Sulfur
Image: <a rel="nofollow" class="external text" href="https://www.flickr.com/people/14730981@N08">James Petts</a> from London, England (CC BY-SA 2.0)
Mineral NameSulfur
Chemical FormulaS
Mohs Hardness1.5
Crystal Systemorthorhombic
Lusterresinous
Streak Coloryellow to white
Cleavagepoor on {001}, {110}, {111}
Fractureconchoidal
Specific Gravity2.07
Colorsyellow, yellowish-brown, greenish-yellow
Transparencytransparent to translucent
Type LocalitySicily, Italy
Mineral GroupNative Elements
Usesindustrial, chemical production, fertilizers, collector
Associated Mineralscalcite, aragonite, gypsum, celestine
Raritycommon
Description
This specimen features numerous small, botryoidal to granular, bright yellow sulfur crystals forming a crust on a light-colored matrix, displaying a characteristic resinous luster.
Geological Context
Sulfur commonly forms in volcanic environments from the sublimation of sulfur gases, or in sedimentary deposits through the bacterial reduction of sulfates like gypsum and anhydrite.
