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Northwest Africa 12018
Basic information Name: Northwest Africa 12018
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12018
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 192.4 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  H6
Recommended:  H6    [explanation]

This is 1 of 6213 approved meteorites (plus 5 unapproved names) classified as H6.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 23 Sep 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12018 (NWA 12018)

(Northwest Africa)

Purchased: 2012 Feb

Classification: Ordinary chondrite (H6)

Petrography: Sample is divided into darker and lighter clasts throughout the slide. Chondrules are difficult to detect as not many of them are intact. A fine grained matrix is observed.  Although maskelynite is not observed, undulatory extinction and mosaicism are quite common. Interconnected shock veins are also seen. Not many metal grains are affected by oxidation. However, pervasive and interconnected oxide veins are seen throughout the slide. (S. Yokoyama, ROM).

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Tucson Gem and Mineral Show
Date:P 2012 Feb
Mass (g):192.43
Pieces:1
Class:H6
Shock stage:S4
Weathering grade:W2
Fayalite (mol%):19.8±1
Classifier:S. Yokoyama, ROM
Type spec mass (g):25.1
Type spec location:ROM
Main mass:DGregory
Comments:Catalogued at the Royal Ontario Museum as LM58145; submitted by V. Di Cecco, ROM
Institutions
   and collections
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
DGregory: David Gregory, 230 First Avenue, Suite 108, St. Thomas, Ontario N5R 4P5, Canada (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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