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一、实验研究课题的提出 在我国长江中下游、华北及天山东段等地区,许多具有工业价值的铁(铜)硫矿床的产出,常常在空间上和成因上与一定层位的膏盐层有着密切的联系。苏联的土尔盖和西伯利亚等地区的某些铁矿床山都有类似的地质特征。上述铁矿体在空间分布上常常位于膏盐层之中或其附近,在成矿时间上晚于沉积的膏盐层,在矿物成因组合上具有硬石膏—磁铁矿—黄铁矿三矿物组合。这三个矿物的分布具有分带现象,一般来说,黄铁矿在外带。
First, the proposed experimental research topics In the middle and lower reaches of the Yangtze River in the Yangtze River, northern China and eastern Tianshan and other regions, many of the industrial value of iron (copper) sulfur ore output, often in space and genesis with a certain level of gypsum Layers are closely linked. Some of the iron-bearing beds in the Soviet Union, including Turku and Siberia, have similar geological features. The above iron ore bodies are often located in or near the gypsum salt layer in the spatial distribution, later in the deposited gypsum salt layer on the time of mineralization, having anhydrite-magnetite-pyrite trisminerals on the mineral genetic association combination. Distribution of these three minerals with zoning, in general, pyrite in the belt.