格尔珂金矿大水矿区地质特征及找矿标志  

作　　者：孙保平[1] 潘振兴[1] 田战武[1] 申文环[1] 

机构地区：[1]长安大学资源学院,西安710054

出　　处：《内蒙古石油化工》2007年第1期128-130,共3页Inner Mongolia Petrochemical Industry

摘　　要：格尔珂金矿属大型、超大型的低温热液矿床,其绝大部分的产量和储量都集中在大水矿区。大水矿区的矿体赋存于中三叠统马热松多组的一套灰岩、白云质灰岩中,主要产在地层与岩体的接触部位。矿石的主要类型有硅化赤(褐)铁矿化灰岩型、硅化赤(褐)铁矿化花岗岩型和硅化赤(褐)铁矿化角砾岩型。成矿作用往往伴随着各种热液蚀变,因此,硅化、赤(褐)铁矿化、碳酸盐化等成为最重要的找矿标志。另外,岩体及控制岩体的构造等也是非常重要的标志。The Ge＇erke gold deposit is a large, overlarge epithermal ore deposit, and most of its output and reserve are concentrated in the Dashui gold field. The ore bodies of the Dashui gold field are produced in a series of limestone and dolomitic limestone which belong to the maresongduo group of the middle-Triassic system, and they mainly lie in the contact area of strata and rock bodies. The types of ore mainly are silieated hematitizated （ferritizated） limestone, silicated hematitizated （ferritizated） granite, silicated hematitizated （ferritizated） breccia. Ore-forming process is followed by kinds of hydrothermal alteration, so silication, hematitization （ferritization） and carbonation become the most important ore-hunting indicator. Besides, rock bodies and structure which control the rock bodies are very important clues for prospecting.

关 键 词：大水金矿区 找矿标志 热液蚀变 角砾岩 

分 类 号：P618.51[天文地球—矿床学]