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Northwest Africa 6828
Basic information Name: Northwest Africa 6828
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 6828
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 47 g
Classification
  history:
Meteoritical Bulletin:  MB 102  (2013)  R3-6
Recommended:  R3-6    [explanation]

This is 1 of 34 approved meteorites classified as R3-6.   [show all]
Search for other: Rumuruti chondrites, Rumuruti chondrites (type 3)
Comments: Approved 10 Dec 2013
Writeuphelp
Writeup from MB 102:

Northwest Africa 6828 (NWA 6828)

(Northwest Africa)

Purchased: 2009

Classification: Rumuruti chondrite (R3-6)

Petrography: (A. Greshake, MNB) Breccia displaying a characteristic light-dark structure with heterogeneously distributed lithic fragments embedded in a fine-grained clastic matrix. The thin section studied contains about 20 vol% mostly angular clasts. R-type clasts are of type 3-6, the clastic matrix of type 3. Dark fragments are melt clasts. Opaque phases are chromite and FeNi-sulfides; metallic FeNi is very rare.

Geochemistry: Olivine in equilibrated lithologies: Fa37.8; olivine in unequilibrated lithologies: Fa0.3-57.8; low-Ca pyroxene in equilibrated lithologies: Fs25.2Wo1.6; low-Ca pyroxene in non-equilibrated lithologies: Fs2.8-28.8Wo0.3-4.1; olivine contains up to 0.14 wt% NiO.

Data from:
  MB102
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2009
Mass (g):47
Pieces:3
Class:R3-6
Shock stage:S1
Weathering grade:W0/1
Fayalite (mol%):37.8; 0.3-57.8
Ferrosilite (mol%):25.2; 2.8-28.8
Wollastonite (mol%):1.6; 0.3-4.1
Classifier:A. Greshake, MNB
Type spec mass (g):9.5
Type spec location:MNB
Main mass:Stefan Ralew
Comments:Submitted by Ansgar Greshake
Institutions
   and collections		 MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
Ralew: Stefan Ralew, Kunibertstraße 29, 12524 Berlin, Germany; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015
Find references in NASA ADS:
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Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9699 approved meteorites from (Northwest Africa) (plus 1854 unapproved names)
Also see:
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Revision
  history:
  This lists important revisions made to data for this record.

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