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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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