| 41. | "' Azurite "'is a soft, deep blue copper mineral produced by weathering of copper ore deposits.
|
| 42. | Brochantite is often associated with minerals such as malachite, azurite, and chrysocolla, and may form pseudomorphs with these minerals.
|
| 43. | In the 18th century Russian industrialists used ancient dumps, rich in copper minerals, as a source of malachite and azurite.
|
| 44. | Sometimes the name is used for ( ) 2 ( ) 2, a blue crystalline solid also known as the mineral azurite.
|
| 45. | From the above equation, the conversion of azurite into malachite is attributable to the low partial pressure of carbon dioxide in air.
|
| 46. | True lapis lazuli was chiefly supplied from Afghanistan during the Middle Ages while azurite was a common mineral in Europe at the time.
|
| 47. | Azure also describes the color of the mineral azurite, both in its natural form and as a pigment in various paint formulations.
|
| 48. | In antiquity it was known for silver mines, currently minerals including azurite, chalcoalumite, calcite, austinite and adamite are found.
|
| 49. | Below that pressure, it reacts with water to form a basic carbonate ( azurite, ( ) 2 ( ) 2 ).
|
| 50. | Due to a shortage of azurite in the late 16th and 17th century, the price for the already-expensive ultramarine increased dramatically.
|
