肖板及其外围金矿成矿规律与找矿方向
METALLOGENIC REGULAR OF GOLD DEPOSIT IN XIAOBAN,FUJIAN,AND ITS VICINITY AND THEIR FURTHER EXPLORATION
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摘要: 肖板及外围地区是闽中"金三角",矿点(床)众多。该区有利的成矿、控矿构造条件、麻源群变质岩以及燕山早期岩浆活动是金矿成矿的最重要因素,也是找矿的主要标志。金矿床以与燕山早期岩浆岩有关的岩浆热液型为主,矿化类型以构造蚀变岩型为主。肖板、龙门场、杨梅、徐州、岭头坪、葛坑是有利的找矿远景区,特别是火山拗陷区内的金矿点或小型金矿床集中区,应注意寻找盖层之下基底变质岩系中与肖坂类似的大、中型金矿床。Abstract: With more than 20 gold deposits (or gold ore spots)and favorite oreforming conditions, Xiaoban and its vicinity are a concentric area of gold deposit in middle part of Fujian.The main metallogenic and ore-controlling factors for the gold deposit in the area are a favorite assemblage of metallogenic and ore-controlling structures, the metamorphic rocks of Proterozoic Mayuan Group and the itermidiateacid magmatic activity in the early Yanshanian;and all these are also the important prospecting criteria.The main kind of gold deposit is magmatic hydrotermal type, and the altered fractured rock type predominated in gold mineralization.The targets of further gold ore exploration in the area are as follows:Xiaoban, Longmenchang, Yangmei, Xuzhou, Lingtouping and Gekeng. Particularly more attention may be paid to the minor scale gold deposits or gold ore spots situated in volcanic depression and to altered fractured rock type gold deposits like Xiaoban-Shuangqishan in the Mayuan Group metamorphic rocks beneath the volcanic cover rock.
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Key words:
- gold deposit /
- metallogenic regular /
- further exploration /
- Xiaoban of Fujian
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