Geyserite
![](../I/m/Geyserite.jpg)
Geyserite from Iceland
Geyserite is a form of opaline silica that is often found around hot springs and geysers. Botryoidal geyserite is known as fiorite. It is sometimes referred to as sinter.
References
![](../I/m/Chinese_Spring_upper_geyser_basin_yellowstone.jpg)
Geyserite basin at Chinese Spring, Upper Geyser Basin, Yellowstone
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