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接触交代型铁矿床在我国分布广泛.该类型矿床中富铁矿石占一半以上,其富矿储量也约占各类型富矿近一半.研究这类矿床的成矿规律、控矿因素,具有重要的意义.围岩对成矿的控制作用就是其中的一个不可忽视的方面.围岩对成矿作用的影响,特别是矿化岩性的影响迄今仍众说纷纭.有的认为纯灰岩对成矿有利,有的认为白云质灰岩有利.本文着重就我国东部地区接触交代型铁矿床围岩的控矿作用作一初步探讨.
The contact metasomatism iron deposits are widely distributed in our country.The iron ore in this type of deposit accounts for more than half, and the rich ore reserves account for nearly half of all kinds of rich ore.It is important to study the metallogenic regularity and ore-controlling factors of these deposits The significance of the surrounding rock control on mineralization is one of the aspects that can not be ignored.On the impact of the surrounding rock on mineralization, especially the influence of mineralized rock is still controversial, and some believe that pure limestone is beneficial to metallogenesis , And some believe that dolomitic limestone is favorable.This paper focuses on the preliminary study on the ore-controlling effect of the surrounding rock of contact metasedimentary iron deposits in the eastern part of China.