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Cu
(Encyclopedia)Cu, symbol for the element copper. ...Clark, William Andrews
(Encyclopedia)Clark, William Andrews, 1839–1925, U.S. Senator and copper magnate, b. Fayette co., Pa. He moved to Montana, where he amassed a large fortune from the development of copper mines. He wielded immense...verdigris
(Encyclopedia)verdigris vûrˈdəgrēsˌ [key], one of three copper acetates: blue verdigris, Cu(CH3COO)2·CuO·6H2O; green verdigris, 2Cu(CH3COO)2·CuO·6H2O; or neutral verdigris, Cu(CH3COO)2·H2O; or a mixture o...brass
(Encyclopedia)brass, alloy having copper (55%–90%) and zinc (10%–45%) as its essential components. The properties of brass vary with the proportion of copper and zinc and with the addition of small amounts of o...chalcopyrite
(Encyclopedia)chalcopyrite pīrīˈtēz, pə– [key], brass-yellow mineral, sometimes with an iridescent tarnish. It is a sulfide of copper and iron, CuFeS2 . It crystallizes in the tetragonal system but is usua...Butte, city, United States
(Encyclopedia)Butte byo͞ot [key], city (2020 pop. 34,494), seat of Silver Bow co., SW Mont.; inc. 1879. It...malachite
(Encyclopedia)malachite mălˈəkīt [key], a mineral, the green basic carbonate of copper occurring in crystals of the monoclinic system or (more usually) in masses. It is translucent or opaque; the luster is silk...Daly, Marcus
(Encyclopedia)Daly, Marcus, 1841–1900, American copper magnate, b. Ireland. He went to New York City at 15 and later moved to California, where he worked as a miner. He was employed by the “silver kings,” J. ...Paris green
(Encyclopedia)Paris green, also called Schweinfurt green, an extremely poisonous, bright green powder that was formerly used extensively as a pigment (e.g., in wallpaper) and that is sometimes used as an insecticid...Avesta, city, Sweden
(Encyclopedia)Avesta äˈvəstäˌ [key], city (1990 est. pop. 16,860), Kopparberg co., S central Sweden, on the Dalälven River. Aluminum and high quality steel are manufactured there. Formerly a copper mining and...Browse by Subject
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