Meteoritical Bulletin: Entry for Northwest Africa 10308

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Northwest Africa 10308

Basic information

Name: Northwest Africa 10308
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10308
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass: 29.3 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	CO3
Recommended:			CO3 [explanation]

This is 1 of 645 approved meteorites (plus 1 unapproved name) classified as CO3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites

Comments:

Approved 22 Oct 2015

Writeup

Writeup from MB 104:

Northwest Africa 10308 (NWA 10308)

(Northwest Africa)

Purchased: 2015 May

Classification: Carbonaceous chondrite (CO3)

History: Purchased by Fabien Kuntz in May 2015 from a dealer in Erfoud, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Small chondrules (apparent diameter up to 0.9 mm), angular mineral fragments and small CAI are set in a red-brown matrix (~40 vol.%).

Geochemistry: Olivine (Fa_0.4-52.9, Cr₂O₃ in ferroan examples 0.02-0.10 wt.%, N = 6), orthopyroxene (Fs_0.7-8.8Wo_3.3-2.2, N = 3), augite (Fs_0.9Wo_37.1; Fs_1.4Wo_49.1; N = 2).

Classification: Carbonaceous chondrite (CO3).

Specimens: 6.12 g including one polished thin section at PSF; remainder with Kuntz.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2015 May
Mass (g):	29.3
Pieces:	1
Class:	CO3
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	0.4-52.9
Ferrosilite (mol%):	0.7-8.8
Wollastonite (mol%):	3.3-2.2
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	6.12
Type spec location:	PSF
Main mass:	Kuntz
Comments:	K256; submitted by A. Irving

Institutions
and collections

PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
Kuntz: Fabien Kuntz, France; Website (private address)

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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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