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Northwest Africa 8613
Basic information Name: Northwest Africa 8613
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8613
Observed fall: No
Year found: 2013
Country: (Northwest Africa)
Mass:help 316 g
Classification
  history:
Meteoritical Bulletin:  MB 103  (2014)  CV3
Recommended:  CV3    [explanation]

This is 1 of 482 approved meteorites (plus 2 unapproved names) classified as CV3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites
Comments: Approved 17 Nov 2014
Writeuphelp
Writeup from MB 103:

Northwest Africa 8613 (NWA 8613)

(Northwest Africa)

Purchased: 2013 Sep 13

Classification: Carbonaceous chondrite (CV3)

History: Purchased at Denver Mineral Show from a Moroccan mineral dealer.

Geochemistry: Abundant CAIs (Type A dominant) and AOIs were observed. The modal abundance of the matrix is 40 vol.%. Chondrules are large, 0.7 mm in size, and most of them are Type I. Phenocrysts in chondrules are magnesian without zoning. The secondary alteration to form nepheline, phyllosilicate and others is not observed. Magnetite was not encountered, and Fe-Ni metal is common.

Data from:
  MB103
  Table 0
  Line 0:
Place of purchase:Dever
Date:P 2013 Sep 13
Mass (g):316
Pieces:1
Class:CV3
Shock stage:S1
Weathering grade:W3
Fayalite (mol%):2.1±2.1 (N=14)
Ferrosilite (mol%):1.7±0.4 (N=6)
Wollastonite (mol%):1.2±0.8 (N=6)
Classifier:R. Sato, T. Noguchi, and M. Kimura, Ibaraki
Type spec mass (g):24.4
Type spec location:NMNS
Main mass:Hori Mineraology, Japan
Comments:Field name:HM13-2; submitted by Makoto Kimura
Institutions
   and collections		 NMNS: National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, JAPAN, Japan; Website (institutional address; updated 16 Jun 2014)
Ibaraki: Department of Materials and Biological Sciences, Institute of Astrophysics and Planetary Science, Ibaraki University, 2-1-1 Bunkyo, Mito 310-8512, Japan (institutional address; updated 27 Feb 2011)
Hori: Unknown person (private address; updated 17 Apr 2009)
Catalogs:
References: Published in Meteoritical Bulletin, no. 103, MAPS 52, 1014, May 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12888/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9927 approved meteorites from (Northwest Africa) (plus 1837 unapproved names)

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