Geyserite - definition of geyserite by The Free Dictionary
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A white or grayish opaline siliceous deposit formed around natural hot springs.
(Minerals) a mineral form of hydrated silica resembling opal, deposited from the waters of geysers and hot springs. Formula: SiO2.nH2O
References in periodicals archive
Ghostly hot springs at Hveravellir in Iceland overflow on to terraces of geyserite
Electra mines chalky geyserite (CG), kaolin, copper and gold.
Apple Bay covers accessible silica, alumina and geyserite.