Meteoritical Bulletin: Entry for Northwest Africa 960

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Northwest Africa 960

Basic information

Name: Northwest Africa 960
This is an OFFICIAL meteorite name.
Abbreviation: NWA 960
Observed fall: No
Year found: 2001
Country: (Northwest Africa)
Mass: 997 g

Classification
history:

Meteoritical Bulletin:	MB 91	(2007)	OC3
Recommended:			OC3 [explanation]

This is 1 of 11 approved meteorites classified as OC3. [show all]
Search for other: Ordinary chondrites, Ordinary chondrites (type 3)

Comments:

Approved 28 Mar 2007
Revised 24 Apr 2007: Revised nomenclature for classification

Writeup

help

Writeup from MB 91:

Northwest Africa 960

Morocco

Find: December 2001

Ordinary chondrite (type 3)

History: Purchased in December 2001 by A. and G. Hupé from a Moroccan dealer in Erfoud, Morocco.

Physical characteristics: A single dark brown stone weighing 997 g.

Petrography: (A. Irving and S. Kuehner, UWS; M. Zolensky, JSC) Very chondrule-rich (~80 vol%), with a brown oxidized matrix. Most chondrules (up to 3 mm in diameter, though most below 1 mm) are olivine-rich but some contain low-Ca pyroxenes. Minor magnetite, troilite, pentlandite, chromite, and glass are also present. No metal was observed.

Mineral compositions and geochemistry: Olivine (Fa_2–29; peak at Fa_2–3, average Fa_9.63), low-Ca pyroxene (Fs_2–34; peak at Fs_2–3, average Fs_10.46). Oxygen isotopes: (D. Rumble, CIW) Laser fluorination of whole rock samples (all reported as ‰); δ¹⁸O = 6.03, 6.04, 6.18; δ¹⁷O = 3.74, 3.78, 3.83; Δ¹⁷O = +0.559, +0.592, +0.567.

Classification: Ordinary chondrite (type 3); S1, W1–2. Although the Δ¹⁷O values are near those for H chondrites, the δ¹⁸O values are much higher and the mineral composition suggests this specimen is very different from H chondrites.

Type specimen: A total of 23 g of sample and one polished thin section are on deposit at UWS. G. Hupé holds the main mass.

Data from:
  MB91
  Table 2
  Line 29:

Place of purchase:	Erfoud, Morocco
Date:	2001
Mass (g):	997
Pieces:	1
Class:	OC type 3
Shock stage:	S1
Weathering grade:	W1-2
Fayalite (mol%):	2-29
Ferrosilite (mol%):	2-34
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	23
Type spec location:	UWS
Main mass:	G. Hupé

Plots:

O isotopes:

Institutions
and collections

JSC: Mailcode XI, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 28 Jul 2022)
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)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)

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

Photos:

Credit	Photos
Photos from the Encyclopedia of Meteorites:
The Hupe Collection
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
Francois Pacaud
jean bernard Delbauve
Solar Anamnesis
Woreczko Jan & Wadi

Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9914 approved meteorites from (Northwest Africa) (plus 1841 unapproved names)

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