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Northwest Africa 15234
Basic information Name: Northwest Africa 15234
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 15234
Observed fall: No
Year found: 2022
Country: (Northwest Africa)
Mass:help 564 g
Meteoritical Bulletin:  MB 111  (2023)  Eucrite-melt breccia
Recommended:  Eucrite-melt breccia    [explanation]

This is 1 of 108 approved meteorites classified as Eucrite-melt breccia.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 5 Sep 2022
Writeup from MB 111:

Northwest Africa 15234 (NWA 15234)

(Northwest Africa)

Purchased: August 2022

Classification: HED achondrite (Eucrite, melt breccia)

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

Physical characteristics: Grayish rock without fusion crust.

Petrography: Eucrite-melt breccia composed of up to 1.5 cm basaltic clasts and up to 0.3 mm sized mineral fragments in fine-grained and mostly recrystallized shock melted matrix. Main minerals are exsolved pyroxenes and calcic plagioclase. Mineral grains entrained in the melt matrix often show resorption textures. Minor phases include silica, chromite, ilmenite, and FeS. No metallic iron has been detected. Contains secondary calcite veins and barite.

Geochemistry: low-Ca pyroxene: Fs60.1±0.8Wo2.3±0.1 (Fs59.4-60.5Wo2.1-2.5, FeO/MnO=29-30, n=7); augite exsolution lamellae: Fs24.9±0.2Wo44.5±0.4 (Fs24.5-25.1Wo44.2-45.4, FeO/MnO=28-32, n=7); calcic plagioclase: An90.2±0.9 (An89.6-91.7, n=7)

Data from:
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P August 2022
Mass (g):564
Class:Eucrite-melt breccia
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):60.1; 24.9
Wollastonite (mol%):2.3; 44.5
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Polandmet - Marcin Cimala
Comments:Submitted by Ansgar Greshake
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Polandmet: targoniny 30 43445 Dziegielow Poland, Poland; Website (institutional address; updated 7 May 2021)
References: Published in Gattacceca J., McCubbin F. M., Grossman J. N., Schrader D. L., Chabot N. L., D’Orazio M., Goodrich C., Greshake A., Gross J., Joy K. H., Komatsu M. and Miao B. (2023) The Meteoritical Bulletin, No. 111. Meteoritics & Planetary Science 58, 901–904. ?
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     This is 1 of 9825 approved meteorites from (Northwest Africa) (plus 1851 unapproved names)

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