Meteoritical Bulletin: Entry for Northwest Africa 8000

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Northwest Africa 8000

Basic information

Name: Northwest Africa 8000
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8000
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass: 23 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	Diogenite
Recommended:			Diogenite [explanation]

This is 1 of 522 approved meteorites classified as Diogenite. [show all]
Search for other: Achondrites, Diogenites, and HED achondrites

Comments:

Approved 14 Nov 2013

Writeup

Writeup from MB 102:

Northwest Africa 8000 (NWA 8000)

(Northwest Africa)

Purchased: 2013 Jun

Classification: HED achondrite (Diogenite)

History: Purchased by Stefan Ralew in June 2013 from a dealer in Agadir, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Relatively coarse grained, equigranular assemblage of predominantly orthopyroxene plus ~10 vol.% calcic plagioclase with accessory clinopyroxene, chromite and troilite.

Geochemistry: Orthopyroxene (Fs_34.1-34.2Wo_2.4-2.5, FeO/MnO = 28-31), plagioclase (An_88.1-89.0Or_0.5-0.2), clinopyroxene (Fs_13.6-13.8Wo_43.3-43.4, FeO/MnO = 25-26).

Classification: Diogenite (noritic). Like NWA 6928, this is a rare example of a noritic lithology related to diogenites.

Specimens: 4.76 g and one polished thin section are at UWB. The remainder is held by Mr. S. Ralew.

Data from:
  MB102
  Table 0
  Line 0:

Place of purchase:	Agadir
Date:	P 2013 Jun
Mass (g):	23
Pieces:	1
Class:	Diogenite
Shock stage:	low
Weathering grade:	low
Ferrosilite (mol%):	34.1-34.2
Wollastonite (mol%):	2.4-2.5
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	4.76
Type spec location:	UWB
Main mass:	S. Ralew
Comments:	Rudi13-2; submitted by A. Irving

Institutions
and collections

UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Burke Museum of Natural History and Culture, Box 353010 Seattle, WA 98195, United States (institutional address; updated 9 Oct 2023)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015

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Geography:

Coordinates:

Unknown.

Statistics:
This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

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Revision
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