The Copper Age had three names and one argument
Between stone and bronze, people learned to smelt copper—yet Europe invented three labels for the same span: Copper Age, Eneolithic, Chalcolithic. Serbia's Belovode site holds the world's oldest securely dated copper smelting, while some regions skipped the phase entirely.
The Chalcolithic follows the Neolithic and precedes the Bronze Age wherever communities increasingly used smelted copper. It includes early cold-hammering of near-pure ores—as in North America's Old Copper complex from around 6500 BC—and later smelting cultures. Belovode on Rudnik mountain in Serbia preserves the earliest known copper smelting. A 2013 Antiquity study reported tin-bronze foil from Pločnik about 4650 BC plus other Balkan artefacts before 4000 BC, hinting early tin bronze was more common and independent than once assumed.
Nineteenth-century scholars scrambled for vocabulary. Ferenc Pulszky in the 1870s urged a Copper Age after Carpathian Basin finds broke the neat Stone–Bronze–Iron triad. John Evans in 1881 separated a transitional Copper Age from Bronze proper. Gaetano Chierici in 1884 coined Italian eneo-litica, bronze-stone, never meaning the only era using both materials. British writers borrowed Copper Age or Eneolithic; critics fretted that Eneolithic looked like outside the Neolithic, while Chalcolithic sounded like another Stone Age despite the metal. Today the three terms are synonyms for Evans's copper-before-bronze definition.
Metallurgy may have begun in the Fertile Crescent. Lead could have been first smelted because galena yields metal easily; candidates include beads from Çatalhöyük's Level IX that might be galena, cerussite, or true lead. Naming debates aside, the Copper Age marks the moment soft red metal taught humans that rocks could become tools—and that alloys would soon rewrite the toolkit again across Eurasia.
Source: Chalcolithic