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Northwest Africa 5892
Basic information Name: Northwest Africa 5892
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 5892
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass:help 530 g
Classification
  history:
Recommended:  Brachinite    [explanation]

This is 1 of 55 approved meteorites classified as Brachinite.   [show all]
Search for other: Brachinites, Primitive achondrites
Comments: Approved 26 Mar 2022
Writeuphelp
Writeup from MB 111:

Northwest Africa 5892 (NWA 5892)

(Northwest Africa)

Purchased: 2009

Classification: Primitive achondrite (Brachinite)

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

Physical characteristics: Brownish fragment with minor fusion crust.

Petrography: The meteorite shows an equilibrated texture of 50 to 400 µm sized olivine and subordinate low-Ca pyroxene grains that often meet at 120° grain boundaries. Minor phases include troilite and FeNi metal ocurring interstitial between and as blebby inclusions in silicate grains. Grain boundaries are often decorated with seondary Fe-oxides and -hydroxides. No plagioclase was found.

Geochemistry: olivine: Fa28.7±0.3 (Fa28.1-29.0, FeO/MnO=70±8, n=7); Ca-pyroxene: Fs9.4±0.1Wo43.9±0.2 (Fs9.2-9.6Wo43.6-44.3, FeO/MnO=33±3, n=7)

Data from:
  MB111
  Table 0
  Line 0:
Place of purchase:Erfoud, Morocco
Date:P 2009
Mass (g):530.3
Pieces:1
Class:Brachinite
Shock stage:S1
Weathering grade:moderate
Fayalite (mol%):28.7
Ferrosilite (mol%):9.4
Wollastonite (mol%):43.9
Classifier:A. Greshake, MNB
Type spec mass (g):24
Type spec location:MNB
Main mass:Hanno Strufe
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. 111, in preparation (2022)
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)
Achim Sven Faforke Photo added 19 Apr 2022
Dirk Hohmann Photo added 19 Apr 2022
Photo added 19 Apr 2022
Konrad Andrä Photo added 19 Apr 2022
Photo added 19 Apr 2022
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8495 approved meteorites from (Northwest Africa) (plus 1899 unapproved names)

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