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Northwest Africa 7436
Basic information Name: Northwest Africa 7436
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 7436
Observed fall: No
Year found: 2004
Country: (Northwest Africa)
Mass:help 7.9 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  H5
Recommended:  H5    [explanation]

This is 1 of 10324 approved meteorites (plus 18 unapproved names) classified as H5.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 4 Feb 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 7436 (NWA 7436)

(Northwest Africa)

Purchased: 2004

Classification: Ordinary chondrite (H5)

Petrography: Chondrules are identifiable, but many are not well-defined. Plagioclase grains are often 10s of μm across and occasionally up to 50 μm.

Geochemistry: Olivine, Fa19.7±1.5 (N=50); pyroxene, Fs=16.9±1.1Wo1.2±0.3 (N=57, EMPA).

Classification: Ordinary Chondrite H5, S4, W3.

Specimens: The specimen includes a thin section and two pieces of 6.5 and 1.4 g.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2004
Mass (g):7.9
Pieces:1
Class:H5
Shock stage:S4
Weathering grade:W3
Fayalite (mol%):19.7±1.5 (N=50)
Ferrosilite (mol%):16.9±1.1(N=57)
Wollastonite (mol%):1.2±0.3 (N=57)
Classifier:Tahina Choudhury
Type spec mass (g):7.9
Type spec location:ROM
Main mass:ROM
Comments:Submitted by B. C. Hyde
Institutions
   and collections
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
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 7912 approved meteorites from (Northwest Africa) (plus 1974 unapproved names)

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