Naturenotes With Rudy Mancke
Chert
- Autor: Vários
- Narrador: Vários
- Editora: Podcast
- Duração: 0:01:24
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Sinopse
Chert is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide. Chert is characteristically of biological origin, but may also occur inorganically as a chemical precipitate or a diagenetic replacement, as in petrified wood.
