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Northwest Africa 8764
Basic information Name: Northwest Africa 8764
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8764
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 21 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  CO3
Recommended:  CO3    [explanation]

This is 1 of 612 approved meteorites (plus 1 unapproved name) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 13 Feb 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8764 (NWA 8764)

(Northwest Africa)

Purchased: 2014

Classification: Carbonaceous chondrite (CO3)

History: The meteorite was bought 2014 on a mineral fair in Munich, Germany.

Physical characteristics: The two small brownish individuals lack any fusion crust.

Petrography: The meteorite displays a dark bownish interior and consists predominantly of small 0.1-0.3 mm sized chondrules, and less abundant CAIs and olivine amoeboids set into a fine-grained almost opaque matrix. The meteorite is severely weathered and contains several calcite-filled cracks.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Munich, Germany
Date:P 2014
Mass (g):21
Pieces:2
Class:CO3
Shock stage:S1
Weathering grade:W2/3
Fayalite (mol%):13.9±16.6 (0.5-47.5, n=41)
Ferrosilite (mol%):1.5±0.4 (0.9-2.5, n=19)
Wollastonite (mol%):1.4±1.1 (0.8-4.7, n=19)
Classifier:A. Greshake, MNB
Type spec mass (g):4.4
Type spec location:MNB
Main mass:Harald Stehlik
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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