mineral

Sulfur on matrix

Native Sulfur (S8)

Hardness: 1.5-2.5 on Mohs scale; Color: Bright yellow to yellowish-brown; Luster: Resinous to adamantine; Crystal structure: Orthorhombic; Cleavage: Imperfect; Specific gravity: 2.07

Hardness: 1
Color: Bright yellow to yellowish-brown
Luster: Resinous to adamantine

Identified June 4, 2026More mineral →

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Physical properties

Hardness: 1.5-2.5 on Mohs scale; Color: Bright yellow to yellowish-brown; Luster: Resinous to adamantine; Crystal structure: Orthorhombic; Cleavage: Imperfect; Specific gravity: 2.07

Formation & geological history

Formed primarily through the sublimation of volcanic gases around fumaroles, or via the bacterial reduction of sulfate minerals like gypsum in sedimentary environments.

Uses & applications

Used extensively in the chemical industry for sulfuric acid production, fertilizers, gunpowder, matches, and insecticides. Scientific specimens are highly collected for their vibrant color.

Geological facts

Sulfur is known as 'brimstone' in historical texts. It has a very low melting point of about 115 degrees Celsius and emits a blue flame and suffocating odor when burned.

Field identification & locations

Identify by its distinctive bright yellow color and 'rotten egg' smell when rubbed or heated. It feels greasy to the touch and is very brittle. Often found in volcanic regions or salt domes.