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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 is a naturally occurring mineral found particularly in copper-mining areas of the world. [4] It is often found with malachite , a green basic carbonate of copper . There is evidence that azurite has been used since the dawn of modern civilization, dating back to the Fourth Dynasty in Egypt. [ 1 ]
Azurite pigment is derived from the soft, deep-blue copper mineral of the same name, which forms from the weathering of copper ore deposits. It 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.
A revolutionary development in American copper mining took place when mining engineer Daniel Cowan Jackling conceived of mining the huge but low-grade copper ore body at Bingham Canyon, Utah, using steam shovels in a big open pit. Steam shovels had previously been used in the iron mines of the Mesabi Range, in Minnesota, but had not been used ...
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.
Copper has been mined on and off at Whim Creek over a period of 120 years. Copper was mined initially via a series of small adits and stopes into the Whim Creek and Mons Cupri deposits by artisanal miners, [1] with records indicating that as early as 1882 small quantities of malachite, azurite, chrysocolla and
By then the United Verde Mine had become the leading copper producer in the Arizona Territory, employing about 800 men, [20] and was one of the largest mines in the world. [22] Over its 77-year life (1876 to 1953), this mine produced nearly 33 million tons of copper, gold, silver, lead and zinc ore. [ 10 ]