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Northwest Africa 10475
Basic information Name: Northwest Africa 10475
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10475
Observed fall: No
Year found: 2015
Country: (Northwest Africa)
Mass:help 46 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 179 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 24 Jan 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10475 (NWA 10475)

(Northwest Africa)

Purchased: 2015

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was purchased from the Moroccan meteorite dealer Abdelfattah.

Physical characteristics: A small individual partly covered with fusion crust was recovered from the north-African Sahara.

Petrography: The meteorite is a breccia composed of lithic and mineral clasts set into a fine-grained clastic matrix. Lithic clasts are dominantly basaltic and impact melt, mineral clasts include exsolved pyroxene and feldspar grains. Accessories are chromite, pyrrhotite, and silica. Some calcite weathering veins are present.

Geochemistry: low-Ca pyroxene: Fs45.1±16.7 (Fs25.8-63.5WoWo2.7±0.8, n=20, FeO/MnO=28-32); Ca-pyroxene: Fs27.2±5.5Wo40.1±4.6 (Fs19.2-39.6Wo26.6-44.3, n=16, FeO/MnO=25-36); calcic plagioclase: An88.4±3.1 (An71.7-92.9, n=42)

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:Agadir, Morocco
Date:P 2015
Mass (g):46
Pieces:1
Class:Eucrite-br
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):45.1; 27.2
Wollastonite (mol%):2.7; 40.1
Classifier:A. Greshake, MNB
Type spec mass (g):9.2
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
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. 105, MAPS 52, 2411, September 2017. http://onlinelibrary.wiley.com/doi/10.1111/maps.12944/full
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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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