A method is proposed to determine free native silver and free silver sulphide in lead-zinc concentrate.
拟定了分离测定铅锌精矿中游离硫化银和游离自然银的方法。
The leaching solvents for the separation of silver sulfide and native silver were investigated in this test.
文中针对硫化矿物中硫化银与自然银的浸取溶剂及分离方法进行了探讨。
Silver minerals in this mine mostly occurred as native silver embedded in quartz and shaPed into grained, schistose or tree-like structure.
发现该矿银主要以自然银的形式存在，自然银多呈粒状、片状或树枝状嵌生在石英中。
It was also found that, besides native silver, there existed coPPer-bearing argentite which seemed to be an alternation Product through the replacing of native silver by late-formed copper sulfide.
银矿物除自然银外，还见有后期铜的硫化物交代自然银形成的含铜辉银矿。
Bighead and silver carp - both native to Asia - have been migrating toward the lakes since escaping from Deep South fish ponds and sewage treatment plants in the 1970s.
原产于亚洲的大头鲤鱼和银鲤鱼，20世纪70年代从南方鱼塘和污水处理厂逃逸以来，已经向五大湖扩散。
Gold mainly exists as gold minerals, including electrum, silver-bearing native gold.
金以矿物态为主，金矿物主要为银金矿、含银自然金。
Gold mainly exists as gold minerals, including electrum, silver-bearing native gold.
金以矿物态为主，金矿物主要为银金矿、含银自然金。
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