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| Gao-Guenie (b) | |||||||||||||
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| 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:  344 g | ||||||||||||
| Classification history: |
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 |
Writeup from MB 88:
Gao-Guenie (b) Burkina-Faso 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. | ||||||||||||
| Institutions 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) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 88, MAPS 39, A215-A272 (2004)
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Geography:
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Statistics: 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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