摘要
滇中地区的铅锌多金属矿床往往成群、成带分布于碳酸盐岩层中，矿体（矿石）与围岩在成矿元素组合方面具有继承性，硫和金属（铅、锌等）来自矿源层。矿体与围岩的δ３４Ｓ‰值变化范围为－３９．１‰－２０．６‰，以“重硫型”为主；矿石铅同位素以单阶段演化的正常铅为主，常含不同程度的放射性铅。成矿模式为：同生沉积（成岩）作用形成矿源层，后期改造（叠加）形成矿体。
The Pb-Zn polymetallic ore deposits in Central Yunnan are usually distributed as group or belt in the carbonate rock. There is a inheritance in the metallogenetic element assemblage between the ore body (ore) and the wall rock. And the Sand metal elements (Pb , Zn, etc. ) originate from the ore-origin bed. The δ34S‰ values of ore body and wall rock change in the range of -39. 1‰-20. 6‰, mainly as 'heavy S type'; The Pb isotope of ore mostly is the normal Pb of single-stage evolution and usually includes some radioactive Pb. The metallogenetic model is that the ore origin bed was formed by syngenetic sedimentation (diagenesis) and the ore body by the later reformation (superimposition).
出处
《云南地质》
1995年第2期119-130,共12页
Yunnan Geology
