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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 17 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 Gattacceca J., McCubbin F.M., Grossman J., Bouvier A., Chabot N.L., D'Orazio M., Goodrich C., Greshake A., Gross J., Komatsu M., Miao B., and Schrader D. (2022) The Meteoritical Bulletin, No. 110. Meteorit. Planet. Sci. 1-4
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Photos:
CreditPhotos
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
aranemac Photo added 20 Oct 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8777 approved meteorites from (Northwest Africa) (plus 1879 unapproved names)

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