Science & Nature - Chalconatronite: a rare copper carbonate formed on bronze
Science & Nature · 0:49
Chalconatronite is a rare secondary mineral containing copper, sodium, carbon, hydrogen, and oxygen. Its name combines the Greek word for copper, chalcos, with natron, a natural sodium carbonate. Scientists believe chalconatronite develops when water carrying alkali carbonates, potentially from soil, reacts directly with bronze artifacts. Chemically related to minerals like malachite and azurite, chalconatronite is partially soluble in water and dissolves in cold dilute acids before decomposing. Though unusual, geologists have recorded natural occurrences of the mineral across Australia, Germany, and Colorado.
Source: Wikipedia
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