内蒙古白云鄂博群金矿综合地质信息预测

Comprehensive Information Prediction of Gold Deposits in Baiyun’ebo Group,Inner Mongolia,China

白云鄂博群是内蒙古中西部稀土、铁、金等矿产的重要含矿层位,具有良好的成矿条件,在该层位发现铌、钽、铀、钍、钨、钼、锑、银、铜、铅、锌、锰等金属矿产30多种。在综合研究内蒙古白云鄂博地区地物化遥及其解译资料的基础上,提取了与金成矿密切相关的异常要素,建立了白云鄂博地区白云鄂博群层控型金矿矿床模型。在此基础上,利用基于GIS平台的证据权重法和矿床模型综合地质信息体积法对研究区进行了金矿的定位与定量预测,优选出57个最小预测区,预测资源量402 834kg。

Baiyun’ebo Group is an important ore-bearing strata in central-western of Inner Mongolia.It contains rare earth metals,iron,gold and other elements and has good ore-forming potentials.Mineral resources of more than 30 metallic elements,such as niobium,tantalum,uranium,thorium,tungsten,molybdenum,antimony,silver,copper,lead,zinc,manganese and so on have been discovered in the group.Through comprehensive study of geological,geophysical,geochemical,remote sensing data and their corresponding interpretating results,a stratabound gold deposit model of the Baiyun’ebo Group is established for gold deposits in Baiyun’ebo districts.A variety of varibles closely related to gold-mineralization have been selected.Based on GIS,sites of gold mineralization is forecasted using the weights of evidence approach and the amount of resources is estimated using the volumetric method of comprehensive geological information of the ore deposit model.57 smallest forecasted areas are delineated and 402 834 kg gold is predicted.