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Northwest Africa 13651
Basic information Name: Northwest Africa 13651
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13651
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 376 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 490 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 10 Jan 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 13651 (NWA 13651)

(Northwest Africa)

Purchased: 2020 Oct

Classification: HED achondrite (Eucrite)

History: The meteorite was purchased from a dealer in Tindouf, Algeria.

Physical characteristics: Dark brownish rock without fusion crust.

Petrography: The meteorite is a breccia composed of up to 1.5 cm sized basaltic, black melt rock, and mineral clasts set into a fine-grained clastic matrix. Mineral phases are predominantly exsolved pyroxene and calcic plagioclase with grains sizes of about 50 to 700 µm. Minor phases include silica, ilmenite, chromite, and troilite. No metallic iron has been detected. The meteorite contains shock melt veins and pockets.

Geochemistry: low-Ca pyroxene: Fs60.2±1.8Wo2.3±0.1 (Fs58.5-62.8Wo2.1-2.4, n=12, FeO/MnO=27-30); Ca-pyroxene: Fs26.0±1.0Wo43.6±1.2 (Fs24.5-27.1Wo40.2-44.8, n=11, FeO/MnO=26-30); calcic plagioclase: An84.3±5.0 (An79.8-91.6, n=11)

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Tindouf, Algeria
Date:P 2020 Oct
Mass (g):376
Pieces:2
Class:Eucrite
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):60.2; 26.0
Wollastonite (mol%):2.3; 43.6
Classifier:A. Greshake, MNB
Type spec mass (g):43.4
Type spec location:MNB
Main mass:Salamu Hamad
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:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7547 approved meteorites from (Northwest Africa) (plus 1970 unapproved names)

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