Bornite identification and geology

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• Chalcopyrite
• Covellite
• Chalcocite

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

2026-03-30T14:36:57.956762+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 Bornite?

Copper iron sulfide known as peacock ore for its vivid iridescent purple-blue tarnish. Important copper ore mineral.

How can you identify Bornite?

Compare several properties rather than relying on colour alone. This entry records colour: Copper-brown fresh , purple-blue iridescent tarnished; lustre: Metallic; streak: Grayish-black; Mohs hardness: 3; cleavage: Poor; crystal system: Orthorhombic; transparency: Opaque. Confirm an important identification with additional field tests or qualified laboratory work.

How does Bornite form?

Forms in hydrothermal veins and porphyry copper deposits; also in contact metamorphic zones.

Where is Bornite commonly found?

Chile, Peru, Montana, Zambia; found in copper-bearing sulfide deposits.

What is Bornite commonly confused with?

Bornite may be confused with Chalcopyrite, Covellite, Chalcocite. Compare multiple diagnostic properties because colour and surface appearance can overlap.