Pyrite with chalcopyrite

Pyrite with chalcopyrite is a natural mineral association of two sulfides that can occur together in ore deposits. Pyrite (FeS₂) is an iron sulfide known for its distinctive cubic crystals, while chalcopyrite (CuFeS₂) also contains copper and may display striking blue, purple, or iridescent surface colors. Their association creates interesting contrasts in crystal forms and coloration.

Our collection features natural pyrite and chalcopyrite specimens from Mexico. Individual pieces vary in size, crystal arrangement, and the relative proportions of both minerals. These associations are particularly interesting for collectors of sulfide minerals and specimens illustrating natural ore-forming processes.

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