What is Famatinite?
Famatinite is a copper antimony sulfide found in hydrothermal ore deposits and valued by collectors for its dark metallic crystals and geological associations.
Mineralogy and structure
Reference formula: Cu3SbS4. Famatinite has the ideal formula Cu3SbS4 and a tetragonal structure. It forms a solid-solution series with luzonite, so analytical or locality information can matter for a species-level label.
Colour and appearance
Typical colours include steel grey, black, grey. The usual tetrahedral, granular, massive habit and metallic lustre are useful descriptive features, but colour alone is not diagnostic.
Formation and localities
Famatinite forms in or is associated with high-temperature hydrothermal copper-antimony veins and polymetallic ore deposits. Important documented localities include Bolivia, Peru, Germany, Romania, Mexico and the United States.
Collecting and care
Antimony-bearing sulfide; keep as a labelled display specimen and avoid cutting, grinding or generating dust.
Famatinite in ore-mineral collections
The dark metallic surface of Famatinite often makes it a compelling reminder of hidden geological processes: collectors value the evidence of heat, fluids and metal transport preserved in a small specimen. That is a cultural and collecting interpretation, not a claim about effects on a person.
Traditional associations
Popular crystal lists sometimes connect dark metallic minerals with grounding or protection themes. Any zodiac or birthstone association for Famatinite varies by tradition and is not a mineralogical property.
