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Northwest Africa 14321
Basic information Name: Northwest Africa 14321
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14321
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 2.2 kg
Classification
  history:
Recommended:  Eucrite-cm    [explanation]

This is 1 of 52 approved meteorites classified as Eucrite-cm.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 5 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14321 (NWA 14321)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite, cumulate)

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

Physical characteristics: Four light brownish fragments with some fusion crust.

Petrography: The achondrite shows a granular texture of predominantly up to 4 mm sized accumulated low-Ca-pyroxene and abundant plagioclase occurring interstitially and as rounded to subrounded inclusions in pyroxene. Low-Ca pyroxene contains abundant augite exsolutions lamellae and blebs. Minor phases include chromite, FeS, and metallic iron. The meteorite is highly shocked. It contains abundant shock veins and plagioclase is partly converted into maskelynite. Pyroxene shows brownish staining due to terrestrial alteration.

Geochemistry: low-Ca pyroxene host: Fs39.3±0.1Wo2.7±0.1 (Fs39.1-39.6Wo2.5-2.8, n=10, FeO/MnO=26-29); augite exsolution lamellae: Fs16.5±0.2Wo43.0±0.3 (Fs16.1-16.7Wo42.4-43.4, n=10, FeO/MnO=23-27); calcic plagioclase: An93.6±0.5 (An92.7-94.4, n=10); chromite:Cr#=79.9±0.2, Mg#10.7±0.3, TiO2=3.6±0.1 wt%, n=7

Classification: Eucrite-cm based on mineral chemistry and texture.

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):2200
Pieces:4
Class:Eucrite-cm
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):39.3; 16.5
Wollastonite (mol%):2.7; 43.0
Classifier:A. Greshake, MNB
Type spec mass (g):27
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 Meteoritical Bulletin, no. 110, in preparation (2021)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Ryan Upchurch   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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