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Northwest Africa 10871
Basic information Name: Northwest Africa 10871
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 10871
Observed fall: No
Year found: 2016
Country: (Northwest Africa)
Mass:help 27.7 g
Classification
  history:
Meteoritical Bulletin:  MB 105  (2016)  Eucrite-pmict
Recommended:  Eucrite-pmict    [explanation]

This is 1 of 344 approved meteorites classified as Eucrite-pmict.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 27 Oct 2016
Writeuphelp
Writeup from MB 105:

Northwest Africa 10871 (NWA 10871)

(Northwest Africa)

Purchased: June 2016

Classification: HED achondrite (Eucrite, polymict)

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 sand-colored interior.

Petrography: The meteorite is a brecciated eucrite composed of up to 5 mm sized basaltic and melt clasts set into abundant, fine-grained, clastic matrix. Dominant minerals in basaltic clasts and matrix are exsolved pyroxene and calcic plagioclase grains of highly variable grain size, ranging from about 10 to 500 μm. Accessory minerals include chromite, FeS, silica and metallic iron.

Geochemistry: low-Ca pyroxene: Fs41.4±11.6Wo3.3±1.0 (Fs18.4-58.7Wo1.6-4.8, n=19, FeO/MnO=27-44); Ca-pyroxene: Fs27.0±3.7Wo41.0±1.3 (Fs14.8-29.6Wo39.3-44.3, n=13, FeO/MnO=25-33); calcic plagioclase: An88.7±7.0 (An71.6-93.8, n=15)

Data from:
  MB105
  Table 0
  Line 0:
Place of purchase:St.Marie aux Mines, France
Date:P June 2016
Mass (g):27.7
Pieces:1
Class:Eucrite-pmict
Shock stage:low
Weathering grade:moderate
Ferrosilite (mol%):41.4; 27.0
Wollastonite (mol%):3.3; 41.0
Classifier:A. Greshake, MNB
Type spec mass (g):5.8
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
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 7101 approved meteorites from (Northwest Africa) (plus 2004 unapproved names)

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