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无产阶级文化大革命以来,我国火山岩地区铁矿的找矿工作有了较大突破,发现并探明了一批不同规模的矿床.实践表明,我国陆相火山岩地区铁矿分布广泛,从晚古生代二迭纪玄武岩区到中生代火山岩区均有产出.这些铁矿有的产于火山喷发-沉积岩中,有的产于火山岩区浅成-超浅成侵入体与围岩接触带及其附近.从成因上看,有火山喷发-沉积矿床、火山岩区热液矿床和火山岩区接触交代矿床.找矿工作的新进展和新认识,大大打开了人们的眼
Since the Great Proletarian Cultural Revolution, a great breakthrough has been made in prospecting for iron ore in the volcanic areas of China and a number of ore deposits of different sizes have been discovered and proven. Practice shows that the iron ore in the continental volcanic rocks in the country is widely distributed. From the Late Paleozoic II The Jurassic basalts and the Mesozoic volcanic rocks are both produced in volcanic eruption-sedimentary rocks, some of which occur in the vicinity of the contact zone between the shallow and ultra-shallow intrusions of volcanic rocks and the surrounding rocks. Genesis, there are volcanic eruption - sedimentary deposits, volcanic hydrothermal deposits and volcanic rock contact with the metasomatic deposits. New progress and new understanding of prospecting, greatly opened the eyes of people