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Northwest Africa 595
Basic information Name: Northwest Africa 595
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 595
Observed fall: No
Year found: 2001
Country: (Northwest Africa)
Mass:help 196 g
Classification
  history:
NHM Catalogue:  5th Edition  (2000)  Brachinite
Meteoritical Bulletin:  MB 86  (2002)  Brachinite
MetBase:  v. 7.1  (2006)  Brachinite
Recommended:  Brachinite    [explanation]

This is 1 of 46 approved meteorites classified as Brachinite.   [show all]
Search for other: Brachinites, Primitive achondrites
Writeuphelp
Writeup from MB 86:

Northwest Africa 595

Morocco

Purchased 2001 January

Primitive achondrite (brachinite)

One complete stone of a total weight of 196 g was purchased by Cott in Tucson, Arizona, in 2001 January.  Mineralogy and classification (P. Warren, UCLA): mineral mode, 80 vol% olivine, 10–15 vol% orthopyroxene, 5–10 vol% augite and minor chromite, traces include kamacite and Ni-rich metal, no plagioclase was found.  Mineral composition, olivine, Fo71–72 and FeO/MnO = 52 ± 6, orthopyroxene, En72–73Fs25–26Wo2.2 and FeO/MnO = 40 ± 7, augite, En45Fs10–11Wo44–45 and FeO/MnO = 32 ± 9, chromite, Cr/(Cr + Al) = 0.77, Mg/(Mg + Fe) = 0.25 and TiO2 = 1.1–1.4 wt%. Typical polygonal-granular texture with a notable alignment of more elongated grains; grain sizes of 0.5 to 1 mm, one exceptionally large grain of 3 mm was observed. Highly weathered, W3/4. Texture, mineral mode and mineral composition of mafic silicates and bulk chemical data are consistent with its classification as brachinite. Specimens: type specimen, 23 g, and thin section, UCLA; main mass, Cott.

Data from:
  MB86
  Table 6
  Line 23:
Date:1 Jan 2001
Mass (g):196
Pieces:1
Class:Brachinite
Institutions
   and collections
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
Cott: Michael Cottingham Meteorite Collection, P.O. Box 727, Silver City, NM 88062, United States (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 86, MAPS 37, A157-A184 (2002)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Labenne Meteorites   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Phil Schmitz   
Volker Heinrich   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 6781 approved meteorites from (Northwest Africa) (plus 2061 unapproved names)

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