geyserite

American  

[gahy-zuh-rahyt, -suh-] / ˈgaɪ zəˌraɪt, -sə- /

noun

Petrology.

1. a variety of siliceous sinter deposited about the orifices of geysers and hot springs.

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geyserite British  

/ ˈɡiːzəˌraɪt /

noun

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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Etymology

Origin of geyserite

First recorded in 1805–15; geyser + -ite ¹

Example Sentences

The diamond mines of Kimberly, Africa, are of this type and the ore is a sort of hardened geyserite or mud in which are enclosed the precious gems.

From Project Gutenberg

Carl leaned over the spring and pointed toward gray, pearl-like beads: “geyser eggs,” small encrustations of silica deposits called sinter, or geyserite, that line steam vents and springs.

From New York Times

In the farthest corner, beneath a shelf or mound of geyserite, appeared the opening of a fathomless cave.

From Project Gutenberg

It is located in the Upper Geyser Basin, and is situated on a mound of geyserite built by its own water.

From Project Gutenberg

For while on one side some seemed just as if they were starting into existence, on another were those apparently in the very zenith of their strength, while others again looked as if they were making but their last feeble efforts at existence, though it was evident, from the heaps of consolidated geyserite surrounding them, that they had but recently passed through halcyon days of youthful energy and manhood power.

From Project Gutenberg