

This is 1 of 511 approved meteorites classified as Diogenite. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Comments:

Approved 24 Aug 2015

Writeup

Writeup from MB 104:

Northwest Africa 10242 (NWA 10242)

(Northwest Africa)

Purchased: 2015 Jan

Classification: HED achondrite (Diogenite)

History: The two stones were bought in January 2015 by Jean Redelsperger in Agadir

Physical characteristics: Two irregular dark-gray fragments without fusion crust. Cut surface reveals a dark interior with lighter clasts.

Petrography: Coarse brecciated igneous rock with grain size to 2 mm. Main mineral is pyroxene with fine scale augite exsolution. The rock also contains plagioclase, chromite, ilmenite, a silica polymorph, troilite, metal (to 300 μm).

Geochemistry: Orthopyroxene Fs_27.9Wo_2.7(N=1). Augite Fs_35.0±0.8Wo_34.2±2.9(N=4). FeO/MnO=32.1±2.6 (N=5). Plagioclase An_92.5Ab_7.2Or_0.3(N=2)

Classification: Diogenite

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Agadir, Morocco
Date:	P 2015 Jan
Mass (g):	41.5
Pieces:	2
Class:	Diogenite
Weathering grade:	moderate
Ferrosilite (mol%):	27.9 ; 35.0
Wollastonite (mol%):	2.7 ; 34.2
Magnetic suscept.:	3.53
Classifier:	J. Gattacceca, H. Pourkhorsandi, CEREGE
Type spec mass (g):	10.1
Type spec location:	CEREGE
Main mass:	Jean Redelsperger
Comments:	Submitted by J. 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. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full

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Photos:

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

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9111 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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