The result is as follows : ( 1 ) cu - ag polymetallic mineralization field lied in the north of lanping basine between jinshajiang fissure and lancangjiang fissure , whose internal mid - axis fissures and different subfissures formed the fissure system of the basin . they were the transport system of the ore - forming fluid , which was important to the formation of copper - silver polymetllic deposits
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