晋东北刁泉银铜矿中碲化物类型及赋存特征

Study on the types and occurrence characteristics of telluride in Diaoquan silver-copper deposit in northeastern Shanxi Province

碲是稀散金属之一,具有很高的工业价值,同时具有较大的找矿勘探意义。刁泉银铜多金属矿床位于华北克拉通中部,太行山与五台山之间,矿床中富含碲化物。本文采用偏光显微镜观察与电子探针微区分析,运用成因矿物学的理论与方法对刁泉银铜矿中碲化物的类型、赋存特征以及晶体化学式进行研究,丰富和完善该地区碲的矿物学资料,为此类矿床的开发和研究提供一定的理论依据。通过电子探针成分分析与化学式计算得出该矿床的主要碲化物类型为碲银矿。研究发现刁泉银铜矿床中碲化物主要赋存于斑铜矿中。

Tellurium is one of the rare dispersed metals,and it is of high industrial value and great prospecting significance.The silver-copper polymetallic deposit in Diaoquan area is located in the central part of the North China Craton,between Taihang Shan Mountain and Mount Wutai,the deposit is rich in telluride.The mineralogical data of tellurium in Diaoquan Silver Copper Deposit are enriched and improved by means of polarizing microscope and electron probe microzone analysis.The theory and method of genetic mineralogy were used to study the type,occurrence characteristics and crystallochemical formula of telluride in Diaoquan silver-copper deposit,and to provide some theoretical basis for the development and research of such deposits.The main type of telluride in this deposit is hessite by the analysis of the composition of electron probe and the calculation of chemical formula.It is found that telluride in Diaoquan silver-copper deposit mainly occurs in bornite.