geyserite Hear it!

geyserite definition

gey·ser·ite (gī′zər īt′)

noun

siliceous material, usually opaline silica, deposited on the edges of geysers and hot springs

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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