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alunite

   Also found in: Encyclopedia, Wikipedia 0.02 sec.
al·u·nite  (ly-nt)
n.
A gray mineral, chiefly K2Al3(OH)6(SO4)3, used in making alum and fertilizer.
[French, from alun, alum, from Latin almen.]
alunite [ˈæljʊˌnaɪt]
n
(Earth Sciences / Minerals) 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: KAl3(SO4)2(OH)6
[from French alun alum (from Latin alūmen) + -ite1]


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Preliminary findings confirm gold and silver mineralization coincident with moderate to strong argillic alteration characterized by the presence of alunite, andalusite and tourmaline.
Linux Gold Corp. Analysis of Rock and Soil Samples Confirms Gold and ... by Business Wire
Similarly, two large quartz alunite alteration areas in the northwest quadrant of the property have never been sampled, trenched, or drilled.
Marifil Acquires Attractive Gold Project by Business Wire
This larger feature is cored by an easterly trending egg-shaped 1,600 by 3,200 metre magnetic low that may reflect magnetic destructive alteration as it correlates with an airborne total-potassium-high and thorium-potassium airborne radiometric-low that hosts the Quartz Lake, BS Zone, Alunite Ridge and North Vein low- and high-sulphidation epithermal gold and silver mineralized zones.
Stealth Minerals Limited: Sofia Geophysics Reveals Large-Scale ... by Business Wire
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