黑龙江省团结沟金矿床原生晕分带模式

研究了火山热液金矿床原生晕成晕元素、成晕性质、分带序列与分带结构。根据露天采场岩石地球化学调查资料建立元素分带序列和轴向分带模型。首先按元素成晕性质与成晕相对时间编排子序列;之后联结三个子序列间空间关系最紧密元素(Cr—K—Au)组成总序列。空间上各单元素晕,包括负晕与正晕,在原生晕总体范围呈现规律性排列:K正晕位于核部;Bi、Mo、W晕重叠其下部;Ag、Au、AS、Sb)晕重叠其上部。Mn负晕套合K正晕处围;Mn正晕镶嵌Mn负晕边部Na晕覆盖整个原生晕。

THE ZONING PATTERN OF PRIMARY HALO IN TUANJIEGOU GOLD DEPOSIT,HEILONGJIANG PROVINCE

This paper deals with the halo-forming elements,halo-forming nature,zoning sequence and zonal texture of the low-moderate-temperature volcanic hydrothermal gold deposit. The element zoning sequence and axial zoning pattern were sit up on the basis of petral-geochemical investigation of opencast quarry. First of all,sub-sequences will be designed due to the nature of the halo-forming elements and the halo-forming time of these elements. Then connects those spatially relevant elements(Cr-K-Au)of three sub-sequences to assembly the general sequence. Within the extent of primary halo,the single elemental halo,including positive halo and negative halo.appears to be regularly arranged in spatial,normally with K positive halo in the centre(core) ,Bi,Mo,W halo overlapped on its lower part;and Ag,Au,As,Sb halo overlapped on its upper part. The negative halo of Mn was lapped on the K halo and developed toward the tail,but the positive Mn halo was lapped on the front belt of its own negative halo. The negative halo of Na covers all the primary halo.