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Northwest Africa 11934
Basic information Name: Northwest Africa 11934
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 11934
Observed fall: No
Year found: 2018
Country: (Northwest Africa)
Mass:help 151.9 g
Classification
  history:
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 329 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 31 Aug 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 11934 (NWA 11934)

(Northwest Africa)

Purchased: 2018

Classification: HED achondrite (Eucrite, polymict)

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

Physical characteristics: Three fragments lacking any fusion crust.

Petrography: The meteorite is a polymict breccia composed of mineral and lithic clasts (basaltic and dark impact melt clasts) set into a fine-grained clastic matrix. Main minerals in clasts and matrix are exsolved pyroxene and calcic plagioclase. Minor phases include up to 2 mm sized diogenetic orthopyroxene, silica, chromite, ilmenite, and FeS. No metallic Fe has been detected.

Geochemistry: pyroxene host to augite lamellae: Fs37.6±9.5Wo5.3±1.9 (Fs23.0-55.4Wo3.1-9.1, n=21, FeO/MnO=27-37); Ca-pyroxene: Fs34.4±10.8Wo36.3±3.2 (Fs25.0-57.8Wo29.3-41.8, n=19, FeO/MnO=27-38); diogenitic pyroxene: Fs29.1±0.2Wo3.3±0.2 (Fs28.8-29.4Wo2.9-3.7, n=11, FeO/MnO=28-35); calcic plagioclase: An91.2±1.4 (An88.6-94.3, n=13)

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Ensisheim, France
Date:P 2018
Mass (g):151.9
Pieces:3
Class:Eucrite-pmict
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):37.6; 34.4; 29.1
Wollastonite (mol%):5.3; 36.3; 3.3
Classifier:A. Greshake, MNB
Type spec mass (g):21.2
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:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6505 approved meteorites from (Northwest Africa) (plus 2021 unapproved names)

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