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目前,国内有关砂金矿床的另一类型——岩溶矿金矿的研究和报道甚少,一些金矿床分类学者都把湖南省隆回县岩口砂金作为岩溶砂金矿床的唯一代表实例.我国南方各省,岩溶地貌十分发育,对于寻找这一类型的砂金矿床极为有利.一、区域地质及自然地理概况(一)区域地质矿区处于江南古陆南缘,湘中初阳山字型构造北翼,雪峰山北东向弧形构造带与白马山——龙山东西构造带交接部位,主要构造线方向呈北北东西.出露地层主要有:元古界板溪群浅变质岩系、震旦系江口组、南沱组报岩、变质冰碛合砾砂岩、泥盆系碎屑岩及碳酸盐类地
At present, there is little research and reports about another type of karst gold deposit in the country, some gold taxonologists have regarded the gold deposit in Longkou County, Hunan Province as the only representative example of the karst sand gold deposit. , Karst landform is very developed, for the search for this type of placer gold deposit is extremely advantageous.A overview of regional geology and natural geography (a) the regional geological mining area is located in south edge of southern ancient land, Eastward arc structural belt and the intersection of the Baimashan-Longshan structural belt, the main tectonic line is north-north east-west. The exposed formations include the Proterozoic Banxi Group superficial metamorphic rocks, Sinian Jiangkou Formation, Nantuo group reported rock, metamorphic moraine gravel sandstone, Devonian clastic rocks and carbonate