platinum group elements
41Ruthenium — Eigenschaften …
42Gold mining in Alaska — Gold mining in Alaska, a state of the United States, has been a major industry and impetus for exploration and settlement since a few years after the United States acquired the territory from Russia. Russian explorers discovered placer gold in… …
43Nickel — This article is about the chemical element. For other uses, see Nickel (disambiguation). cobalt ← nickel → copper ↑ Ni ↓ Pd …
44Native element minerals — are those elements that occur in nature in uncombined form with a distinct mineral structure. The elemental class includes metals and intermetallic elements, semi metals and non metals. This group also includes natural alloys, phosphides,… …
45Circum-Superior Belt — Map of cratons, orogenies and the Circum Superior Belt. Areas associated with the Circum Superior Belt include …
46Otto Hahn — Hahn in 1944 Born 8 March 1879 …
47Merensky Reef — Mines of the Merensky Reef The Merensky Reef, is a layer of igneous rock in the Bushveld Igneous Complex (BIC) in the Transvaal which together with an underlying layer, the Upper Group 2 Reef (UG2), contains most of the world s known reserves of… …
48Mining industry of Russia — The mineral industry of Russia is one of the world s leading mineral industries and accounts for a large percentage of the Commonwealth of Independent States production of a range of mineral products, including metals, industrial minerals, and… …
49Mineral industry of Russia — Russia is one of the world’s leading mineral producing countries and accounts for a large percentage of the CIS’s production of a range of mineral products, including metals, industrial minerals, and mineral fuels. In 2005, Russia ranked among… …
50Dacian bracelets — Dacian gold bracelet, dated to 1st century BC – 1st century AD, from Sarmizegetusa Romania [1][2] …
