Meteoritical Bulletin: Entry for Northwest Africa 8315

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Northwest Africa 8315

Basic information

Name: Northwest Africa 8315
This is an OFFICIAL meteorite name.
Abbreviation: NWA 8315
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass: 88.9 g

Classification
history:

Meteoritical Bulletin:	MB 104	(2015)	CK4
Recommended:			CK4 [explanation]

This is 1 of 128 approved meteorites classified as CK4. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (equilibrated), CK chondrites, CK chondrites (type 4-6), and CV-CK clan chondrites

Comments:

Approved 27 Jan 2015

Writeup

Writeup from MB 104:

Northwest Africa 8315 (NWA 8315)

(Northwest Africa)

Purchased: 2014 Jan

Classification: Carbonaceous chondrite (CK4)

History: Purchased by GHupé in February 2014 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Composed of separated, well-formed chondrules (mean 1.8±1.0 mm) containing slightly stained Cr-magnetite in a finer matrix. Minerals are olivine, orthopyroxene, subcalcic diopside, subcalcic augite, augite, intermediate plagioclase, Cr-magnetite, ilmenite and minor altered kamacite.

Geochemistry: Olivine (Fa_32.8-33.5, FeO/MnO = 108-127, N = 3), orthopyroxene (Fs_27.0-28.2Wo_0.7-0.8, N = 3), subcalcic diopside (Fs_2.6Wo_32.8), subcalcic augite (Fs_12.7Wo_28.7), augite (Fs_13.5Wo_48.8).

Classification: Carbonaceous chondrite (CK4).

Specimens: 20.1 g including one polished thin section at UWB. The remaining material is held by GHupé.

Data from:
  MB104
  Table 0
  Line 0:

Place of purchase:	Tucson
Date:	P 2014 Jan
Mass (g):	88.9
Pieces:	1
Class:	CK4
Shock stage:	S2
Weathering grade:	low
Fayalite (mol%):	32.8-33.5
Ferrosilite (mol%):	27.0-28.2
Wollastonite (mol%):	0.7-0.8
Classifier:	A. Irving and S. Kuehner, UWS
Type spec mass (g):	20.1
Type spec location:	UWB
Main mass:	G. Hupe
Comments:	GH-462; 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)
GHupé: Gregory M. Hupé, 9003 Placid Lakes Blvd., Lake Placid, FL 33852, United States; Website (private address)
Hupe: (old address—now see GHupé or AHupé) G. and A. Hupe, 2616 Lake Youngs Court SE, Renton, WA 98058., United States (private address)

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 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names)

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

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