Bismuthinite

Bismuthinite is a bismuth sulfide mineral (Bi₂S₃) with a distinctive lead-grey metallic luster that appeals to collectors of rare sulfide minerals. This orthorhombic mineral forms elongated prismatic crystals and acicular (needle-like) aggregates, often with striated faces that catch light at different angles.
Our bismuthinite specimens originate from hydrothermal vein deposits where bismuth-bearing solutions deposited this sulfide mineral alongside quartz, pyrite, and other gangue minerals. Bismuthinite occurs in granite-related ore systems and pegmatite veins worldwide, though fine crystallized specimens are uncommon enough to be genuinely collectible. The mineral is the primary ore of bismuth — an element used in pharmaceuticals, cosmetics, and low-melting-point alloys.
With a Mohs hardness of only 2, bismuthinite is very soft and requires gentle handling. Its perfect cleavage and sectile nature mean it can be deformed by pressure, so display these specimens in padded, enclosed cases. The metallic luster and crystal habit of quality bismuthinite make it a handsome addition to a systematic mineral collection. Browse our bismuthinite specimens for carefully selected examples of this interesting bismuth sulfide mineral.