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Northwest Africa 11044
Basic information Name: Northwest Africa 11044
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11044
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 104.7 g
Classification
  history:
Recommended:  Martian (shergottite)    [explanation]

This is 1 of 161 approved meteorites (plus 1 unapproved name) classified as Martian (shergottite).   [show all]
Search for other: Martian meteorites
Comments: Approved 9 Jun 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11044 (NWA 11044)

(Northwest Africa)

Purchased: 2016

Classification: Martian meteorite (Shergottite)

History: Two stones weighing 95.3 and 9.4 g were found and subsequently purchased in Zagora in 2016. Don Cline and John Sinclair acquired the samples from a meteorite prospector at the Tucson Gem and Mineral Show in February 2016.

Physical characteristics: Sample is ovoid in shape and contain small patches of vesicular, black impact melt material (some of which contains embedded sand grains). The exterior surface is dark green and displays an igneous texture.

Petrography: Description and classification (A. Love, App): Sample has an ophitic texture composed of ~73 vol% prismatic pyroxenes surrounding irregular-lath shaped, isotropic grains (maskelynitized plagioclase) and opaque grains. The sample is crosscut by vesicular melt veins and pools. Minerals are augite, pigeonite, maskelynite, ilmenite, pyrrhotite, merrillite, and silica polymorph.

Geochemistry: (A. Love, App): Pyroxene crystals are complexly zoned with augite cores (Fs23.8±4.4Wo33.6±2.0, N=11; Fe/Mn=29.4±2.1) and subcalcic augite rims (Fs58.3±5.6Wo21.9±2.7, N=9; Fe/Mn=38.3±0.7) and pigeonite rims (Fs56.1±11.6Wo14.5±1.2, N=11; Fe/Mn=36.7±3.5). Oxygen isotopes (K. Ziegler, UNM): analyses of 3 acid-washed mineral separates by laser fluorination gave, respectively, ?17O = 2.875, 2.948, 2.850; ?18O = 4.886, 5.033, 4.826; ?17O = 0.295, 0.291, 0.302 (data are linearized all per mil).

Classification: Martian (shergottite, diabasic). Likely paired with NWA 8656.

Specimens: PARI holds the main masses (71.44 and 9.4 g). A 20 g type specimen and one polished thin section are on deposit at App

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Tuscon
Date:P 2016
Mass (g):104.7
Pieces:2
Class:Martian (shergottite)
Shock stage:high
Weathering grade:low
Ferrosilite (mol%):23.8±4.4; 56.1±11.6
Wollastonite (mol%):33.6±2.0; 14.5±1.2
Classifier:A. Love, App
Type spec mass (g):20
Type spec location:App
Main mass:PARI
Finder:Anonymous
Comments:Submitted by Anthony Love
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)
App: Department of Geology, 572 Rivers St., Appalachian State University, Boone, NC 28608, United States (institutional address; updated 7 Mar 2013)
PARI: Pisgah Astronomical Research Institute 1 Pari Dr Rosman, NC 28772, United States (institutional address; updated 13 Sep 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 106, in preparation (2017)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 5898 approved meteorites from (Northwest Africa) (plus 2063 unapproved names)

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