一、砂矿的岩石区域和成矿特性不同成分的砂矿的分布和地球表面一定的岩系之间存在着密切的联系,这是相当明显的。基底建造中相应的原生矿源的存在,决定了在陆架带有砂矿堆积发生的可能性,组成砂矿的重矿物,大多是各种火成岩、变质岩和沉积岩的副矿物。应该指出,不是任何时侯,也 1. It is quite obvious that there is a close relationship between the distribution of the sands with different compositions of the rock area and ore-forming characteristics of the sands and the certain rock series on the earth’s surface. The existence of the corresponding primary source in the construction of the basement determines the possibility of sand accumulation on the shelf. The heavy minerals that make up the sandstone are mostly the accessory minerals of various igneous rocks, metamorphic rocks and sedimentary rocks. It should be pointed out that not at any time, too