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Northwest Africa 6860
Basic information Name: Northwest Africa 6860
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6860
Observed fall: No
Year found: 2011
Country: (Northwest Africa)
Mass:help 80.5 g
Classification
  history:
Meteoritical Bulletin:  MB 100  (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 29 Nov 2011
Writeuphelp
Writeup from MB 100:

Northwest Africa 6860 (NWA 6860)

Northwest Africa

Purchased: Feb 2011

Classification: Rumuruti chondrite (R5)

Petrography: Fresh breccia composed of clasts containing sparse PO and RP chondrules plus related debris in a darker, fine-grained matrix. Constituent minerals are olivine, orthopyroxene, clinopyroxene, albitic plagioclase, Ti-chromite, troilite and pentlandite.

Geochemistry: Olivine Fa38.8-38.9, FeO/MnO=90-100, orthopyroxene Fs30.4Wo1.4, clinopyroxene Fs10.8-11.6Wo45.4-44.7 (Cr2O3=0.33-0.55 wt%).

Data from:
  MB100
  Table 1
  Line 1515:
Place of purchase:Tuscon
Date:P Feb 2011
Mass (g):80.5
Pieces:several
Class:R5
Shock stage:S2
Weathering grade:very low
Fayalite (mol%):38.8-38.9
Ferrosilite (mol%):30.4
Wollastonite (mol%):1.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):16.3
Type spec location:UWS
Main mass:M. Bandli
Comments:B264; 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)
Catalogs:
References: Published in Meteoritical Bulletin, no. 100, MAPS 49, E1-E101 (2014)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6916 approved meteorites from (Northwest Africa) (plus 2027 unapproved names)

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