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Hard Mineral Composed Of Silicon Dioxide Crossword Clue

There is 1 exact and 139 possible answers.
We've checked our database and believe the answer is QUARTZ which was last seen in the The Guardian Quick crossword.
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We think the answer to this crossword clue is: QUARTZ

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99%6Exact Match!
noun

• colorless glass made of almost pure silica

• 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

51%12Mineral composed of silicon dioxide
noun

• a white mineral consisting of silica; found in volcanic rocks

51%12Mineral composed of silicon dioxide and metal oxides
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We think you're currently doing a The Guardian Quick crossword, and other users also searched for these clues:

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Clue Last Found In...

Source #Number Answer
The Guardian Quick30 Mar 2023 Across 17
This clue was last seen in the publications above.

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