This page provides all possible meanings and translations of the word halloysite
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A monoclinic-domatic mineral containing aluminum, hydrogen, oxygen, and silicon.
Webster DictionaryRate this definition:(0.00 / 0 votes)
a claylike mineral, occurring in soft, smooth, amorphous masses, of a whitish color
Origin: [Named after Omalius d'Halloy.]
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Halloysite is a 1:1 aluminosilicate clay mineral with the empirical formula Al2Si2O5(OH)4. Its main constituents are aluminium, silicon and hydrogen. Halloysite typically forms by hydrothermal alteration of alumino-silicate minerals. It can occur intermixed with dickite, kaolinite, montmorillonite and other clay minerals. X-ray diffraction studies are required for positive identification. It was first described in 1826 and named after the Belgian geologist Omalius d'Halloy.
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