在东川铜矿的落雪、因民、汤丹矿床中,见有形如卵石、状如蝎子、铁饼和钢球般的硫化铜矿团块分布。在五十年代初地质勘探时期,人们对它多半采取回避态度;至六十年代初矿山生产建设时期,有的认为硫化铜矿团块系含铜热液沿围岩裂隙或洞裂充填交代的结果。继后,多数接受了本区铜矿属沉积变质成因的理论,并把 In the Dongchuan Copper Mine, snow fall, due to people, Tang Dan deposit, see the visible as pebbles, like scorpions, discus and ball-like copper sulfide ore clumps distribution. During the period of geologic exploration in the early 1950s, people mostly avoided it. During the period of mine production and construction at the beginning of the 1960s, some thought that the copper-bearing hydrothermal fluids in the copper sulphide ore blocks were confronted with fractures or fractures in the surrounding rock result. Following that, most accepted the theory of the genesis and deposition of copper deposits in this area