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Bismuth (native) identification and geology

Native bismuth forming distinctive iridescent hopper crystals. Has the lowest thermal conductivity of any metal except mercury. Color: Silver-white with pinkish tinge, iridescent oxide. Luster: Metallic. Streak: Silver-white. Cleavage: Perfect basal. Hardness: 2-2.5. Transparency: Opaque. Crystal system: Hexagonal Trigonal. Chemical formula: Bi. Specific gravity: 9.7-9.8. Formation: Forms in hydrothermal veins and granitic pegmatites, often associated with tin and tungsten ores. Common geological settings: Australia, Bolivia, Germany, China; found in pegmatites and hydrothermal veins. Common look-alikes and related entries: Silver, Antimony, Galena.

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Sources, scope & corrections

These authoritative resources support category-level nomenclature, terminology, identification methods, and safety. When a specimen-specific safety warning appears, the public-health source listed here directly supports that precaution. They are not line-by-line citations for every other property on this entry, and natural specimens vary.

Editorial owner
GeoMiner
Last updated
2026-02-10T20:23:37.952169+00:00
Review status
Published; not independently peer-reviewed
  • IMA–CNMNC List of Mineral Names — International Mineralogical Association. Official mineral-name, nomenclature, and classification records.
  • Mineral ID Key — Mineralogical Society of America. Physical-property identification methods, repeat-testing guidance, and limitations.

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Common questions

What is Bismuth native?
Native bismuth forming distinctive iridescent hopper crystals. Has the lowest thermal conductivity of any metal except mercury.
How can you identify Bismuth native?
Compare several properties rather than relying on colour alone. This entry records colour: Silver-white with pinkish tinge, iridescent oxide; lustre: Metallic; streak: Silver-white; Mohs hardness: 2-2.5; cleavage: Perfect basal; crystal system: Hexagonal Trigonal; transparency: Opaque. Confirm an important identification with additional field tests or qualified laboratory work.
How does Bismuth native form?
Forms in hydrothermal veins and granitic pegmatites, often associated with tin and tungsten ores.
Where is Bismuth native commonly found?
Australia, Bolivia, Germany, China; found in pegmatites and hydrothermal veins.
What is Bismuth native commonly confused with?
Bismuth native may be confused with Silver, Antimony, Galena. Compare multiple diagnostic properties because colour and surface appearance can overlap.

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