|Basic information||Name: Gujba|
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes
Year fell: 1984
Mass: 100 kg
This is 1 of 6 approved meteorites classified as CBa. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CB chondrites, CH-CB family, and Metal-rich meteorites
Writeup from MB 85:
Fell 1984 April 3, 18:30 local time
A conical meteorite fell in a corn field near the village of Bogga Dingare after a bright fireball was witnessed moving west to east and an explosion was heard. The local people hammered the meteorite into many pieces, and most of the material was dispersed. The original mass is unknown, although secondhand reports indicate that it had a volume of ~20 000 cm3, and thus a mass of ~100 kg. Material that almost certainly came from this fall has been sold in the last few years elsewhere in Nigeria, with claims that the specimens were new finds. A preliminary description of the meteorite appears in Islam and Ostaficzuk (1988). Description (L. Karwowski, USil, based on the original mass): contains metal nodules, 1.5–8 mm in diameter, and silicate nodules 1–15 mm in diameter with fan-like aggregates of pyroxene; 60% of nodules are metal. Description and classification (A. Rubin and G. Kallemeyn, UCLA, based on a 282 g fragment purchased in 2000 near the village of Gidan Wire in Kaduna state): consists of large metal nodules containing variable amounts of troilite, and cryptocrystalline silicate spheroids; silicates include pyroxene (Fs1–2Wo1–3) and rare olivine (Fa3); siderophile abundance pattern in metal is similar to that of Bencubbin; shock stage, S2; weathering grade, W0. Oxygen isotopes (R. Clayton, UChi): light-colored silicates, δ17O = -2.19·, δ18O = +0.53·; dark-colored silicates, δ17O = -1.78·, δ18O = +0.98·. Specimens: 12.2 kg, mostly disintegrated, UMaid; 815 g, MZ; type specimen, 64 g, UCLA; remainder of 282 g mass, Twelker.
UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011)
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011)
USil: Faculty of Earth Sciences, University of Silesia, Bedzinska 60, 41-200 Sosnowiec, Poland; Website (institutional address; updated 14 Jan 2017)
MZ: Aleja na Skarpie 20/26, 27 00-488 Warsaw, Poland, Poland (institutional address; updated 18 Jul 2015)
Twelker: Eric Twelker, P.O. Box 844, Port Townsend, WA 98368, United States; Website (private address; updated 1 Dec 2014)
UMaid: University of Maiduguri, Borno State, Nigeria (institutional address)
|References:||Published in Meteoritical Bulletin, no. 85, MAPS 36, A293-A322 (2001)|
This is 1 of 3 approved meteorites from Yobe, Nigeria
This is 1 of 18 approved meteorites from Nigeria
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