Meteoritical Bulletin: Entry for Northwest Africa 10200

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Northwest Africa 10200

Basic information

Name: Northwest Africa 10200
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10200
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 45.2 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	L3
Recommended:			L3 [explanation]

This is 1 of 848 approved meteorites (plus 2 unapproved names) classified as L3. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 4 Oct 2015

Writeup

help

Writeup from MB 104:

Northwest Africa 10200 (NWA 10200)

(Northwest Africa)

Purchased: 2014 Sep

Classification: Ordinary chondrite (L3)

History: Purchased by John Curchin in September 2014 from a Moroccan dealer at the Denver Show.

Petrography: (A. Irving and S. Kuehner, UWS) Highly unequilibrated specimen composed of closely packed, well formed, spherical chondrules (up to 2.4 mm) set within a sparse black matrix. Minerals are olivine, orthopyroxene, chromite, kamacite and troilite. Chondrules contain alkali- and Si-rich glass containing variable amounts of Ca and Fe.

Geochemistry: Olivine (Fa_0.4-73.1; Cr₂O₃ in ferroan examples = 0.07-0.79 wt.%, mean 0.25±0.30 wt.%, N = 15), orthopyroxene (Fs_1.2-23.5Wo_0.3-1.6, N = 3).

Classification: Ordinary chondrite L3 (group based on magnetic susceptibility); estimated subtype 3.0-3.2 based on ranges, mean values and standard deviations of Fa and Cr₂O₃ content of ferroan olivines.

Specimens: 10.2 g including one polished thin section at UWB; the remainder is held by Mr. J. Curchin.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Denver
Date:	P 2014 Sep
Mass (g):	45.2
Pieces:	1
Class:	L3
Shock stage:	S2
Weathering grade:	W0/1
Fayalite (mol%):	0.4-73.1
Ferrosilite (mol%):	1.2-23.5
Wollastonite (mol%):	0.3-1.6
Magnetic suscept.:	4.75
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	10.2
Type spec location:	UWB
Main mass:	J. Curchin
Comments:	JC15-6; submitted by A. Irving

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)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)

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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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)

Also see:

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Revision
history:

This lists important revisions made to data for this record.

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