Hard mineral composed of silicon dioxide - Crossword Clue
Crossword Clue Last Updated: 30/03/2023
Below are possible answers for the crossword clue Hard mineral composed of silicon dioxide.
6 letter answer(s) to hard mineral composed of silicon dioxide
QUARTZ
a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities
colorless glass made of almost pure silica
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