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Northwest Africa 11339
Basic information Name: Northwest Africa 11339
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11339
Observed fall: No
Year found: 2017
Country: (Northwest Africa)
Mass:help 161 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Martian (shergottite)
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 260 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 14 Jul 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11339 (NWA 11339)

(Northwest Africa)

Purchased: 2017 Apr

Classification: Martian meteorite (Shergottite)

History: Purchased by Ben Hoefnagels in April 2017 from a dealer in Zagora, Morocco.

Physical characteristics: A single stone (161 g) partially covered by black fusion crust. The fresh interior is greenish-gray with sporadic small dark glass pockets and thin black, glassy veinlets.

Petrography: (A. Irving and S. Kuehner, UWS) The specimen is composed predominantly (~70 vol.%) of stubby prismatic grains of zoned clinopyroxene (grainsize 0.3-0.5 mm) with ~30 vol.% maskelynite plus accessory ilmenite, titanomagnetite, pyrrhotite, merrillite and K-Al-Si-rich glass. Some thin cross-cutting veinlets of black shock glass are present.

Geochemistry: Pigeonite (Fs34.3-60.5Wo10.8-15.5, FeO/MnO = 32-38, N = 4), subcalcic augite (Fs24.4-40.8Wo33.3-28.4, FeO/MnO = 32-36, N = 4), maskelynite (An42.0-47.7Or3.9-3.3, N = 2).

Classification: Martian (shergottite, pyroxene-rich).

Specimens: 20.4 g including one polished thin section at UWB; remainder with Mr. B. Hoefnagels.

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2017 Apr
Mass (g):161
Pieces:1
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):34.3-60.5; 24.4-40.8
Wollastonite (mol%):10.8-15.5; 33.3-28.4
Classifier:A. Irving and S. Kuehner, UWS
Type spec mass (g):20.4
Type spec location:UWB
Main mass:B. Hoefnagels
Comments:Work name BH059; 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)
Catalogs:
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.
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7885 approved meteorites from (Northwest Africa) (plus 1958 unapproved names)

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