渗滤脉状矽卡岩成岩过程的计算机模拟

Computer Simulation of Rock-Forming Processes of Infiltration Skarns

用多相多组分平衡理论分析了个旧锡矿区渗滤脉状矽卡岩形成的机理,以该理论为基础设计的计算机程序模拟了这类矽卡岩脉的成岩过程。结果表明,花岗岩饱和热液成分不同,碳酸盐岩类型不同,通过模拟可以得到不同类型的矽卡岩及脉状矽卡岩的对称状矿物分带。

The mechanism of rock-forming processes of infiltration vein-like skarn in Gejiu tin deposit is an-alyzed using multi-phase and multi-component equilibrium theory. Based on that theory, some programs have been written in Fortran-77 programming language, and the rock-forming processes of infiltration vein-like skarn are simulated. The results show that different kinds of skarns can be formed by the simulation with different chemical compositions of hydrothermal fluid and different kinds of carbonate rocks, and that symmetrical zones of minerals in the infiltration vein-like skarns are also shown.