Bulletin of the Geological Society of Malaysia, Volume 11, Dec, 1979, pp. 315 – 321
1Companhia de Pesquisa de Recursos Minerais, Rio de Janeiro
2Empresa de Mineracao Aripuana Ltda, Sao Paulo
3Department of Geosciences, Univ. of Brasilia Hon. Research Conferee of NRC, Brazil
Abstract: Tin and gold mineralisations are considered in the context of their geological setting in an area in the Rondonia Tin Province of the Amazon Region. Mineral investigation methods are outlined and maps illustrating the distribution of some anomalous target areas are provided. Preliminary controls are indicated. A possible anomalous xenothermal type of deposit, mineralogically correlatable to areas of similar mineralisation, is suggested.