DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY
Sulphur or sulfur (symbol S) is an abundant, non-metallic chemical element. In nature, sulphur can be found both as the pure element and as compounds, such as sulphide and sulphate. Elemental sulphur, whether amorphous or crystalline is most often found in volcanic environments Well developed crystals, as in this picture, are formed in voids and open surfaces, and are much in demand with mineral collectors for their bright yellow colours and polyhedral shapes. Actual width of this sample 30 cm.
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