Meteoritical Bulletin: Entry for Northwest Africa 7876

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Northwest Africa 7876

Basic information

Name: Northwest Africa 7876
This is an OFFICIAL meteorite name.
Abbreviation: NWA 7876
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass: 240 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	L3.1
Recommended:			L3.1 [explanation]

This is 1 of 17 approved meteorites classified as L3.1. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Comments:

Approved 27 Jul 2013

Writeup

Writeup from MB 102:

Northwest Africa 7876 (NWA 7876)

(Northwest Africa)

Purchased: 2012 Oct

Classification: Ordinary chondrite (L3.1)

History: Purchased by F. Kuntz in October 2012 from a dealer in Zagora, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Well-formed chondrules and sparse angular olivine grains in a finer grained matrix.

Geochemistry: Olivine (Fa_0.3-57.9; Cr₂O₃ in ferroan olivine = 0.13-0.72 wt.%, mean 0.25, sd 0.17, N = 13), orthopyroxene (Fs_2.7-28.0Wo_0.5-3.6), pigeonite (Fs_13.9Wo_9.4), subcalcic augite (Fs_14.4Wo_34.1).

Classification: Ordinary chondrite (L3.15). Estimation of subtype based on the scheme of Grossman and Brearley (2005).

Specimens: Type specimen plus one polished thick section on deposit with PSF; main mass with Kuntz.

Bibliography:

Grossman J.N. and Brearley A.J. (2005) The onset of metamorphism in ordinary and carbonaceous chondrites. Meteorit. Planet. Sci. 40, 87-122. (link)

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Zagora
Date:	P 2012 Oct
Mass (g):	240
Pieces:	1
Class:	L3.1
Shock stage:	S2
Weathering grade:	W1
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	21.12
Type spec location:	PSF
Main mass:	F. Kuntz
Comments:	K 192; submitted by P. Sipiera

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. 102, MAPS 50, 1662, September 2015

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

Photos:

Credit	Photos
Photos uploaded by members of the Encyclopedia of Meteorites. (Caution, these are of unknown reliability)
John A. Shea
Piotr gural100

Geography:

Coordinates:

Unknown.

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

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