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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 ]
Copper Queen Mine Tour, Sept 2008 Classic Bisbee Azurite and Malachite specimen from the Copper Queen mine. This specimen was in the personal collection of Dr. James Douglas, and was later donated to the Smithsonian by his son. [1] The Copper Queen Mine was a copper mine in Cochise County, Arizona, United States.
Azurite has a dark, rich blue color - its formula, Cu3(CO3)2(OH)2, is very close to malachite. The blue color of azurite is from Cu+, while the green color of malachite is from Cu+2. Azurite & malachite almost invariably occur together, and are telling indicators of copper in the field, even in very small quantities.
Azure spar, sometimes azur-spar, is a trivial and commercial, partly obsolete name for several of the most famous bright blue or blue-colored minerals, which also have similar names, most notably for lazurite and azurite, [1]: 14 and also for the less commonly used lazulite.
The Ray mine has one of the largest copper reserves in the United States, with proven and probable reserves of 835.7 million tonnes (822,500,000 long tons; 921,200,000 short tons) of ore grading 1.73% copper, as of December 31, 2018. [2] [3] [4] Copper from the Ray mine goes to the Hayden Smelter.
The Moab Man (also called "Malachite man") is a find of several human skeletons found after bulldozing in a mine whose rock dated to the Early Cretaceous period, about 140 million years ago. The original discovery of two individuals was made in 1971 by Lin Ottinger in the Keystone Azurite Mine near Moab , Utah , and has been used by ...
It is alternatively called azuromalachite, azurite-malachite and malachite-azurite. [2] Azurmalachite has a distinctive mottled green and blue coloration. It is relatively rare but can sometimes be found above copper deposits. The main sources for mined azurmalachite are the United States, France, and Namibia. [3]
Associated minerals are quartz, limonite, azurite, malachite, cuprite, and other secondary copper minerals. It is typically found as botryoidal or rounded masses and crusts, or vein fillings. A 2006 study has produced evidence that chrysocolla may be a microscopic mixture of the copper hydroxide mineral spertiniite , amorphous silica and water.