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Northwest Africa 11746
Basic information Name: Northwest Africa 11746
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11746
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 9.4 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 171 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 7 Apr 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11746 (NWA 11746)

(Northwest Africa)

Purchased: 2015

Classification: Martian meteorite (Shergottite)

History: Purchased by Jay Piatek from Morocco, 2015.

Physical characteristics: Fusion crusted individual. A saw-cut surface reveals gray-green, fine-grained, basaltic texture.

Petrography: (C. Agee, UNM) Microprobe examination of a polished mount shows an ophitic texture with ~60% zoned pyroxene and ~30% maskelynite. Accessory phases include titanomagnetite, ilmenite, Fe-sulfide, and silica.

Geochemistry: (C. Agee, UNM) Pigeonite Fs50.5±14.8Wo16.9±6.8, Fe/Mn=37±3, n=8; augite Fs29.3±10.4Wo31.7±2.8, Fe/Mn=32±4, n=12; maskelynite Or2.8±1.1Ab49.8±3.9An47.4±4.9, n=6.

Classification: Martian (shergottite), pyroxene-phyric. Possibly paired with NWA 10016.

Specimens: 1.9 g including a probe mount on deposit at UNM, Jay Piatek holds the main mass.

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2015
Mass (g):9.4
Pieces:1
Class:Martian (shergottite)
Shock stage:High
Weathering grade:Low
Ferrosilite (mol%):50.5±14.8, 29.3±10.4
Wollastonite (mol%):16.9±6.8, 31.7±2.8
Classifier:C. Agee, UNM
Type spec mass (g):1.9
Type spec location:UNM
Main mass:Jay Piatek
Comments:Fieldname JP-24; submitted by C. Agee
Institutions
   and collections
UNM: Institute of Meteoritics MSC03 2050 University of New Mexico Albuquerque NM 87131-1126 USA, United States; Website (institutional address; updated 12 Feb 2015)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, in preparation (2018)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6365 approved meteorites from (Northwest Africa) (plus 2024 unapproved names)

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