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Azurite or Azure spar [5]: 14 is a soft, deep-blue copper mineral produced by weathering of copper ore deposits. During the early 19th century, it was also known as chessylite , after the type locality at Chessy-les-Mines near Lyon , France . [ 3 ]
Azurite was frequently used in European Renaissance painting. It appears, for example, in the dark blue sky of a Spanish altarpiece painting by Bartolome Bermejo. [8] In this painting, azurite is also combined with lead white to paint the green robe of the Saint. [8] During this time, azurite was a common pigment used to paint a blue sky. [1]
Fine-ground azurite produces a lighter, washed-out color. Traditionally, the pigment was considered unstable in oil paints, and was sometimes isolated from other colors and not mixed. The use of the term spread through the practice of heraldry, where "azure" represents a blue color in the system of tinctures.
Color: Deep blue, azure, violet-blue, greenish blue: ... but are easily distinguished with careful examination. At one time, lazurite was a synonym for azurite. [5]
Azurite or copper azure is an opaque or slightly translucent mineral, copper bicarbonate in composition with the ideal formula Cu 3 (СО 3) 2 (ОН) 2, having a bright blue color, one of the most common secondary minerals containing copper, also known as azure spar.
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The modern English name of the mineral reflects this association, since both azurite and azure are derived via Arabic from the Persian lazhward (لاژورد), an area known for its deposits of another deep-blue stone, lapis. Azurite was often used in the Renaissance and later as a less expensive substitute for ultramarine. Lower layers would ...