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Northwest Africa 13873
Basic information Name: Northwest Africa 13873
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13873
Observed fall: No
Year found: 2021
Country: (Northwest Africa)
Mass:help 166 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 565 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 28 Mar 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13873 (NWA 13873)

(Northwest Africa)

Purchased: 2021

Classification: HED achondrite (Eucrite)

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

Physical characteristics: Grayish rock partly covered with fusion crust.

Petrography: The meteorite is a fragmental breccia composed of up to 3 mm sized basaltic and up to 1 cm sized black melt rock clasts set into a clastic matrix. Mineral phases are predominantly up to 600 µm sized exsolved pyroxene and calcic plagioclase grains. Minor phases include silica polymorph, chromite, ilmenite, troilite, and metallic iron.

Geochemistry: low-Ca pyroxene: Fs55.6±0.2Wo3.7±0.1 (Fs55.4-55.9Wo3.5-3.9, FeO/MnO=32-34, n=7); Ca-pyroxene: Fs28.6±0.8Wo40.6±1.4 (Fs27.8-30.3Wo37.3-41.4, FeO/MnO=27-32, n=7); calcic plagioclase: An90.2±1.0 (An88.5-91.6, n=9)

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Morocco
Date:P 2021
Mass (g):166
Pieces:1
Class:Eucrite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):55.6; 28.6
Wollastonite (mol%):3.7; 40.6
Classifier:A. Greshake, MNB
Type spec mass (g):23.7
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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8745 approved meteorites from (Northwest Africa) (plus 1880 unapproved names)

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