河南熊耳山沙沟银铅锌矿床中硫化物和银矿物的矿物学特征及其意义

河南熊耳山沙沟矿床是新探明的一个大型银铅锌矿床。文章首次对其矿石矿物进行了系统的研究,通过对大量矿石光薄片观察、等离子质谱和电子探针分析,表明具有工业意义的硫化物主要有方铅矿、贫铁闪锌矿、黄铜矿,银矿物主要有自然银、深红银矿、辉银矿、硫锑铜银矿、含银黝铜矿,它们与硫化物共生,多沿方铅矿、贫铁闪锌矿等颗粒间或者裂隙产出。这些研究结果不仅有助于了解矿化作用过程,而且为矿床评价、组分综合利用和选冶提供重要依据。

Characteristics of sulfide and silver minerals in Shagou silver-lead-zinc deposit of Xiong'er Shan, Henan Province, and their significance

The Shagou ore deposit is a large-size silver-lead-zinc deposit in west Henan Province. Based on a systematic study of a considerable number of polished ore sections as well as ICP-MS and electron microprobe analyses, the authors have found that the main sulfide minerals include galena, iron-poor sphalerite and chalcopyrite, whereas silver minerals are composed chiefly of native silver, pyrargyrite, argentite, polybasite, and argentiferous freibergite. Associated with sulfides, these silver-bearing minerals occur in cleavages, fissures or intergranular space of galena. The data obtained by the authors are of great significance in understanding the ore-forming process, and also provide important information for integrated evaluation of the deposit and for ore dressing and smelting.