M MineralystRock & Mineral Guide
Mineral

Stibnite

Stibnite — reference photo

Stibnite is a mineral with the chemical formula Sb2S3. It has a Mohs hardness of 2.0 - 2.5 and metallic luster.

Stibnite properties

TypeMineral
Chemical formulaSb2S3
Mohs hardness2.0 - 2.5
LusterMetallic
Typical colorsLead-gray to steel-gray, often with a bluish tint
FormationTypically forms in hydrothermal veins and at fumarole deposits
Rarity5 / 10

Mohs hardness 2–2.5 — very soft

1 · Talc5 · Apatite10 · Diamond
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