mineral
Sulfur on Quartz
Native Sulfur (S8) with Quartz (SiO2)
AI-generated identification · may be incorrectHardness: 1.5-2.5 (Sulfur) / 7 (Quartz); Color: Bright yellow on white/clear; Luster: Resinous to Vitreous; Crystal Structure: Orthorhombic (Sulfur) / Trigonal (Quartz); Specific Gravity: 2.0-2.1 (Sulfur).
- Hardness
- 1
- Color
- Bright yellow on white/clear
- Luster
- Resinous to Vitreous
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Physical properties
Hardness: 1.5-2.5 (Sulfur) / 7 (Quartz); Color: Bright yellow on white/clear; Luster: Resinous to Vitreous; Crystal Structure: Orthorhombic (Sulfur) / Trigonal (Quartz); Specific Gravity: 2.0-2.1 (Sulfur).
Formation & geological history
Formed as a secondary mineral via sublimation from volcanic gases (fumaroles) or through the weathering of sulfide minerals. Often found in hydrothermal veins and evaporite deposits.
Uses & applications
Sulfur is used in the manufacture of sulfuric acid, fertilizers, gunpowder, and rubber vulcanization. Specimens are highly valued by collectors for their vibrant color.
Geological facts
Sulfur is famous for its 'rotten egg' smell when burned or reacted. It has been known since ancient times and is referred to as 'brimstone' in the Bible.
Field identification & locations
Identify in the field by its distinct bright yellow color, low melting point, and faint odor when rubbed. Commonly found near active volcanoes, hot springs, and in underground salt domes.
