Meteoritical Bulletin: Entry for Northwest Africa 6292

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Northwest Africa 6292

Basic information

Name: Northwest Africa 6292
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6292
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass: 725 g

Classification
history:

Meteoritical Bulletin:	MB 100	(2012)	Achondrite-ung
Recommended:			Achondrite-ung [explanation]

This is 1 of 138 approved meteorites classified as Achondrite-ung. [show all]
Search for other: Achondrites, Ungrouped achondrites

Comments:

Approved 28 Aug 2011

Writeup

help

Writeup from MB 100:

Northwest Africa 6292 (NWA 6292)

(Northwest Africa)

Found: 2010

Classification: Ungrouped achondrite

History: Purchased in June 2010 by Marc Jost from a Moroccan dealer

Physical characteristics: A single brownish, dense 725 g stone

Petrography: (A. Irving and S. Kuehner, UWS) Protogranular texture. Aggregate of predominantly olivine with subordinate orthopyroxene, clinopyroxene, chlorapatite, chromite, partly altered kamacite and troilite.

Geochemistry: Olivine (Fa_30.2-30.3; FeO/MnO = 51.7-53.5), orthopyroxene (Fs_24.1-24.3Wo_1.9-2.0; FeO/MnO = 36.9-41.1), clinopyroxene (Fs_9.4Wo_44.1; FeO/MnO = 27.9; Al₂O₃ = 0.75 wt.%; Cr₂O₃ = 0.91 wt.%). Oxygen isotopes (D. Rumble, CIW): δ¹⁷O 2.42; δ¹⁸O 4.55; Δ¹⁷O +0.031 per mil

Classification: Achondrite (ungrouped, brachinite-like). This specimen has the same mineralogy and oxygen isotopic composition as NWA 5400, and is paired with it.

Specimens: A total of 21 g and one polished thin section are on deposit at UWS. The main mass is held by Marc Jost.

Data from:
  MB100
  Table 1
  Line 1331:

Origin or pseudonym:	Northwest Africa
Place of purchase:	Marrakech
Date:	P 2010 Apr 19
Mass (g):	725
Pieces:	1
Class:	Achondrite-ung
Weathering grade:	moderate
Fayalite (mol%):	30.2-30.3
Ferrosilite (mol%):	24.1-24.3; 9.4
Wollastonite (mol%):	1.9-2.0; 44.1
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	20
Type spec location:	UWS
Main mass:	M. Jost
Comments:	d17O 2.42; d18O 4.55; D17O 0.031; paired with NWA 5400; SJS 10012; submitted by A. Irving

Plots:

O isotopes:

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
CIW: Carnegie Insitution Washington, Geophysical Laboratory, 5251 Broad Branch Rd., NW, Washington DC 20015, United States (institutional address)
SJS: Space Jewels Switzerland, 2555 Brügg, Switzerland (private address; updated 3 Jan 2010)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)

Find references in NASA ADS:
Find references in Google Scholar:

Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
Sergey Vasiliev
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Gregor H.

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9344 approved meteorites from (Northwest Africa) (plus 1872 unapproved names)

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