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Northwest Africa 14322
Basic information Name: Northwest Africa 14322
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14322
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 373 g
Classification
  history:
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 363 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 13 Nov 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 14322 (NWA 14322)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite, polymict)

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

Physical characteristics: Grayish rock largely covered with fusion crust.

Petrography: The meteorite is a breccia consisting of up to 2.0 cm sized basaltic, gabbroic, and dark impact melt rock clasts and up to 1.5 mm sized mineral fragments in fine-grained clastic and related matrix. Main mineral phases are exsolved pyroxene, low-Ca pyroxene (about 5 vol%), and calcic plagioclase. Minor phases include silica, chromite, ilmenite, and troilite. No metallic iron was detected. Shock melt veins and pockets are present.

Geochemistry: low-Ca pyroxene host to augite exsolution lamellae: Fs58.4±0.5Wo3.1±0.5 (Fs57.4-58.8Wo2.7-4.1, n=9, FeO/MnO=28-32); augite exsolution lamellae: Fs28.4±0.5Wo40.4±0.6 (Fs28.0-29.7Wo39.3-40.9, n=12, FeO/MnO=25-28); low-Ca pyroxene: Fs22.2±0.2Wo3.0±0.1 (Fs21.8-22.4Wo2.9-3.0, n=10, FeO/MnO=26-30); low-Ca-pyroxene: Fs34.9±0.3Wo2.1±0.1 (Fs34.3-35.3Wo1.9-2.2, n=12, FeO/MnO=29-35); calcic plagioclase: An85.9±4.6 (An79.7-90.4, n=16)

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):373
Pieces:1
Class:Eucrite-pmict
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):58.4; 28.4; 22.2; 34.9
Wollastonite (mol%):3.1; 40.4; 3.0; 2.1
Classifier:A. Greshake, MNB
Type spec mass (g):26
Type spec location:MNB
Main mass:David Göttlich
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:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8025 approved meteorites from (Northwest Africa) (plus 1951 unapproved names)

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