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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:help 88.9 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  CK4
Recommended:  CK4    [explanation]

This is 1 of 105 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
Writeuphelp
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 (Fa32.8-33.5, FeO/MnO = 108-127, N = 3), orthopyroxene (Fs27.0-28.2Wo0.7-0.8, N = 3), subcalcic diopside (Fs2.6Wo32.8), subcalcic augite (Fs12.7Wo28.7), augite (Fs13.5Wo48.8).

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, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
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
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6984 approved meteorites from (Northwest Africa) (plus 2008 unapproved names)

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