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Gao-Guenie (b)
Basic information Name: Gao-Guenie (b)
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2002
Country: Burkina Faso
Mass:help 344 g
Meteoritical Bulletin:  MB 88  (2004)  CR
MetBase:  v. 7.1  (2006)  CR
Recommended:  CR    [explanation]

This is 1 of 14 approved meteorites classified as CR.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), and CR chondrites
Writeup from MB 88:

Gao-Guenie (b)


Found 2002,  August 15

Carbonaceous chondrite (CR)

Two stony fragments of 314.5 and 29.5 g, fitting together, were recognised by E. Twelker while examining a parcel of meteorites purchased from Burkina-Faso which, according to the vendor, were found in the Gao-Guenie strewn-field. Mineralogy and classification (A. N. Krot, UH): Abundant large, metal-rich porphyritic olivine, olivine-pyroxene and pyroxene type I chondrules (Fa 3.1±1.7, n = 20; Fs2.7±1.3, n = 18); many chondrules are layered and surrounded by silica-rich igneous rims (Krot et al., 2003). Type II chondrules and chondrules of non-porphyritic textures are rare. Anorthite-rich chondrules (Krot and Keil, 2002) are rather common. Refractory inclusions are rare and include amoeboid olivine aggregates (Fa0.6±0.6, n = 36), and melilite-rich CAIs; melilite is commonly replaced by anorthite. Neither chondrules nor refractory inclusions show evidence for alteration. The observed characteristics of the meteorite suggest that it is a CR chondrite. Shock stage is S1. Specimens: type specimen 20 g, UH, main mass, Twelker.

   and collections
UH: Hawai'i Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawai'i, 2525 Correa Road, Honolulu, HI 96822, United States (institutional address; updated 25 Oct 2011)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)
Search for this meteorite in the Natural History Museum collection (U.K.):   
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References: Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
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Photos from the Encyclopedia of Meteorites:
Eric Twelker      
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Gerald Armstrong   

Burkina Faso
     Recommended::   (11° 39'N, 2° 11'W)

     This is 1 of 2 approved meteorites from Sissili, Burkina Faso
     This is 1 of 10 approved meteorites from Burkina Faso
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