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  2. Native copper - Wikipedia

    en.wikipedia.org/wiki/Native_copper

    Native copper is an uncombined form of copper that occurs as a natural mineral. Copper is one of the few metallic elements to occur in native form, although it most commonly occurs in oxidized states and mixed with other elements. Native copper was an important ore of copper in historic times and was used by pre-historic peoples.

  3. Chino mine - Wikipedia

    en.wikipedia.org/wiki/Chino_Mine

    McKnight and Courcier profited greatly from the rich copper mining operation and amassed a large fortune from it. [6] Native copper from Chino (size: 11.2 x 9.3 x 0.4 cm). Chino is well known among mineral collectors for its many native-copper specimens [7] Santa Rita was located in the heart of Apache country and was plagued by Apache raids.

  4. New Cornelia mine - Wikipedia

    en.wikipedia.org/wiki/New_Cornelia_mine

    Photo: NASA Native copper specimen from the New Cornelia mine. Size 6.4 x 4.7 x 4.6 cm. Shattuckite with malachite, polished specimen, New Cornelia mine. Size 5.3 x 5.1 x 5.0 cm. The New Cornelia mine is a currently inactive open-pit copper mine in Pima County, Arizona, United States.

  5. List of copper mines in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_mines_in...

    Native copper Mined from 1848 to 1870 Nonesuch: Ontonagon County, Michigan: Native copper Closed since 1912 Quincy: Hancock, Houghton County, Michigan: Quincy Mining Co. Strataform native copper Closed since 1945. Now part of Keweenaw National Historical Park: Cliff: Keweenaw County, Michigan: Pittsburgh & Boston Mining Co. Vein native copper

  6. Native metal - Wikipedia

    en.wikipedia.org/wiki/Native_metal

    The term Old Copper Complex is used to describe an ancient North American civilization that utilized native copper deposits for weapons, tools, and decorative objects. This society existed around Lake Superior , where they found sources of native copper and mined them between 6000 and 3000 BC. [ 9 ]

  7. Metallurgy in pre-Columbian America - Wikipedia

    en.wikipedia.org/wiki/Metallurgy_in_pre...

    After the collapse of the Mississippian way of life in the 1500s with the advent of European colonization, copper still retained a place in Native American religious life as a special material. Copper was traditionally regarded as sacred by many historic period Eastern tribes. Copper nuggets are included in medicine bundles among Great Lakes ...

  8. Conservation and restoration of copper-based objects

    en.wikipedia.org/wiki/Conservation_and...

    In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. [12] Copper metallurgy was flourishing in South America, particularly in Peru around 1000 AD; it proceeded at a much slower rate on other ...

  9. Mineral collecting - Wikipedia

    en.wikipedia.org/wiki/Mineral_collecting

    Malachite specimen from the Copper Queen Mine, Bisbee, Arizona. Dr Douglas saved many of the best mineral specimens from the Copper Queen for his personal collection. His family later donated many of them to the Smithsonian. Andrew Ketcham Barnett (1852–1914), principal, Penzance School of Mines

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