明矾石是高岭土中难以除去的有害杂质，高岭石也是明矾石矿石中的有害杂质。
Alunite is a harmful impurity which is difficult to remove from kaolinite and so is kaolinite in alunite ore.
目前已探明的矿藏有板石、高岭土、白云石、铁矿石等。
At present, there are proven reserves Slate, kaolin, dolomite, iron ore and so on.
焙烧高岭土、火烧角砾岩、火烧岩、烧变泥岩四种矿石自然类型。
Its natural types are roasted kaolin, burnt breccia, burnt rock and burnt mudstone.
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