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alunite
[ al-yuh-nahyt ]
noun
- a mineral, a hydrous sulfate of potassium and aluminum, KAl 3 (SO 4 ) 2 (OH) 6 , commonly occurring in fine-grained masses.
alunite
/ ˈæʊˌԲɪ /
noun
- a white, grey, or reddish mineral consisting of hydrated aluminium sulphate. It occurs in volcanic igneous rocks and is a source of potassium and aluminium compounds. Formula: KAl 3 (SO 4 ) 2 (OH) 6
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51Թ History and Origins
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51Թ History and Origins
Origin of alunite1
C19: from French alun alum (from Latin ū ) + -ite 1
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Example Sentences
Examples have not been reviewed.
A subsulphate of alumina and potash; alunite.
From
His alunite process has been approved by the Bureau of Mines and OPM's own technical staff, has been used successfully in Japan.
But OPM did not specify whether alunite ore could be used, hemmed & hawed over location of the plant.
A report recommending alunite as an aluminum source was prepared by the Bureau of Mines more than six weeks ago.
But the alunite process yields one-half ton of sulfate potash worth $18.12 and one-third ton sulfuric acid worth $6, as byproducts.
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