mineral

Sulfur (native sulfur)

Native sulfur, S₈

AI-generated identification · may be incorrect

Bright yellow to pale yellow, earthy-to-resinous luster, brittle, and commonly found as irregular masses or crystals. Mohs hardness 1.5–2.5; orthorhombic crystal structure; specific gravity about 2.0–2.1. The photo’s color and texture suggest sulfur, but identification from an image alone is uncertain.

Identified September 26, 2026More mineral →

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Physical properties

Formation & geological history

Forms around volcanic vents and fumaroles, and through microbial or chemical processes in sedimentary evaporite deposits. Sulfur deposits formed across many geological ages.

Uses & applications

Used chiefly to manufacture sulfuric acid and fertilizers; smaller amounts are used in chemicals, rubber processing, and educational or mineral collections.

Geological facts

Native sulfur is one of the few minerals commonly recognized by its vivid yellow color; it can burn with a blue flame and produce irritating sulfur dioxide.

Field identification & locations

Look for lightweight, brittle, yellow material near volcanic areas or evaporite deposits; avoid heating or burning unknown samples. Common sources include Sicily, Indonesia, and sulfur-bearing regions worldwide.