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Northwest Africa 11762
Basic information Name: Northwest Africa 11762
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11762
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 42 g
Classification
  history:
Meteoritical Bulletin:  MB 107  (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 11 May 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11762 (NWA 11762)

(Northwest Africa)

Purchased: 2014

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was purchased from a local meteorite dealer in Zagora, Morocco.

Physical characteristics: Small dark greyish individual with some fusion crust.

Petrography: The meteorite is a fragmental breccia composed of up to 5 mm sized basaltic clasts and dark impact melt clasts set into a fine-grained clastic matrix. Basaltic clasts and matrix are dominantly composed of exsolved pyroxene and plagioclase grains of variable grain sizes ranging from about 20 to 600 µm. Several matrix pyroxenes display magmatic zoning. Minor phases include ilmenite, pyrrhotite, silica, apatite, and metallic iron.

Geochemistry: low-Ca pyroxene Fs42.3±10.3Wo3.9±1.2 (Fs20.9-51.3Wo2.0-5.7, n=15, FeO/MnO=31-47); Ca-pyroxene: Fs25.2±1.0Wo39.6±1.4 (Fs23.2-27.6Wo37.1-42.1, n=14, FeO/MnO=30-35); calcic plagioclase: An90.2±1.5 (An87.5-92.5, n=14)

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Zagora, Morocco
Date:P 2014
Mass (g):42
Pieces:1
Class:Eucrite-br
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):42.3; 25.2
Wollastonite (mol%):3.9; 39.6
Classifier:A. Greshake, MNB
Type spec mass (g):8.4
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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