黑龙江老柞山金矿成矿规律及深部找矿探讨

老柞山金矿田已发现岩金矿床6处,分布在东、中、西3个矿带上。矿体受韧性剪切带的控制,延深往往是延长的2～3倍。含矿物质在前寒武纪区域变质作用和混合岩化过程中,发生过多次迁移和富集,形成初始矿源层。经过燕山期岩浆热液活动作用,矿源层中的金进一步活化转移,在有利构造空间形成金矿体。通过对成矿规律的研究,确定矿化自然边界和矿化中心,有利于矿床的整体勘查,确定深部与外围找矿的方向,并运用行之有效的勘查方法开展新一轮的找矿工作。

Disscussion on the Deep Prospecting and Mineralization Regularity of Laozuoshan Gold Mine in Heilongjiang Province

Six rock gold deposit has been found in Laozuoshan gold field,they distribute in the earth,middle and west metallogenic zone.Orebody is controlled by ductile shear zone,its deepening is 2~3 times to prolonged.Through regional metamorphism and migmatization process of Precambrian,mineral bearing cause migration and concentra-tion,and form initial source bed.Beause of the magmatic hydrothermal activity of Yanshan period,the gold of source bed occurs activation and transfer further,and form gold orebodies in favorable structure space.Through researching rules of mineralization,we determine the natural boundary and mineralization center,it is favorable to overall explo-ration of deposit,and determine the prospecting direction of deep and external,and make a new exploration work using effective methods.