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[gahy-zuh-rahyt, -suh-] /ˈgaɪ zəˌraɪt, -sə-/
noun, Petrology.
a variety of siliceous sinter deposited about the orifices of geysers and hot springs.
Origin of geyserite
First recorded in 1805-15; geyser + -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for geyserite
Historical Examples
  • Everywhere steaming hot springs are seen, also mounds and cones of geyserite.

  • The Brilliant is a beautiful blue hot spring and near to it is the Comet, which has built up a small cone of geyserite.

  • Of what use are pieces of geyserite when taken away from their natural environment?

  • This particular form of Opal is known as geyserite, and it is often differently colored by different ingredients.

  • The Constant is visible from the roadway in the bottom of a large tract of geyserite which is unsafe for pedestrians.

    The Yellowstone National Park Hiram Martin Chittenden
  • geyserite, a white, porous, stringy variety deposited by certain hot springs like the Yellowstone geysers.

    Geology William J. Miller
British Dictionary definitions for geyserite


a mineral form of hydrated silica resembling opal, deposited from the waters of geysers and hot springs. Formula: SiO2.nH2O
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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