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Northwest Africa 11173
Basic information Name: Northwest Africa 11173
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11173
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 566 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 199 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 4 Mar 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11173 (NWA 11173)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was bought in 2016 from a meteorite dealer in Morocco.

Physical characteristics: Dark grayish indidual partly covered with fusion crust.

Petrography: The meteorite is a breccia composed of fine- and coarse-grained basaltic clasts both dominated by exsolved pyroxene and lath shaped calcic plagioclase. Grain sizes vary from few µm in fine-grained lithologies to up to 300 μm in coarse-grained clasts. Minor phases include silica, chromite, ilmenite, and FeS. No metallic iron was found. The meteorite contains shock melt veins.

Geochemistry: low-Ca pyroxene: Fs65.9±0.8Wo5.4±1.0 (Fs65.0-67.5Wo3.6-6.2, n=11, FeO/MnO=29-32); Ca-pyroxene: Fs40.7±3.1Wo33.7±3.7 (Fs33.9-44.7Wo29.4-41.7, n=12, FeO/MnO=30-37); calcic plagioclase: An78.8±2.7 (An74.4-82.9, n=13)

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016
Mass (g):566
Pieces:1
Class:Eucrite-br
Shock stage:low
Weathering grade:moderate
Ferrosilite (mol%):65.9; 40.7
Wollastonite (mol%):5.4; 33.7
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
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:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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