mineral
Sulfur (in host rock)
Native Sulfur (S8)
AI-generated identification · may be incorrectHardness: 1.5 - 2.5 on Mohs scale; Color: Bright yellow to pale yellow/greenish; Luster: Resinous to adamantine; Crystal Structure: Orthorhombic; Cleavage: Imperfect/Poor; Specific Gravity: 2.07
- Hardness
- 1
- Color
- Bright yellow to pale yellow/greenish
- Luster
- Resinous to adamantine
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Physical properties
Hardness: 1.5 - 2.5 on Mohs scale; Color: Bright yellow to pale yellow/greenish; Luster: Resinous to adamantine; Crystal Structure: Orthorhombic; Cleavage: Imperfect/Poor; Specific Gravity: 2.07
Formation & geological history
Usually forms as a sublimate from volcanic gases (solfataras), near hot springs, or by the breakdown of sulfide minerals and sulfate deposits through bacterial action or thermal decomposition.
Uses & applications
Used primarily in the industrial production of sulfuric acid, fertilizers, gunpowder, matches, and insecticides. Some high-quality crystal specimens are sought by collectors.
Geological facts
Sulfur has been known since ancient times and is referred to in the Bible as 'brimstone.' It burns with a blue flame and emits a suffocating odor of sulfur dioxide.
Field identification & locations
Identify by its distinctive bright yellow color, low hardness (can be scratched by a fingernail), and the faint odor of rotten eggs if struck or heated. Commonly found in volcanic regions like Sicily, Italy, or the Andes mountains.
