扎木敖包铁与石墨矿矿床特征及成矿机理浅析

Analysis on Deposit Characteristics and Metallogenic Mechanism of Zhamuaobao Iron and Graphite Ore

铁矿床分东、西两个矿段,东矿段由42、46线所控制的5个矿体组成;西矿段由30线所控制的两个矿体组成。两矿段相隔约800余m,以中部收敛变窄的矽卡岩带相连两矿段共7个矿体,7个矿体的共同特点是:矿体呈似层状或层状,北倾,上部倾角较缓,向下稍有变陡,上部厚度较薄向下逐渐变厚,且有向深部扩大继延的趋势。石墨矿床分布在38~50线之间,共形成8个矿体。根据控矿岩石的矿物组合,变质程度,认为该矿床属区域沉积变质型矿床。

The iron ore deposit is divided into east and west ore blocks. The east ore block is composed of five ore bodies controlled by the 42 and 46 lines and the west ore block is composed of two ore bodies controlled by the 30 line. They are over 800 m apart and connected with convergent and narrow skarn zone in the middle. There are seven ore bodies in total and their common features are that they are stratiform-like or stratiform, north-dipping, the upper dip angle is gentler and the lower one is slightly steeper, the upper part is thinner and the lower part is thicker gradually as well as there is a tendency to expand and extend to the deep. The graphite deposits are distributed between the 38~50 lines, forming a total of 8 ore bodies. According to the mineral combination and metamorphic grade of ore-controlling rocks, the deposit is considered to be a regional sedimentary metamorphic deposit.