Sulfur
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Mineral NameSulfur
Chemical FormulaS
Mohs Hardness1.5
Crystal Systemorthorhombic
Lusterresinous
Streak Colorwhite to pale yellow
Cleavagepoor/indistinct on {001}, {110}, {111}
Fractureconchoidal
Specific Gravity2.07
Colorsyellow, brownish-yellow, greenish-yellow
Transparencytransparent to translucent
Type LocalitySicily (Italy), Japan, Indonesia, Gulf Coast (USA)
Mineral GroupNative Elements
Usessulfuric acid production, fertilizers, pesticides, pharmaceuticals, rubber vulcanization
Associated Mineralsgypsum, calcite, aragonite, celestine, halite
Raritycommon
Description
This microscopic image displays sulfur crystals grown from a melt under polarized light, revealing a vibrant tapestry of purples, blues, yellows, and oranges in distinct, angular domains, characteristic of crystal interference colors.
Geological Context
Sulfur forms in various geological settings, including volcanic fumaroles and hot springs, sedimentary deposits associated with evaporites and salt domes, and as a product of bacterial reduction of sulfates.
