Aurichalcite

Part of speech: noun

Definitions

1. A mineral composed mainly of zinc and copper, typically found in a bluish-green color; it is often associated with other minerals like calcite or malachite; the mineral may also have historical significance in metallurgy as an alloy material
2. A naturally occurring mineral bearing zinc and copper, recognized for its distinctive bluish-green hue, often occurring alongside other minerals; it has been studied for its potential metallurgical applications in ancient times
3. A rare mineral that primarily contains zinc and copper, often appearing in shades of blue-green; it commonly forms in conjunction with minerals such as calcite; its historical relevance includes possible use in ancient metal alloys

Etymology: Aurichalcite takes its name from "aurichalcum," a Latin name for a golden-looking copper alloy, which in turn echoes the older "orichalcum," the Greek "oreikhalkos" (literally "mountain copper"). The Latin form is built from "aurum" (gold) and "chalcum" (copper), so the name was a description of the metal's appearance: a copper alloy that could pass for gold. Ancient writers used the term for a prized brass-like material, and Plato's story of Atlantis famously describes orichalcum as one of its precious metals. The mineral was named after that metal. Its name transferred from the alloy to the zinc-copper carbonate that gives the mineral its distinctive pale blue-green color, which matches the old description of a copper-based material with a golden-tinged sheen. The modern name therefore preserves an ancient metallurgical term, though the mineral itself is not the same substance the ancients worked with.