闽北变质岩含矿性及其找矿前景的探讨

Ore-bearing Characters of the Metamorphic Rocks and Its Prospecting Targets in Northern Fujian

闽北变质岩地层中已发现的矿床(外生矿床除外)可归纳为三大类:1.以沉积-变质作用为主导控制因素的矿床;2.以混合岩化-花岗岩化为主导控制因素的矿床;3.以后期构造-岩浆作用为主导控制因素的矿床。提出了闽北地区金、银、锡、钽以及多金属矿存在两个不同特征的成矿系列,即变质-混合花岗岩成矿系列和同熔-重熔型岩浆花岗岩成矿系列。并对该区找矿前景进行探讨。

The mineral deposits found in the strata of metamorphic rocks in Northern Fujian, except for exogenetic ore deposits, can be divided into three types: (1) the deposits controlled by sidementation-metamorphism; (2) the deposits by migmatitization ; (3)the deposits by later tectonic-magmatism. The author concluded that for the deposits bearing Au, Ag, Sn and Ta and multimetal ores there are two different ore-forming series; the types of metamorphic-migmatic granite and syntectic-remelted granite. The paper also indicates the prospecting target in Northern Fujian.