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Northwest Africa 11215
Basic information Name: Northwest Africa 11215
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11215
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 15.69 kg
Meteoritical Bulletin:  MB 106  (2018)  H4
Recommended:  H4    [explanation]

This is 1 of 6400 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 28 Mar 2017
Writeup from MB 106:

Northwest Africa 11215 (NWA 11215)

(Northwest Africa)

Purchased: 2017-Feb

Classification: Ordinary chondrite (H4)

History: Purchased by Darryl Pitt in February 2017 from a Moroccan dealer at the Tucson Gem and Mineral Show.

Petrography: (A. Irving and S. Kuehner, UWS) Relatively small, well-formed chondrules occur in a recrystallized matrix containing abundant altered metal.

Geochemistry: Olivine (Fa17.5-17.8, N = 3), orthopyroxene (Fs15.2-16.3Wo1.3-1.0, N = 3), clinopyroxene (Fs5.6-7.3Wo47.5-42.7, N = 2).

Classification: Ordinary chondrite (H4).

Specimens: 28.9 g including one polished thin section at UWB; remainder with DPitt.

Data from:
  Table 0
  Line 0:
Place of purchase:Tucson
Date:P 2017-Feb
Mass (g):15685
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):17.5-17.8
Ferrosilite (mol%):15.2-16.3
Wollastonite (mol%):1.3-1.0
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):28.9
Type spec location:UWB
Main mass:D. Pitt
Comments:Work name MVCH 234; 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)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
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     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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