"Silica" is a word in ENGLISH

silica ENGLISH
Definition:

Silicon dioxide, SiO/. It constitutes ordinary quartz (also
opal and tridymite), and is artifically prepared as a very fine, white,
tasteless, inodorous powder.

Few words of positivity

Doing easily what others find is difficult is talent doing what is impossible for talent is genius.

Henri Frederic Amiel

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quartz ENGLISH

A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes …

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