a rock or mineral from which alum is obtained, esp. alunite.
单词 | θ7147 |
释义 | the world > the earth > minerals > types of mineral > sulphates > [noun] > alunite (4) alum stone1651 a rock or mineral from which alum is obtained, esp. alunite. aluminilite1804 = alunite, n. alunite1821 A mineral which was historically an important source of alum and is now mined for potassium and aluminium, and which occurs in granular or compact… alumite1826 = alunite, n. |
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