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Northwest Africa 11790
Basic information Name: Northwest Africa 11790
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11790
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 7.2 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 500 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 3 Aug 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11790 (NWA 11790)

(Northwest Africa)

Purchased: 2018

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was bought from a local meteorite dealer in Morocco.

Physical characteristics: Two black fragments partly covered with fusion crust.

Petrography: The meteorite displays a dark interior and is composed of small (mean diameter about 280 μm) chondrules, mineral fragments and CAIs set into an abundant fine-grained Fe-rich matrix. Opaques are mostly Fe,Ni metal. Several components are surrounded by fine-grained dust rims. Matrix constituents include phyllosilicates (low analytical totals), Ca-carbonates, and pyrrhotite.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2018
Mass (g):7.2
Pieces:2
Class:CO3
Shock stage:S2
Weathering grade:moderate
Fayalite (mol%):15.0±17.6 (0.9-49.8, n=23)
Ferrosilite (mol%):1.5±0.4 (0.9-2.8, n=20)
Wollastonite (mol%):1.6±1.2 (0.8-4.3, n=20)
Classifier:A. Greshake, MNB
Type spec mass (g):1.5
Type spec location:MNB
Main mass:Vincent Gira
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
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Photos:
CreditPhotos
Public domain photographs:
Ansgar Greshake      
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6505 approved meteorites from (Northwest Africa) (plus 2021 unapproved names)

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