陕西驾鹿金矿床地质特征及成因探讨

驾鹿金矿床是小秦岭金矿带中一个比较特殊的矿床类型，产于古老韧性剪切带中，围岩蚀变强烈而广泛，尤其是成脉前的钾长石化。蚀变带及其中的石英脉控制了金矿体的产出，矿床属蚀变岩型金矿，成矿时代为燕山晚期．本文在论述矿床地质特征的基础上，通过稳定同位素研究，认为燕山期构造热事件是成矿的主导控制因素，成矿溶液来自大气降水，成矿物质则部分来自太华群，部分来自上覆中元古界高山河组，矿床成因属大气降水热液矿床．

GEOLOGICAL CHARACTERISTICS AND GENESISAPPROACH OF THE JIALU GOLD DEPOSITIN SHAANXI PROVINCE

The Jialu gold dePOsit is a special type in the Xiaoqinling gold dePOsit belts. It occurs in an ancient ductileshear belt,and its wall rock alteration is quite intense and extensive,and espeially POtassium feldsparizationpreceded the milky white quartz veins. The alteration zone and quartz veins in them control the occurence ofthe gold ore bodies. The deposit belongs to the altered rock tin,which was formed during the late Yanshanian period.The geological characteristics of the deposit is discribed in this paper,and with the stydy of the stableisotope it is considered that the Yanshanian tectonic-heat event is a leading factor in formation of the deposit,that the ore-forming solution was originated from the meteoric water,and that the materials derived partiallyfrom the Archaean Taihua Group and partially from the overlving Middle Proterozoic erathem Gaoshanhe formation. The dePOsit genesis belongs to the meteoric water hydrothermal type.