桂北构造蚀变岩型金矿的发现及成矿规律研究

桂北地区金矿划分为石英脉型、石英细脉薄脉型和构造蚀变岩型金矿.不同级别剪切带构造控制着矿化集中区、矿床、矿体的分布,以及与矿脉形态、产状和矿化类型有着空间上的密切联系.具有上部石英脉型、中部石英细脉薄脉型、下部构造蚀变岩型金矿的矿化分带模式.桂北地区成矿条件好,与国内外许多大型超大型剪切带型金矿有类似成矿地质背景.研究认为,在桂北地区找矿应转变找矿思路,在老矿山深部及周边地区,具有大型构造蚀变岩型金矿找矿前景.

Discovery and metallogeny of structure altered rock type gold deposit in north Guangxi

The gold deposits in north Guangxi area can be divided into quartz vein type, quartz veinlet or thin vein type and structure altered rock type. The shear zones of different classes controlled the distribution of mineralization accumulation area, deposit and orebody, as well as their close relation ship in space with vein shape, occurrence and mineralization pattern, resulting in the mineralization zoning model of quartz vein at the upper side, quartz veinlet or thin vein in the center and altered rock type gold deposit at the bottom. There are favourable ore forming conditions in north Guangxi area with the metallogenic background similar to many large or gigantic shear zone type gold deposits home and abroad. It is believed that the concept for exploration in north Guangxi should be changed and it is prospective to find large scale structure altered rock type gold deposit at the deep part or surrounding areas of the old mine mountain.