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Northwest Africa 12019
Basic information Name: Northwest Africa 12019
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12019
Observed fall: No
Year found: 2012
Country: (Northwest Africa)
Mass:help 48.9 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (2018)  H4
Recommended:  H4    [explanation]

This is 1 of 6038 approved meteorites (plus 2 unapproved names) classified as H4.   [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 12019 (NWA 12019)

(Northwest Africa)

Purchased: 2012

Classification: Ordinary chondrite (H4)

Petrography: Some patches of dark coexist with the brown. Chondrules are well defined in a mainly recrystalized matrix. Some opaque shock veins and undulatory extinctions are seen while sharp optial extinctions are still common in many olivine grains. Between 50 and 60% of Ni-Fe metal has been replaced by oxidation. Oxide rims are common as well as oxidation veins. (S. Yokoyama, ROM).

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Bessey
Date:P 2012
Mass (g):48.89
Pieces:1
Class:H4
Shock stage:S3
Weathering grade:W2
Fayalite (mol%):18.7±1
Classifier:S. Yokoyama, ROM
Type spec mass (g):10.2
Type spec location:ROM
Main mass:DGregory
Comments:Catalogued at the Royal Ontario Museum as LM58150; 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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