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Northwest Africa 11933
Basic information Name: Northwest Africa 11933
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11933
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 65.7 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 405 approved meteorites classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 31 Aug 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11933 (NWA 11933)

(Northwest Africa)

Purchased: 2018

Classification: HED achondrite (Eucrite)

History: The meteorite was bought from a Moroccan meteorite dealer at a mineral fair in Ensisheim, France.

Physical characteristics: Greyish individual with some patches of fusion crust.

Petrography: The meteorite is an unbrecciated medium-grained basalt predominantly composed of exsolved pyroxene and calcic plagioclase with average grain sizes of about 500 μm. Pyroxene appears brownish in plane polarized light. Minor phases include silica, ilmenite, chromite, troilite, and metallic iron.

Geochemistry: low-Ca pyroxene: Fs58.5±0.6Wo2.8±0.7 (Fs56.9-59.2Wo2.3-4.5, n=11, FeO/MnO=28-31); Ca-pyroxene: Fs29.1±1.7Wo40.5±1.9 (Fs27.7-33.5Wo36.0-41.9, n=10, FeO/MnO=27-31); calcic plagioclase: An89.9±0.8 (An89.5-90.7, n=13)

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Ensisheim, France
Date:P 2018
Mass (g):65.7
Pieces:1
Class:Eucrite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):58.5; 29.1
Wollastonite (mol%):2.8; 40.5
Classifier:A. Greshake, MNB
Type spec mass (g):14.3
Type spec location:MNB
Main mass:Hanno Strufe
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstrasse 43, D-10115 Berlin, Germany (institutional address)
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 6423 approved meteorites from (Northwest Africa) (plus 2023 unapproved names)

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