mineral
Sulfur
Native Sulfur (S8)
AI-generated identification · may be incorrectHardness: 1.5-2.5 (Mohs); Color: Bright yellow to pale greenish-yellow; Luster: Resinous to greasy; Crystal structure: Orthorhombic; Cleavage: Poor; Specific Gravity: 2.07
- Hardness
- 1
- Color
- Bright yellow to pale greenish-yellow
- Luster
- Resinous to greasy
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Physical properties
Hardness: 1.5-2.5 (Mohs); Color: Bright yellow to pale greenish-yellow; Luster: Resinous to greasy; Crystal structure: Orthorhombic; Cleavage: Poor; Specific Gravity: 2.07
Formation & geological history
Formed via volcanic sublimation from fumaroles (gas vents) or through the decomposition of sulfate minerals. Found in evaporite deposits and volcanic regions. This specimen's pale yellow color and porous texture are consistent with volcanic sublimation.
Uses & applications
Primary source for manufacturing sulfuric acid, fertilizers, rubber vulcanization, matches, and pharmaceuticals. Collector specimens are valued for their color.
Geological facts
Native sulfur is often called 'brimstone' in historical texts. It has a distinctive odor when rubbed or burned (resembling rotten eggs due to sulfur dioxide release) and burns with a blue flame.
Field identification & locations
Identify by its bright yellow color, low hardness (can be scratched by a fingernail), and low density. Given the coordinates in Sicily, Italy, this is extremely common due to the proximity of Mt. Etna and historical sulfur mines.
