Search results
Results from the WOW.Com Content Network
Azurite from Burra Mine, South Australia. Azurite is found in the same geologic settings as its sister mineral, malachite, though it is usually less abundant. Both minerals occur widely as supergene copper minerals, formed in the oxidized zone of copper ore deposits. Here they are associated with cuprite, native copper, and various iron oxide ...
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 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.
This is a featured picture, which means that members of the community have identified it as one of the finest images on the English Wikipedia, adding significantly to its accompanying article. If you have a different image of similar quality, be sure to upload it using the proper free license tag , add it to a relevant article, and nominate it .
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate
Photography By Tonelson - Getty Images Sorry to break the news, but American cheese is not real cheese. It contains cheese, but not in large enough amounts to bear the title.
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.
Days Later, She Found Out It Was Stage 4 Cancer (Exclusive) From there, things began to get worse. Andalusia recalls seeing Caper’s eye twitch and thinking that she was witnessing a seizure.