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Northwest Africa 14324
Basic information Name: Northwest Africa 14324
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 14324
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 6 g
Recommended:  Eucrite-melt breccia    [explanation]

This is 1 of 57 approved meteorites classified as Eucrite-melt breccia.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 13 Nov 2021
Writeup from MB 110:

Northwest Africa 14324 (NWA 14324)

(Northwest Africa)

Purchased: May, 2021

Classification: HED achondrite (Eucrite, melt breccia)

History: The meteorite was initially purchased from a group of meteorites hunters in Nouadhibou, Mauritania, in May 2021 and donated to MNB by Mr. Salamu Ali.

Physical characteristics: Small, dark greenish fragment without fusion crust. The interior is grayish.

Petrography: The meteorite is a melt breccia composed of up to 4 mm sized coarse-grained basaltic and gabbroic clasts and up to 1 mm sized minerals fragments set into fine-grained clastic, often shock melted matrix. Main minerals are exsolved pyroxenes and calcic plagioclase. Melt regions appear glassy with abundant schlieren and rounded to subrounded entrained mineral fragments showing resorption textures. Minor phases include silica, Ti-bearing chromite, ilmenite, FeS, and metallic iron. The meteorite contains secondary barite and calcite-filled cracks.

Geochemistry: low-Ca pyroxene: Fs59.7±0.7Wo4.4±0.7 (Fs57.9-60.3Wo3.9-6.4, n=9, FeO/MnO=28-31); Ca-pyroxene: Fs31.2±0.4Wo38.9±0.5 (Fs30.7-31.8Wo38.0-39.7, n=11, FeO/MnO=28-33); calcic plagioclase: An89.6±1.0 (An88.0-91.2, n=13)

Data from:
  Table 0
  Line 0:
Place of purchase:Nouadhibou, Mauritania
Date:P May, 2021
Mass (g):6
Class:Eucrite-melt breccia
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):59.7; 31.2
Wollastonite (mol%):4.4; 38.9
Classifier:A. Greshake, MNB
Type spec mass (g):6
Type spec location:MNB
Main mass:MNB
Comments:Submitted by Ansgar Greshake
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
References: Published in Meteoritical Bulletin, no. 110, in preparation (2021)
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     This is 1 of 8138 approved meteorites from (Northwest Africa) (plus 1941 unapproved names)

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