Silica

Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2, most commonly found in nature as quartz In many parts of the world, silica is the major constituent of sand.

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How deep-sea silica ends up in Saturn moon Enceladus' famous geysers

Not Just Water. Enceladus is Also Blasting Silica Into Space

Research suggests that loss of silica secreting organisms in the oceans during the end-Permian mass extinction may have played a prominent role in temperatures not recovering for over 5 million years.

Silica nanostructure with chemo-enzymatic compartmentalization