geyserite


gey·ser·ite

noun \-zə-ˌrīt\

Definition of GEYSERITE

:  a variety of opal that is deposited around some hot springs and geysers in white or grayish concretions

Origin of GEYSERITE

French geysérite, from geyser, from Icelandic Geysir
First Known Use: circa 1814

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