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Northwest Africa 8194
Basic information Name: Northwest Africa 8194
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8194
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 158 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 391 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 28 Feb 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8194 (NWA 8194)

(Northwest Africa)

Purchased: 10/2010

Classification: HED achondrite (Eucrite, polymict)

Petrography: The rock displays a light grayish interior and is composed of up to several mm-sized basaltic, melt, and mineral clasts set into a fine-grained clastic matrix. Mineral clasts and dominant matrix minerals are calcic plagioclase and pyroxenes with exsolution lamellae. Accessory phases include chromite, SiO2 polymorphs, and troilite. Diogenitic component is about 5%.

Geochemistry: Low-Ca pyroxene: Fs47.3±9Wo5.5±2.1 (Fs32.7-57.5Wo2.6-8.7, n=21, FeO/MnO=26-32); Ca-pyroxene: Fs21.4±0.2Wo43.5±0.3 (Fs21.1-21.7Wo42.9-43.8, n=10, FeO/MnO=27-30); calcic plagioclase: An91.5±2.3 (An88.4-93.9, n=14)

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Munich, Germany
Date:P 10/2010
Mass (g):158
Pieces:1
Class:Eucrite-pmict
Shock stage:moderate
Weathering grade:moderate
Ferrosilite (mol%):32.7-57.5, 21.1-21.7
Wollastonite (mol%):2.6-8.7, 42.9-43.8
Classifier:A. Greshake, MNB
Type spec mass (g):22.1
Type spec location:MNB
Main mass:Jürgen Nauber (JNMC)
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
JNMC: jnmczurich, P.O. Box 208, CH-8155 Niederhasli, Switzerland; Website (private address; updated 4 Feb 2014)
Catalogs:
References: Published in Meteoritical Bulletin, no. 104, MAPS 52, 2284, Octover 2017, http://onlinelibrary.wiley.com/doi/10.1111/maps.12930/full
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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