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Northwest Africa 10958
Basic information Name: Northwest Africa 10958
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10958
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 1800 g
Meteoritical Bulletin:  MB 105  (2016)  H4-melt breccia
Recommended:  H4-melt breccia    [explanation]

This is 1 of 8 approved meteorites (plus 1 unapproved name) classified as H4-melt breccia.   [show all]
Search for other: H chondrites, H chondrites (type 4-7), Melted chondrites, Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 17 Dec 2016
Writeup from MB 105:

Northwest Africa 10958 (NWA 10958)

(Northwest Africa)

Purchased: 2016 May

Classification: Ordinary chondrite (H4, melt breccia)

History: Purchased by Ben Hoefnagels in May 2016 from a dealer in Ouarzazate, Morocco.

Petrography: (A. Irving and S. Kuehner, UWS) Breccia consisting of rounded chondrite clasts within a much finer grained, dark matrix containing blebby metal and sulfides. The clasts contain well-formed, relatively small chondrules set in a recrystallized matrix containing abundant stained metal.

Geochemistry: Olivine (Fa20.2-20.7, N = 3), orthopyroxene (Fs17.2-18.3Wo1.3-1.6, N = 3, clinopyroxene (Fs6.1-7.7Wo46.1-43.8, N = 2).

Classification: Ordinary chondrite (H4 melt breccia).

Specimens: 106.6 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  Table 0
  Line 0:
Place of purchase:Ouarzazate
Date:P 2016 May
Mass (g):1800
Class:H4-melt breccia
Weathering grade:W1
Fayalite (mol%):20.2-20.7
Ferrosilite (mol%):17.2-18.3
Wollastonite (mol%):1.3-1.6
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):106.6
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:BH018; submitted by A. Irving
   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)
References: Published in Meteoritical Bulletin, no. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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