从岩矿镜下鉴定资料入手，分析了龙永煤田童子岩组菱铁矿的形态特征和赋存状况。
From microscopic examination of rocks and minerals, the author analyzed morphological characteristics and occurrence status of siderite in Tongziyan Formation, Longyong Coalfield.
金属矿物较简单，主要为镜铁矿含自然金和银金矿，次为黄铁矿、黄铜矿、菱铁矿和微量硫盐。
The main metallic mineral is specularite containing native gold and electrum. Surbordinate minerals are pyrite, chalcopyrite siderite and a very small amount of sulfosalt.
浮选可产出高纯镜铁矿，再细磨可制得油漆填料云母氧化铁。
High pure specularite could be produced by flotation method. After fine grinding, it could be used to produce paint filler.
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