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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:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 8904 approved meteorites from (Northwest Africa) (plus 1871 unapproved names)

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