摘要
本文在野外地质工作基础上，总结了永嘉下龙银金矿床的成矿地质背景，矿床地质特征和找矿方法等。进一步确认该矿体受上侏罗统西山头组酸性火山岩层所控制，矿石自然类型为含金银细脉浸染状黄铁矿化蚀变凝灰岩。属火山热液蚀变型。
Based on the field works,the paper summarized the minerogenetic geological setting, charac teristics of mineral deposits and prospecting methods, ect. of Xialong silver-gold deposit. It is confirmed that the ore bodies are controlled by the acid volcanic rocks of Xishantou Formation in Upper Jurassic. The natural types of the ore is altered tuff which contains pyrites bearing stock work and disseminated gold-silver ore. The genetic type of mineral deposits belongs to the vol canic hydrothermal alteration type.
出处
《浙江国土资源》
1997年第2期22-30,共9页
Zhejiang Land & Resources
关键词
银金矿床
地质特征
火山热液蚀变型
找矿方法
永嘉下龙
silver-gold deposits
geological characteristics
volcanic hydrothermal alteration type
Xialong of Yongjia county
