河南桐柏下黄竹园金矿床地球化学特征研究

下黄竹园金矿是老湾金矿成矿带的重要组成部分,文章通过对地层各组段和主要岩石类型中微量元素地球化学参数特征,以及异常元素空间分布、异常浓度分带、分带序列、元素对比值的研究,表明成矿元素含量变化与地层层序、岩石类型密切相关.龟山岩组二云石英片岩是金矿体的直接赋矿围岩,与斜长角闪片岩共同构成矿源层.根据异常元素组份分带、垂向分带序列和不同标高元素对比值的研究,建立了地球化学评价指标,为矿床深部及外围找矿提供了地球化学依据.

GEOCHEMICAL CHARACTERISTICS OF XIAHUANGZHUYUAN GOLD DEPOSIT AT TONGBAI COUNTY, HENAN PROVINCE

Xiahuangzhuyuan gold deposit is an important component in the Laowan gold ore belt. Based on the study on the geochemical parameters of rare elements in different formations and main rocks, space distribution and concentration zoning of anomaly elements, anomaly zoning sequences and ratios of elements, it is indicated that metallogenic elements and their content variations are closely related to stratigraphic sequences and rock types. Two - mica quartz schist of Guishan formation is the direct host country rocks, and it makes up source bed with plagioclase amphibole schist. According to zoning of anomaly element components, vertical zoning sequences and ratios of elements on different elevations, geochemical evaluation indicators are established, and can provide geochemical basis for ore prospecting in the deep and the periphery of the deposit.