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单词 alunite
释义

Definition of alunite in English:

alunite

noun ˈal(j)ʊnʌɪt
Mineralogy
  • 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 masses and also as tabular or rhombohedral crystals, colourless when pure but often yellowish or reddish-brown owing to impurities.

Origin

Early 19th century. From French alunite from alun + -ite.

Definition of alunite in US English:

alunite

nounˈal(j)ʊnʌɪt
Mineralogy
  • 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 masses and also as tabular or rhombohedral crystals, colourless when pure but often yellowish or reddish-brown owing to impurities.

Origin

Early 19th century. From French alunite from alun + -ite.

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更新时间:2025/7/1 13:16:27