alunite
[al-yuh-nahyt]
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noun
a mineral, a hydrous sulfate of potassium and aluminum, KAl3(SO4)2(OH)6, commonly occurring in fine-grained masses.
Origin of alunite
Also called al·um·stone [al-uh m-stohn] /ˈæl əmˌstoʊn/.
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for alunite
Historical Examples of alunite
Of other natural mineral sources, alunite is the most important.
The Economic Aspect of GeologyC. K. Leith
One of the interesting features of this occurrence is the abundance of alunite.
The Economic Aspect of GeologyC. K. Leith
Alunite, al′un-īt, n. a mineral consisting of common alum together with normal hydrate of aluminium.
In the Goldfield camp (p. 230) the ores are closely associated with alunite in such a manner as to suggest a common origin.
The Economic Aspect of GeologyC. K. Leith
Alunite is a potassium-aluminum sulphate, which differs from sericite in that sulphur takes the place of silicon.
The Economic Aspect of GeologyC. K. Leith
alunite
noun
Word Origin for alunite
C19: from French alun alum (from Latin alūmen) + -ite 1
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