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Northwest Africa 4926
Basic information Name: Northwest Africa 4926
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4926
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 37 g
Classification
  history:
Recommended:  Diogenite-olivine    [explanation]

This is 1 of 15 approved meteorites classified as Diogenite-olivine.   [show all]
Search for other: Achondrites, Diogenites, and HED achondrites
Comments: Approved 11 Dec 2021
Writeuphelp
Writeup from MB 110:

Northwest Africa 4926 (NWA 4926)

(Northwest Africa)

Purchased: 2006

Classification: HED achondrite (Diogenite)

History: The meteorite was purchased from a local meteorite dealer in Erfoud, Morocco.

Physical characteristics: Light-grayish to orange coloured rock partly covered with fusion crust.

Petrography: The meteorite displays a light orange interior and is a fragmental breccia composed of up to 3.5 mm sized low Ca-pyroxene grains in fine-grained clastic, related matrix. It contains euhedral to subhedral compositionally weakly zoned olivine grains. Minor phases include calcic plagioclase, chromite, FeS, and metal.

Geochemistry: low-Ca pyroxene: Fs24.1±0.2Wo3.5±0.1 (Fs23.8-24.5Wo3.4-3.6, n=7, FeO/MnO=29-30); olivine: Fa26.4±1.0 (Fa25.4-28.5, n=7, FeO/MnO=44±2); calcic plagioclase: An86.6±2.6 (An82.7-90.4, n=7)

Classification: Diogenite, olivine-bearing

Data from:
  MB110
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2006
Mass (g):37
Pieces:1
Class:Diogenite
Shock stage:low
Weathering grade:moderate
Fayalite (mol%):26.4
Ferrosilite (mol%):24.1
Wollastonite (mol%):3.5
Classifier:A. Greshake, MNB
Type spec mass (g):7.8
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. 110, in preparation (2021)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
aranemac Photo added 19 Apr 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8402 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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