According to the electron probe analyses and other data , some conclusions have been reached as follows : the modes of occurrence of associated silver include minerals of stephanite , bromargyrite , ag - sb - tetrahedrite , electrum etc . , which occur as small grains among or between fe - mn minerals 利用电子探针等测试方法对锰矿石中伴生银的赋存状态进行研究，初步查明银主要是以脆银矿、溴角银矿、银锑黝铜矿、银金矿等矿物形式存在，呈微小颗粒状被包裹于铁锰矿物内或矿物间隙里。
