Metallogeny of tin; magmatic differentiation versus geochemical heritage

Abstract

TiO 2 -Sn and Rb/Sr-Sn variation diagrams for granitic fractionation series from various tin and non-tin provinces do not support the concept of geochemical heredity of tin, i.e., the assumption of a primary crustal Sn anomaly in tin provinces. The controlling factor for the generation of tin granites is a special bulk distribution coefficient of Sn, probably dependent on the oxygen fugacity of the melt.