Meteoritical Bulletin: Entry for Northwest Africa 8481

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Northwest Africa 8481

Basic information

Name: Northwest Africa 8481
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8481
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass: 181.1 g

Classification
history:

Meteoritical Bulletin:	MB 103	(2014)	CV3
Recommended:			CV3 [explanation]

This is 1 of 470 approved meteorites (plus 2 unapproved names) classified as CV3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 26 Jul 2014

Writeup

Writeup from MB 103:

Northwest Africa 8481 (NWA 8481)

(Northwest Africa)

Purchased: 2013 June 7

Classification: Carbonaceous chondrite (CV3)

History: Purchased in Erfoud, June 2013

Physical characteristics: A single oriented stone in three fragments. Cut surfaces reveals abundant grayish chondrules up to 2 mm, set in a brownish matrix.

Petrography: (C. Cournède and J. Gattacceca, CEREGE) Chondrules and CAIs set in a fine-grained matrix. Chondrule:matrix ratio is about 1:1. Chondrule mean apparent size 0.61±0.4 mm (N=28). Presence of magnetite (120 μm), sufides (120 μm) and metal (80 μm)

Geochemistry: Olivine Fa_15.9±15.2(PMD=85%, n=17, range 0.6-43.6). Orthopyroxene Fs_8.3±8.2Wo_1.6±0.8(PMD=97%, n=10, range Fs_0.9-19.5) . Magnetic susceptibility log χ = 3.82 (χ in 10^-9 m³/kg).

Classification: Carbonaceous chondrite (CV3). Strong weathering

Specimens: 22.8 g and a polished section in CEREGE. Main mass with P. Thomas

Data from:
  MB103
  Table 0
  Line 0:

Place of purchase:	Erfoud, Morocco
Date:	P 2013 June 7
Mass (g):	181.1
Pieces:	3
Class:	CV3
Weathering grade:	high
Fayalite (mol%):	15.9±15.2 (PMD=85%, N=17)
Ferrosilite (mol%):	8.3±8.2 (PMD=97%, N=10)
Wollastonite (mol%):	1.6±0.8
Magnetic suscept.:	3.82
Classifier:	C. Cournède and J. Gattacceca, CEREGE
Type spec mass (g):	22.8
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 10 Jun 2023)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full

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Geography:

Coordinates:

Unknown.

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

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Revision
history:

This lists important revisions made to data for this record.

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