广东大宝山多金属矿床外围硅钙面控矿特征研究及其找矿意义

Study on the Ore Controlling Characteristics of Silico Calcium Surface around Dabaoshan Polymetallic Deposit in Guangdong Province and Its Prospecting Significance

大宝山多金属矿床是我国最重要矿床之一,自上世纪50年代末始,众多地质工作者对大宝山矿区进行了研究,关于区内灰岩地层中铜铅锌矿床的成因众说纷纭,主要存在以下五种观点:岩浆热液成因、斑岩成因,层控成因、火山-次火山岩成因、复合成因。经过研究,认为该矿床大部分铜铅锌矿体并非受层位控制,而是受硅钙面控制,矿床应属于受硅钙面控制的岩浆中后期中低温热液矿床,以期待对该矿床的成矿理论和边深部找矿提供有价值的参考。

Dabaoshan Polymetallic deposit is one of the important deposits in China.There are still five statements about the knowledge of the copper lead-zinc deposit genesis,they are respectively:Magmatic hydrothermal genesis,porphyry genesis,the stratabound genesis,Volcano subvolcano rocks genesis,Compound genesis.Our studies indicate that the surrounding and deep areas of Dabaoshan copper lead-zinc deposit is controlled by the Silicon-Calcium Surface rather than by the strara.This deposit is a post magmatic mesothermal epithermal and Silicon-Calcium Surface controlled deposit.It is expected to provide valuable reference for the metallogenic theory and deep side prospecting of the deposit.