Minerals identify

Know how to recognize them

Azurite

Carbonate mineral

Azurite is a soft, deep-blue copper 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 with the chemical formula Cu3(CO3)2(OH)2, has been known since ancient times, and was mentioned in Pliny the Elder 's Natural History under the Greek name kuanos (κυανός: "deep blue," root of English cyan) and the Latin name caeruleum. Since antiquity, azurite's exceptionally deep and clear blue has been associated with low-humidity desert and winter skies. The modern English name of the mineral reflects this association, since both azurite and azure from the Persian lazhward (لاژورد), an area known for its deposits of another deep-blue stone, lapis lazuli ("stone of azure").

Identification

Color of mineral

Azure
Blue

Mohs scale ( mineral hardness )

3.5

The streak

Blue

Density ( specific gravity )

1.73
1.758
1.838

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Monoclinic