RockVault
Sulfur

Sulfur

Image: <a href="//commons.wikimedia.org/wiki/User:Elena_Tartaglione" title="User:Elena Tartaglione">Elena Tartaglione</a> (CC BY-SA 4.0)

Mineral NameSulfur
Chemical FormulaS
Mohs Hardness1.5
Crystal Systemorthorhombic
Lusterresinous
Streak Coloryellow
Cleavagepoor/imperfect
Fractureconchoidal
Specific Gravity2.07
Colorsyellow, orange-yellow
Transparencytransparent
Type LocalitySicily, Italy
Mineral GroupNative Elements
Usesindustrial, chemical production, fertilizers, fungicides, collector
Associated Mineralscalcite, aragonite, gypsum, celestine
Rarityuncommon

Description

The image displays a vibrant cluster of bright yellow, translucent sulfur crystals, exhibiting well-formed, often blocky or pyramidal shapes, growing on an unseen matrix.

Geological Context

Sulfur commonly forms in sedimentary evaporite deposits through bacterial reduction of sulfates, or in volcanic environments from fumarolic activity. The specimens from Sicily are typically associated with evaporite formations.

Related Specimens