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Northwest Africa 8768
Basic information Name: Northwest Africa 8768
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 8768
Observed fall: No
Year found: 2014
Country: (Northwest Africa)
Mass:help 720 g
Classification
  history:
Meteoritical Bulletin:  MB 104  (2015)  Eucrite-br
Recommended:  Eucrite-br    [explanation]

This is 1 of 185 approved meteorites classified as Eucrite-br.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 13 Feb 2015
Writeuphelp
Writeup from MB 104:

Northwest Africa 8768 (NWA 8768)

(Northwest Africa)

Purchased: 2014

Classification: HED achondrite (Eucrite, brecciated)

History: The meteorite was bought in 2014 from a meteorite dealer in Rissani, Morocco.

Petrography: The meteorite is a fragmental breccia with eucritic clasts set into a fine-grained clastic matrix with abundant shock veins. Dominant minerals are exsolved pigeonite (with variable red-brown staining) and calcic plagioclase; minor phases are silica polymorphs, ilmenite, chromite, and troilite.

Geochemistry: low-Ca pyroxene: Fs59±0.9Wo4±1.1 (Fs58.1-60.9Wo2.3-6, n=17, FeO/MnO=32-37); Ca-pyroxene: Fs27.3±1.6Wo42.9±1.5 (Fs25.9-31.1Wo39.7-44.4, n=16, FeO/MnO=33-38); calcic plagioclase: An89.1±1.1 (An87.2-90.7, n=20)

Data from:
  MB104
  Table 0
  Line 0:
Place of purchase:Rissani, Morocco
Date:P 2014
Mass (g):720
Pieces:1
Class:Eucrite-br
Shock stage:moderate
Weathering grade:moderate
Ferrosilite (mol%):59; 27.3
Wollastonite (mol%):4; 42.9
Classifier:A. Greshake, MNB
Type spec mass (g):21.6
Type spec location:MNB
Main mass:Harald Stehlik
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Stehlik: Harald Stehlik, 1220 Wien, Austria (private address)
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 7752 approved meteorites from (Northwest Africa) (plus 1971 unapproved names)

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