First Known Use: circa 1814
Dictionary
geyserite
noun gey·ser·ite \-zə-ˌrīt\
Definition of GEYSERITE
: a variety of opal that is deposited around some hot springs and geysers in white or grayish concretions
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Origin of GEYSERITE
French geysérite, from geyser, from Icelandic Geysir
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