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Northwest Africa 11170
Basic information Name: Northwest Africa 11170
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11170
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 123 g
Classification
  history:
Meteoritical Bulletin:  MB 106  (2018)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 179 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 9 Mar 2017
Writeuphelp
Writeup from MB 106:

Northwest Africa 11170 (NWA 11170)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, brecciated)

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

Physical characteristics: Light grayish individual lacking any fusion crust.

Petrography: The meteorite is a breccia composed of fine-grained basaltic clasts with mineral grains of 50-400 μm set into a less abundant clastic matrix. Dominant minerals in clasts and matrix are pyroxene with fine exsolution lamellae and calcic plagioclase. Minor phases include chromite, SiO2 polymorphs, troilite and metallic iron.

Geochemistry: low-Ca pyroxene: Fs60.1±0.5Wo2.5±0.5 (Fs59.0-61.2Wo2.0-3.5, n=16, FeO/MnO=29-32); Ca-pyroxene: Fs27.0±0.7Wo43.0±0.6 (Fs25.8-28.5Wo41.7-44.0, n=25, FeO/MnO=28-34); calcic plagioclase: An87.8±1.3 (An84.9-89.7, n=19)

Data from:
  MB106
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016
Mass (g):123
Pieces:1
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):60.1; 27.0
Wollastonite (mol%):2.5; 43.0
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 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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