Concept
Version 27
Created by Boundless
Substances and Mixtures
![Naturally occurring sulfur crystals](../../../../../../../../../figures.boundless-cdn.com/9189/full/schwefel-01.jpeg)
Naturally occurring sulfur crystals
Sulfur occurs naturally as elemental sulfur, sulfide, and sulfate minerals and in hydrogen sulfide. This mineral deposit is composed of a mixture of substances.
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