汶口盆地发现自然硫矿

Some typical examples illustrating the tenor contraction of such metallic ore veins or bodies as Au, Pb, Zn, W, Sn, Ta and Nb have been recorded by Chinese geologists in the course of ore exploration and mining. The similar demonstrations have also been observed in Japan, Peru and the U.S.S.R. by their respective geologists. Yet its origin as a problem in the field of ore deposits remains unsolved. In this paper, by adopting the photon-based chemical thermodynamical method proposed by the author, the gravitational field position Z related to the intensity of the diffusion force of ore fluids are proved to be the leading factor causing the tenor contraction of metallic veins or bodies. The tenor contraction of metallic veins or bodies under suitable ore-controlling structural conditions is an objective fact in the science of ore deposits, though in no case should it be regarded as a rule to deny the necessity of searching for ore at depth. The variation of the deep-seated ore-controlling structures might alter the tenor of the metallic veins or bodies. The Taipushi wolframite deposits in Nei Monggol could be taken as a convincing example. The tungsten content increases at great depth owin,g to the dilatation during ore deposition along the schistosity of the Proterozoic crystalline schists. There also have been observed similar phenomena in other deposits of China.     

汶东盆地自然硫矿床地质特征

一八九四年弗拉斯法(Frasch process)采硫成功之后,自然硫产量一直处于上升之势,从而改变了世界硫源结构的面貌。我国自然硫矿床研究较晚。近年由山东省地质矿产局一队发现,九队进行工作的汶蒙凹陷带中规模巨大的沉积型自然硫矿床,不仅填补了我国的空白,而且对该类矿床的成矿理论及国民经济建设均具有重要意义。     

汶口盆地发现自然硫矿

我国硫磺资源几乎全部来源于硫铁矿。硫铁矿提炼硫磺不仅工艺复杂,而且成本高,建设周期长,是很不经济的。十九世纪,意大利西西里岛自然硫矿开发之后,美、苏、波、伊等国相继发展了自然硫矿业,从而改变了世界硫磺工业的结构面貌。在我国,虽曾于祁连、南疆,湖北等地见及自然硫,但由于规模、交通等原因,发展受到限制。近年,山东地质局