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Northwest Africa 6959
Basic information Name: Northwest Africa 6959
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6959
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 88.3 g
Classification
  history:
Meteoritical Bulletin:  MB 101  (2012)  R5
Recommended:  R5    [explanation]

This is 1 of 34 approved meteorites classified as R5.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 4-7)
Comments: Approved 22 Aug 2012
Writeuphelp
Writeup from MB 101:

Northwest Africa 6959 (NWA 6959)

(Northwest Africa)

Purchased: 2011 June

Classification: Rumuruti chondrite (R5)

History: Purchased in 2011 June by Greg Hupé from a Moroccan dealer at the St. Marie-aux-Mines Mineral Show.

Petrography: Sparse, small chondrules and mineral fragments set in a fine-grained matrix containing fresh sulfides (pentlandite and pyrrhotite) and chromite. Olivine and clinopyroxene are plentiful, but no orthopyroxene was found.

Geochemistry: Olivine (Fa38.6-38.9), clinopyroxene (Fs10.9-11.8Wo45.4-45.2; Cr2O3 = 0.5-1.2 wt.%). Oxygen isotopes (R. Tanaka, OkaU): replicate analyses of acid-washed subsamples by laser fluorination gave, respectively δ17O = 5.363, 5.384; δ18O = 4.655, 4.566; Δ17O = 2.901, 2.968 per mil).

Classification: R5 chondrite. This is an exceptionally fresh, unweathered specimen.

Data from:
  MB101
  Table 0
  Line 0:
Place of purchase:St. Marie
Date:P 2011 June
Mass (g):88.3
Pieces:2
Class:R5
Shock stage:S1
Weathering grade:very low
Fayalite (mol%):38.6-38.9
Ferrosilite (mol%):10.9-11.8
Wollastonite (mol%):45.4-45.2
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):17.7
Type spec location:UWB
Main mass:GHupé
Comments:GH-416; submitted by A. Irving
Plots: O isotopes:  
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)
OkaU: Institute for Study of the Earth's Interior, Okayama University, Misasa Tottori 682-0193, Japan (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Dominik Stoeckli   
Gregor H.   
Mirko Graul      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6968 approved meteorites from (Northwest Africa) (plus 2012 unapproved names)

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