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Northwest Africa 8749
Basic information Name: Northwest Africa 8749
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8749
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 1139 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  H4
Recommended:  H4    [explanation]

This is 1 of 6033 approved meteorites (plus 11 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 27 Jan 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8749 (NWA 8749)

(Northwest Africa)

Purchased: 2014 Jul

Classification: Ordinary chondrite (H4)

History: Purchased by Darryl Pitt in July 2014 from a dealer in Mauritania.

Petrography: (A. Irving and S. Kuehner, UWS) Separated, well-formed, relatively small chondrules (0.6 ± 0.2 mm, several up to 1.4 mm) are set in a metal-rich matrix.

Geochemistry: Olivine (Fa16.1-16.3, N = 4), orthopyroxene (Fs14.5-17.4Wo0.4-1.5, N = 3), subcalcic augite (Fs9.5Wo29.2), augite (Fs7.6Wo39.5).

Classification: Ordinary chondrite (H4).

Specimens: 23.6 g including one polished thin section at UWB; the remainder is held by DPitt.

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Mauritania
Date:P 2014 Jul
Mass (g):1138.6
Pieces:1
Class:H4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):16.1-16.3
Ferrosilite (mol%):14.5-17.4
Wollastonite (mol%):0.4-1.5
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):23.6
Type spec location:UWB
Main mass:D. Pitt
Comments:MAC 67; submitted by A. Irving
Institutions
   and collections
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (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:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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