天鹿铜矿床粉砂岩型铜矿石特征
Characteristic of silstone copper ore in Tianlu copper deposit
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摘要: 天鹿铜矿床是前陆盆地古生代海相砂页岩型铜矿,铜矿石主要为粉砂岩型,包括辉铜矿矿石、辉铜矿斑铜矿矿石、斑铜矿矿石、黄铜矿斑铜矿矿石、黄铜矿矿石、黄铁矿黄铜矿矿石6种自然类型。矿石结构主要为结晶结构和交代结构,矿石构造以浸染状为主。主矿层中的矿化沿岩层厚度具有明显的垂直分带性,从底部到顶板为:辉铜矿→斑铜矿→黄铜矿→黄铁矿,为典型的化学沉积成因铜的硫化物排列组合特征。上述特点与我国及国外海相砂页岩型铜矿一致。Abstract: Tianlu copper deposit which formed by foreland basin in Paleozic era is marine sandshale copper deposit,copper ore mainly is silstone type and in cludes six natural type,which are chalcocite ore,chalcocitebornite ore,bornite ore,chalcopyrite-bornite ore,chalcopyrite,pyrite-chalcopynite.Ore texture mainly is crystallzation texture and metasomatic texture.Ore structure are dominated by disseminate.Along thickness of strata,mineralization of master ore bed has obviously vertical zonality in the upward order of chalcocite→bornite→chalcopy rite→pyrite,It is indicated that typical arrangement assemblage feature of sulphide of sediment orogenic copper ore.Abovementioned cha racteristic is consistent to marine sand shale copper deposit in china and foreign.
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