摘要
莫托萨拉铁锰矿中铁矿石的化学成分以Fe2O3 为主,w (Fe2O3)可达78.76% ,其次为w(SiO2)(10% ～50% ),w (FeO)含量多< 5% 。矿物成分以赤铁矿为主,次为玉髓、磁铁矿、镜铁矿、云母等。微量元素以Pb,Zn 较高,局部Cu 含量较高。稀土元素含量较低。锰矿石中以MnO2 为主,w (MnO2)可达60% 左右,其次为w (SiO2)(10% ～20% )和Fe2O3;矿物组合分为两种类型:一种以菱锰矿为主,次为赤铁矿、石英、水铁矿、方解石、玉髓等;另一种以褐锰矿为主,次为蒙脱石、云母、软锰矿、黑锰矿等,这种锰矿多为低磷优质锰矿,其开发利用对我国冶金工业有重要意义;微量元素中亲铜元素Cu,Pb,Ag,Au,As,Sb,Hg 含量较高,Ti,V,Cr,Ni含量较低;稀土元素含量也较低。
In Motuosarla deposit, the iron ore is mainly composed of Fe 2O 3(～78.76%),SiO 2(10 50%),FeO (lower than 5%). The mineral composition is dominated by hematite,then chalcedony,magnetite, specularite, mica, actinolite, a little amount of Fe calcite, siderite, etc. Among trace elements, the contents of pb and Zn are higher; Cu higher locally. REE contents are low without close relation to the volcanic rock. The manganese ore is mainly composed of MnO 2(60%),then SiO 2(10 20%)、Fe 2O 3. According to mineral composition, there are two types of ore, one type dominated by rhodochrosite, then hematite, quartz, ferrihydrite, calcite, chalcedony, etc; the other dominated by braunite, then montmorillonite, mica, pyrolusite, psilomelane, is usually excellent Mn Ore with low phosphorous content, its utillization has important significance to metallurgical industry. The contents of As and Zn are high among trace elements, and REE is low.
出处
《地质找矿论丛》
CAS
CSCD
1999年第4期69-75,共7页
Contributions to Geology and Mineral Resources Research
基金
国家科技攻关96-915 项目!(编号03-05B-2)
关键词
铁
锰
物质成分
Motuosarla
iron ore
manganese ore
composition.
