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Northwest Africa 12327
Basic information Name: Northwest Africa 12327
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 12327
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 21.6 g
Classification
  history:
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 341 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 11 Dec 2018
Writeuphelp
Writeup from MB 107:

Northwest Africa 12327 (NWA 12327)

(Northwest Africa)

Purchased: 2016

Classification: HED achondrite (Eucrite, polymict)

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

Physical characteristics: Two dark grayish individuals with fusion crust.

Petrography: The meteorite is a coarse-grained basaltic breccia composed of up to 6 mm sized basaltic and up to 5 mm sized dark impact melt clasts set into a clastic matrix. Mineral phases are predominantly up to 1.5 mm sized exsolved pyroxene and lath shaped calcic plagioclase. Several low-Ca pyroxene grains are magmatically zoned indicating a low degree of thermal metamorphism. Minor phases include silica, chromite, and FeNi metal.

Geochemistry: low-Ca pyroxene: Fs41.1±4.2Wo2.6±0.9 (Fs33.3-45.8Wo1.2-3.8, n=21, FeO/MnO=28-37); Ca-pyroxene: Fs21.0±0.3Wo41.9±0.6 (Fs20.4-21.7Wo40.8-42.5, n=15, FeO/MnO=23-27); calcic plagioclase: An91.0±1.6 (An88.5-93.2, n=15)

Data from:
  MB107
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2016
Mass (g):21.6
Pieces:2
Class:Eucrite-pmict
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):41.1; 21.0
Wollastonite (mol%):2.6; 41.9
Classifier:A. Greshake, MNB
Type spec mass (g):6.7
Type spec location:MNB
Main mass:Franco Vignato
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 7005 approved meteorites from (Northwest Africa) (plus 2002 unapproved names)

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