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| Bilanga | |||||||||||||||||||||||||||||||||||||||||||||||||
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| Basic information | Name: Bilanga This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: Yes Year fell: 1999 Country: Burkina Faso Mass:  25 kg | ||||||||||||||||||||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 545 approved meteorites classified as Diogenite. [show all] Search for other: Achondrites, Diogenites, and HED achondrites | ||||||||||||||||||||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 84:
Bilanga Bilanga, Burkina-Faso Fell 1999 October 27, 10:30 local time Achondrite (diogenite) After a widely witnessed shower, at least 25 kg of meteorites with fresh black fusion crust were collected, comprising many stones. Pieces are reported to have fallen in the villages of Bilanga-Yanga and Gomponsago (coordinates above apply to the latter). Classification and mineralogy (A. Bischoff, Mün): a diogenitic breccia; Ca-poor pyroxene, Fs19–22, mean Fs20.5; plagioclase, An75–83; Ca-rich pyroxene is rare, one grain has En46.4Fs6.3Wo47.4. Oxygen isotopes (R. Clayton, UChi): δ18O = +3.41‰, δ17O = +1.35‰. Specimens: 7.5 kg, Casper; 4 kg, Heinlein; type specimen, 8 g, Mün; 25 g, NHM; 20 g, TCU; 80 g, Frei; 600 g, SI. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Plots: | O isotopes: | ||||||||||||||||||||||||||||||||||||||||||||||||
| Institutions and collections |
Frei: Universität Freiburg, Mineralogisch-Petrographisches Institut, Albertstrasse 23b, D-79104 Freiburg, Germany (institutional address) NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; Website (institutional address; updated 9 Dec 2011) SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012) TCU: Oscar E. Monnig Collection, Department of Geology, Texas Christian University, Ft. Worth, TX 76129, United States; Website (institutional address; updated 24 Feb 2012) UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011) Casper: Michael I. Casper, Meteorites, Inc., P.O. Drawer J, Ithaca, NY 14851, United States; Website (private address) Heinlein: Dieter Heinlein, Lilienstrasse 3, 86156 Augsburg, Germany; Website (private address) Mün: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012) |
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| References: | Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000)
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Geography:
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Statistics: This is 1 of 2 approved meteorites from Gnagna, Burkina Faso This is 1 of 10 approved meteorites from Burkina Faso | ||||||||||||||||||||||||||||||||||||||||||||||||
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