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在川、黔、滇边界的数万平方公里范围内,上二迭统龙潭组底部,广泛出露一层硫铁矿铝质粘土岩的沉积,矿层层位稳定,属火山碎屑与风化残余型的沉积矿床(见图1)。矿石主要成分为黄铁矿(硫铁矿)及少量白铁矿,矿层厚度、品位多达工业开采指标要求。埋藏量以川南珙县、江安、兴文、叙永、古蔺最丰富,垂深200～400米内,预计矿石总储量约数十亿吨。叙永等地经初勘,沿矿层走向长每5公里,约有0.5～1亿吨储量,是西南的大中型化工原料基地。 川南硫铁矿其矿层的间接顶板为K_1煤层。煤硫均可综合开发。可是,这一具有经济价值的矿产,并未能引起有关部门的重视,目前仅有地方办的矿井沿露头小规模采
Within the tens of thousands of square kilometers of the border of Sichuan, Guizhou and Yunnan, the deposition of a layer of pyrite-type aluminum clay rock is widely exposed at the bottom of the Longtan Formation in the Upper Permian, and the layers of the ore layer are stable, belonging to volcanic debris and weathering remnants Type sedimentary deposit (see Figure 1). The ore is mainly composed of pyrite (pyrite) and a small amount of white iron ore. The thickness and grade of ore are as high as those required by industrial mining. Buried reserves in southern Sichuan Lixian, Jian, Xingwen, Syria Yong, Gulin most abundant, down 200 ~ 400 meters, the total ore reserves of about billions of tons. Xu Yong and other places through the first survey, along the ore to the long every 5 km, about 0.5 to 100 million tons of reserves, is the Southwest’s large and medium-sized chemical raw materials base. The indirect roof of the south Sichuan pyrite mine is K_1 coal seam. Coal sulfur can be integrated development. However, this mineral with economic value did not attract the attention of the relevant departments. At present, only mines run by the local authorities along the outcrop