The copper deposits are mainly located in the eastern part of the quartz diorite rock body in the Ermi Mesozoic volcanic basin.

• 二密铜矿床主要位于燕山期石英闪长岩体东段，矿体分布在石英闪长岩体内外接触带上，以脉状、细脉状、细脉浸染状、浸染状矿体为主，成群成带分布。