At least 16 stones, the largest weighing 2.5kg, fell 60 km N of the town of Leo, near the Upper Volta-Ghana border, reported, Met. Bull., 1967, (39), Meteoritics, 1970, 5, p.91. Analysis, olivine Fa18, B.Mason, GCA, 1967, 31, p.1100. Classification, A.L.Graham et al., Cat. Met. Software, 1992. Find circumstances, strewn field, W.Walton, Meteorite!, Nov. 1996, p.8. Noble gas data, shock classification, pairing with Guenie and Souma very likely based on noble gas isotope concentrations and petrography, J.Otto et al., MAPS, 1996, 31, p.A103 (abs.). Certainly identical with Guenie, M.Bourot-Denise et al., MAPS, 1998, 33, p.A181. The Nomenclature Committee has decided that a new, collective name, Gao-Guenie, will be bestowed upon all meteorites formerly identified as either Gao (Upper Volta) or Guenie, J.N.Grossman, Met. Bull. 83, MAPS, 1999, 34, p.A169. For details and references on Guenie, see separate entry under Guenie. Fe and Zn contents of olivines and pyroxenes, W.Klöck et al., MAPS, 1999, 34, p.A65 (abs.). Determination of grain density, L.B.Moore et al., LPSC, 1999, 30, abs. #1128. Bidirectional reflectance, N.Tomita and A.M.Nakamura, LPSC, 2002, 33, abs. #1100. Magnetic susceptibility, P.Rochette et al., MAPS, 2003, 38, p.251. Impact disruption experiments, G.J.Flynn and D.D.Durda, LPSC, 2004, 35, abs. #1072.