Meteoritical Bulletin: Entry for Northwest Africa 10162

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Northwest Africa 10162

Basic information

Name: Northwest Africa 10162
This is an OFFICIAL meteorite name.
Abbreviation: NWA 10162
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 84 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	CV3
Recommended:			CV3 [explanation]

This is 1 of 565 approved meteorites (plus 1 unapproved name) classified as CV3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 11 Jun 2015

Writeup

help

Writeup from MB 104:

Northwest Africa 10162 (NWA 10162)

(Northwest Africa)

Purchased: 2014 May 8

Classification: Carbonaceous chondrite (CV3)

History: Purchased in Erfoud, May 8, 2014.

Physical characteristics: A single dark stone partially covered with fusion crust. Chondrules and CAIs are visible on the cut surface.

Petrography: Chondrules (mostly type I) and CAIs set in a fine-grained Fe-rich foliated matrix. Matrix:chondrule ratio (by point counting, N=298) is 41:59. Average chondrule apparent size 750±410 μm (N=35). Sulfide/magnetite assemblages are abundant in the matrix as μm-sized grains, and around and inside chondrules as blebs up to 100 μm. No metal was observed.

Geochemistry: Olivine Fa_2.7±2.3(Fa_0.6-9.0, median Fa_2.3, N=21), orthopyroxene Fs_1.3±0.2Wo_1.5±0.9(N=5). Magnetite contains 1.6 wt% Cr₂O₃. Magnetic susceptibility log χ = 4.30 (χ in 10^-9 m³/kg).

Classification: CV3, oxidized subgroup.

Specimens: 7 g at CEREGE. Main mass with P. Thomas.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Erfoud
Date:	P 2014 May 8
Mass (g):	84
Pieces:	1
Class:	CV3
Weathering grade:	minor
Fayalite (mol%):	2.7±2.3 (N=21)
Ferrosilite (mol%):	1.3±0.2 (N=7)
Wollastonite (mol%):	1.5±0.9
Magnetic suscept.:	4.30
Classifier:	J. Gattacceca, CEREGE
Type spec mass (g):	19
Type spec location:	CEREGE
Main mass:	P. Thomas
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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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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