摘要
“玲珑焦家式”金矿的成岩成矿,从新太古代至中生代存在着继承性的成因关系,成矿具有长期性、多源性特点,但中生代燕山早期岩浆活动是主导成矿因素。区域化探成果显示胶东金矿直接矿源岩———郭家岭花岗岩金的丰度比原始矿源岩———早前寒武纪变质沉积岩系及侵入岩系金的丰度低1/2。郭家岭花岗岩面积在2 km2以上岩体定量估计金亏损总量与胶东金矿总量预测的资源量相当,从一个侧面展现了胶东金矿资源的潜力。望儿山金矿的找矿实践展示,焦家式金矿在1 000 m以下尚有巨大潜力,整个胶东金矿产区在3 000 m以上的资源潜力应在5000 t以上。
Ore - forming of Linglong - Jiaojia type gold deposit has the characteristics ot long - term and multisource property, but volcanic movement in early Mesozoic Yanshan period is major dement for ore -forming. As proved by regional geochemical achievements, abundance of direct ore source rocks Guojialing granite is 1/2 lower than its in original ore source rock metamorphic sedimentary rocks and intrusive rocks in early Precambrian. Estimated gold loss amount of Guojialing granites with the square of 2km^2 is equal to total predication gold amount in Jiaodong gold deposit, which showed there is great gold resource potentiality in Jiaodong area. As proved by ore exploration of Wang＇ershan gold deposit, it is said that there is great potentiality for exploring Jiaojia gold deposit under 1000m, and the total amount of Jiaodong gold mine over 3000m is about 5000t.
出处
《山东国土资源》
2006年第12期36-41,共6页
Shandong Land and Resources
关键词
“玲珑-焦家式”金矿
成矿模式
资源潜力
山东
胶东地区
Linglong - jiaojia gold deposit
ore - forming model
resource potentiality
Shandong province
Jiaodong area
