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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]
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 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 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.
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 other copper minerals were being won.
At one time, lazurite was a synonym for azurite. [5] Lazurite was first described in 1890 for an occurrence in the Sar-e-Sang District, Koksha Valley, Badakhshan Province, Afghanistan. [3] It has been mined for more than 6,000 years in the lapis lazuli district of Badakhshan.
Azure spar, sometimes azur-spar (German: Lazur spath, Blau spath) 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 medieval azurite mines on the Blaufels and the Limberg is attested by bills from 1492. The azurite mine was therefore continued around St. Barbara in post-Roman times. In 1964 the first systematic excavations were carried out by the former Saarland Conservatory bureau.