Sn-polymetallic deposits associated with proterozoic rapakivi granites from Rondônia Tin Province and Itu Rapakivi Province, Brazil - Bettencourt, Jorge Silva; Leite Junior, Washington Barbosa; Goraieb, Claudio Luiz; Sparrenberger, Irena; Bello, Rosa Maria da Silveira; Payolla, Bruno Leonelo (International Symposium in Honor of Professor Ilmari Haapala, 2003)