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石墨属于不可再生资源,是我国的优势矿种, 主要成分是碳 ,即元素碳的一种同素异形体。石墨是一种较为柔软的矿物,不透明且触感油腻,颜色由铁黑到钢铁灰,形状呈晶体状、薄片状、鳞状、条纹状、层状体或散布在变质岩中。
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