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Northwest Africa 10869
Basic information Name: Northwest Africa 10869
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10869
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 228 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 22 Oct 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10869 (NWA 10869)

(Northwest Africa)

Purchased: June 2016

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was purchased in 2016 from a meteorite dealer at the mineral fair in St.Marie aux mines, France.

Physical characteristics: The individual lacks any fusion crust and shows a grayish interior.

Petrography: The meteorite is a breccia dominantly composed of coarse- and more fine-grained basaltic clasts and minor clastic matrix. Calcic plagioclase and exsolved pyroxenes are the dominant mineral phases and are up to 1 mm in size. Minor phases are FeS, chromite, ilmenite, SiO2 and metallic iron. The meteorite contains shock melt veins.

Geochemistry: low-Ca pyroxene: Fs60.8±0.6Wo2.6±0.4 (Fs60.0-61.9Wo2.0-3.6, n=15, FeO/MnO=30-32); Ca-pyroxene: Fs26.2±0.4Wo43.8±0.8 (Fs25.6-27.2Wo42.8-45.1, n=14, FeO/MnO=28-32); calcic plagioclase: An89.0±1.7 (An85.8-93.8, n=15)

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:St.Marie aux Mines, France
Date:P June 2016
Mass (g):228
Pieces:1
Class:Eucrite-br
Shock stage:moderate
Weathering grade:low
Ferrosilite (mol%):60.8; 26.2
Wollastonite (mol%):2.6; 43.8
Classifier:A. Greshake, MNB
Type spec mass (g):23.6
Type spec location:MNB
Main mass:Hanno Strufe
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
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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