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Northwest Africa 13071
Basic information Name: Northwest Africa 13071
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13071
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 140 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 536 approved meteorites classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 12 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13071 (NWA 13071)

(Northwest Africa)

Purchased: 2015

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was purchased from a meteorite dealer in Morocco.

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: The meteorite shows a dark brownish interior and is composed of abundant small chondrules, CAIs, and mineral fragments set into a fine-grained matrix. Chondrules are dominantly porphyritic type I and have an apparent mean diameter of about 0.2 mm. Some chondrules are surrounded by accretionary dust rims. Sulfides and FeNi metal are present in matrix and chondrules.

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):140
Pieces:1
Class:CO3
Shock stage:S1
Weathering grade:W1
Fayalite (mol%):17.7±19.6 (1.7-63.0, n=15)
Ferrosilite (mol%):2.6±1.8 (1.1-5.9, n=11)
Wollastonite (mol%):2.0±1.1 (1.0-3.8, n=11)
Classifier:A. Greshake, MNB
Type spec mass (g):24.6
Type spec location:MNB
Main mass:anonymous
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7171 approved meteorites from (Northwest Africa) (plus 2003 unapproved names)

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