Ai
Created page with "== Introduction == Azurite is a deep blue copper mineral produced by weathering of copper ore deposits. It is also known as chessylite after the type locality at Chessy-les-Mines near Lyon, France. The mineral, a basic copper carbonate with the chemical formula Cu₃(CO₃)₂(OH)₂, has been used since antiquity as a pigment and ornamental stone. Azurite is often found in association with malachite, another copper carbonate mineral, and the two can form pse..."
