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Northwest Africa 13164
Basic information Name: Northwest Africa 13164
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13164
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 284 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 455 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 9 Feb 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13164 (NWA 13164)

(Northwest Africa)

Purchased: 2019

Classification: HED achondrite (Eucrite)

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

Physical characteristics: Grayish rock partly covered with fusion crust.

Petrography: The meteorite is a coarse-grained monomict breccia composed of of exsolved pyroxene and plagioclase grains up to 4 mm in size. Minor phases include silica, ilmenite, and FeS. No metallic iron has been detected.

Geochemistry: low-Ca pyroxene: Fs57.6±1.1Wo2.5±0.6 (Fs55.6-59.5Wo1.9-3.9, FeO/MnO=24-29, n=12); Ca-pyroxene: Fs24.9±0.5Wo44.2±0.8 (Fs24.2-26.5Wo42.0-45.2, FeO/MnO=25-29, n=16); calcic plagioclase: An88.9±1.6 (An86.5-90.5, n=13)

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2019
Mass (g):284
Pieces:1
Class:Eucrite
Shock stage:low
Weathering grade:low
Ferrosilite (mol%):57.6; 24.9
Wollastonite (mol%):2.5; 44.2
Classifier:A. Greshake, MNB
Type spec mass (g):24.9
Type spec location:MNB
Main mass:R. Lenssen
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. 109, in preparation (2020)
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7171 approved meteorites from (Northwest Africa) (plus 2003 unapproved names)

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