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Silicate. It is silica, SiO2 with contaminants such as Fe3+ that give it color. technically it is a tectosilicate.

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Is amethyst a silicate or nonsilicate?

non-silicate. Sapphire is Al2O3, alumina or corundum, contaminants such as chromium give it color.


What is the mineral group for amethyst?

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Is pyrite a silicate or non silicate mineral?

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What category does fluorite fall under non-silicate or silicate?

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Is antimony a silicate or non-silicate?

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