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Northwest Africa 13395
Basic information Name: Northwest Africa 13395
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13395
Observed fall: No
Year found: 2020
Country: (Northwest Africa)
Mass:help 736 g
Classification
  history:
Recommended:  Eucrite-mmict    [explanation]

This is 1 of 238 approved meteorites classified as Eucrite-mmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 5 Sep 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13395 (NWA 13395)

(Northwest Africa)

Purchased: 2020

Classification: HED achondrite (Eucrite, monomict)

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

Physical characteristics: Many grayish fragments with the largest one weighing 34 g. Some fragments are partly covered with fusion crust.

Petrography: The meteorite is a fragmental breccia composed of exsolved pyroxene (up to 400 µm) and calcic plagioclase (up to 500 µm) grains set into a more fine-grained clastic matrix. Minor phases include silica, chromite, ilmenite, FeS, and metallic iron. Some veins are filled with secondary calcite. The meteorite is heavily fractured and contains shock melt veins.

Geochemistry: Low-Ca pyroxene: Fs59.4±0.5Wo2.6±0.4 (Fs58.3-60.0Wo2.2-3.3, n=13, FeO/MnO=26-28); Ca-pyroxene: Fs26.5±0.4Wo43.2±0.3 (Fs25.6-27.2Wo42.7-43.8, n=15, FeO/MnO=25-30); calcic plagioclase: An89.9±0.4 (An89.5-90.5, n=14)

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Tindouf, Algeria
Date:P 2020
Mass (g):736
Pieces:many
Class:Eucrite-mmict
Shock stage:moderate
Weathering grade:moderate
Ferrosilite (mol%):59.4; 26.5
Wollastonite (mol%):2.6; 43.2
Classifier:A. Greshake, MNB
Type spec mass (g):31.5
Type spec location:MNB
Main mass:anonymous
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 7385 approved meteorites from (Northwest Africa) (plus 1955 unapproved names)

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