Rb-Sr Systematics of Mississippi Valley-Type Ore Deposits-- Sulfides, Gangue Minerals, and Fluid Inclusions

PI计划研究两个密西西比河谷型矿床(Viburnum Trend和Tri-State地区)的脉石和矿石矿物及其流体包裹体的Rb-Sr同位素体系。他们已经开发出分析小样本的技术，这使得这样的研究变得可行。因此，将研究硫化物中的锶同位素和铅、S同位素，与成矿有关的伴生白云岩洞穴中的痕量金属和碳、氧同位素，以及矿石和脉石矿物中流体包裹体的化学分析，以加深对(1)这些矿床和(2)形成这些矿床的流体的性质和运移史的认识。

The PI's plan to study Rb-Sr isotopic systematics of gangue and ore minerals and their fluid inclusions from two Mississippi Valley-type ore deposits (Viburnum Trend and Tri-State districts). They have developed techniques for analyzing small samples, which now makes such a study feasible. Thus Sr isotopes will be studied along with Pb and S isotopes in Sulfides, trace metal and C and O isotopes in associated dolomite vug-fills related to mineralization, and chemical analyses of fluid inclusions in both ore and gangue minerals to enhance understanding of (1) these ore deposits and (2) the nature and transport history of the fluids from which they formed.