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Northwest Africa 8647
Basic information Name: Northwest Africa 8647
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8647
Observed fall: No
Year found: 2010
Country: (Northwest Africa)
Mass:help 326 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 224 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 6 Jan 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8647 (NWA 8647)

(Northwest Africa)

Purchased: 2010

Classification: HED achondrite (Eucrite, brecciated)

History: Numerous individuals up to several cm in size, all partly covered with fusion crust, were bought at a mineral market in Erfoud, Morocco.

Petrography: The meteorite is a breccia composed of basaltic lithologies and mineral fragments set into a fine-grained melt-rich matrix. Calcic plagioclase and exsolved pyroxene are dominant minerals; accessories include SiO2 polymorphs, chromite, and troilite. The rock contains abundant recrystallized shock melt.

Geochemistry: low-Ca pyroxene, Fs60±0.9Wo2.9±0.7 (Fs58.3-61.3Wo2.2-4.7, n=15, FeO/MnO=30-34); Ca-pyroxene, Fs26.3±1.1Wo43.5±0.4 (Fs23.5-27.2Wo42.9-44, n=15, FeO/MnO=29-35); calcic plagioclase, An90.5±0.7 (An89.5-91.5, n=15)

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2010
Mass (g):326
Pieces:Many
Class:Eucrite-br
Shock stage:high
Weathering grade:low
Classifier:A. Greshake, MNB
Type spec mass (g):20
Type spec location:MNB
Main mass:Marcin Cimala
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. 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 9368 approved meteorites from (Northwest Africa) (plus 1875 unapproved names)

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