n. 褐锰矿；布氏体；布劳奈铁
1.Ore minerals are composed of psilomelane, pyrolusite, braunite, rhodochrosite and manganocalcite and gangue minerals are composed of magnetite, goethite and pyrite and so on.
矿石矿物主要有硬锰矿、软锰矿、褐锰矿、菱锰矿、钙菱锰矿等。脉石矿物主要有磁铁矿、针铁矿、黄铁矿等。
2.Ore minerals are composed of psilomelane, pyrolusite, braunite, rhodochrosite and manganocalcite and gangue minerals are composed of magnetite, goethite and pyrite and so on.
矿石矿物主要有硬锰矿、软锰矿、褐锰矿、菱锰矿、钙菱锰矿等。脉石矿物主要有磁铁矿、针铁矿、黄铁矿等。