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库布苏金矿床的三个金矿带均产于闪长玢岩和花岗闪长斑岩内。为了研究这些岩脉与金矿的成因关系 ,测定了含金石英脉中石英流体包裹体均一温度、成分、盐度和 H2 O的氢氧同位素 ,分析了含金石英脉和相关脉岩及围岩的稀土元素及微量元素。发现石英流体包裹体属有较高的均一温度、低盐度、富 CO2 的还原性流体 ,其阳离子组合为 Ca2 + >Na+ >K+或Na+ >K+ >Mg2 + 型 ,阴离子组合属 Cl- >SO42 - >F- 型 ,具变质流体特征 ;岩脉和含金石英脉的稀土元素及微量元素配分模式及组合特征差别显著 ,表明二者间不具物质成分的联系。依据上述结果和矿床地质特征推测 :该区成脉岩浆与变质成矿流体的上升受同一构造控制 ,以及岩脉相对于围岩的脆性特征是造成岩脉与金矿空间关系密切的根本原因
The three gold belts of the Ku Bu Su gold deposit are both produced in diorite and granodiorite porphyries. In order to study the genetic relationship between these dikes and gold deposits, the hydrogen and oxygen isotopes of homogenization temperature, composition, salinity and H2 O of quartz fluid inclusions in gold-bearing quartz veins were determined. The gold-bearing quartz veins and related veins Rare earth elements and trace elements in rocks. It is found that quartz fluid inclusions have high homogenization temperature, low salinity and CO2-rich reductive fluid, and the cation combination is Ca2 +> Na +> K + or Na +> K +> Mg2 +, and the anion combination is Cl-> SO42 -> F-type, metamorphic fluid characteristics; rare earth elements and trace elements in the veins and gold-bearing quartz veins pattern and combination characteristics of significant differences between the two, indicating that there is no material composition between the two contacts. Based on the above results and the geological characteristics of the deposit, it is inferred that the uplifting of the magma and the metamorphic ore-forming fluid in the area is controlled by the same structure and the brittleness of the dikes relative to the surrounding rock is the root cause of the close spatial relationship between the dikes and the gold deposit