• synonyms


[gahy-zuh-rahyt, -suh-]
noun Petrology.
  1. a variety of siliceous sinter deposited about the orifices of geysers and hot springs.
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Origin of geyserite

First recorded in 1805–15; geyser + -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for geyserite

Historical Examples

  • Everywhere steaming hot springs are seen, also mounds and cones of geyserite.

    With God in the Yellowstone

    Alma White

  • 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

British Dictionary definitions for geyserite


  1. a mineral form of hydrated silica resembling opal, deposited from the waters of geysers and hot springs. Formula: SiO 2 . n H 2 O
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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