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Northwest Africa 13027
Basic information Name: Northwest Africa 13027
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13027
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 395 g
Classification
  history:
Recommended:  Eucrite    [explanation]

This is 1 of 449 approved meteorites (plus 1 unapproved name) classified as Eucrite.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 1 Jan 2020
Writeuphelp
Writeup from MB 109:

Northwest Africa 13027 (NWA 13027)

(Northwest Africa)

Purchased: 2019

Classification: HED achondrite (Eucrite)

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

Physical characteristics: Dark greyish rock with some fusion crust.

Petrography: Coarse-grained monomict basaltic breccia predominantly composed of exsolved pyroxene and calcic plagioclase with average grains sizes of about 300 μm (up to 700 μm). Minor phases include ilmenite, chromite, and barite; no metallic iron has been detected. The meteorite contains shock melt veins.

Geochemistry: low-Ca pyroxene: Fs58.7±1.3Wo4.2±1.8 (Fs56.3-61.0Wo2.2-8.0, FeO/MnO=29-32, n=14); Ca-pyroxene: Fs27.0±1.9Wo42.4±2.0 (Fs25.1-32.0Wo37.0-44.4, FeO/MnO=27-32, n=16); calcic plagioclase: An92.0±1.0 (An90.3-93.0, n=15)

Data from:
  MB109
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2019
Mass (g):395
Pieces:1
Class:Eucrite
Shock stage:moderate
Weathering grade:moderate
Ferrosilite (mol%):58.7; 27.0
Wollastonite (mol%):4.2; 42.4
Classifier:A. Greshake, MNB
Type spec mass (g):22.9
Type spec location:MNB
Main mass:Harald Stehlik
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7100 approved meteorites from (Northwest Africa) (plus 2005 unapproved names)

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