Kupfer ∙ cuivre ∙ rame ∙ cobre
group I: R2O
- melting point: 1083°C
- boiling point: 2567°C
- density: 8.96 g/cm³
Bell metal is a hard form of bronze with a higher tin content (22%) used for making bells. — Wikipedia
minerals:
Copper Cu
Chalcopyrite CuFeS2
Since the middle ages bronze bells have been stolen to cast cannons and cannon balls. — Abbaye Saint-Hilaire