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- Subclass of
- sinter
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- Geyserite.jpg
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- Geyserite
- described by source
- National Encyclopedia of Uzbekistan
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thumb|Geyserite from Iceland
Geyserite, or siliceous sinter, is a form of opaline silica that is often found as crusts or layers around hot springs and geysers. Botryoidal geyserite is known as fiorite. Geyserite is porous due to the silica enclosing many small cavities. Siliceous sinter should not be confused with calcareous sinter, which is made of calcium carbonate.
Excerpted from Wikipedia’s “geyserite” article, available under the CC BY-SA 4.0 licence.