higher ore grade

См. также в других словарях:

• Ore genesis — The various theories of ore genesis explain how the various types of mineral deposits form within the Earth s crust. Ore genesis theories are very dependent on the mineral or commodity. Ore genesis theories generally involve three components:… …   Wikipedia

• Iron ore — Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in colour from dark grey, bright yellow, deep purple, to rusty red. The iron itself is usually found in the …   Wikipedia

• Lateritic nickel ore deposits — are surficial, weathered rinds formed on ultramafic rocks.They comprise 73% of the continental world nickel resources and will be in the future the dominant source for the winning of nickel. Genesis and types of nickel laterites Lateritic nickel… …   Wikipedia

• Heavy mineral sands ore deposits — Heavy minerals (dark) in a quartz beach sand (Chennai, India). Heavy mineral sands are a class of ore deposit which is an important source of zirconium, titanium, thorium, tungsten, rare earth elements, the industrial minerals diamond …   Wikipedia

• Carbonate hosted lead zinc ore deposits — World wide distribution of MVT deposits, (red), clastic sediment hosted (green), and unclassified (blue) lead zinc deposits. Source: USGS Carbonate hosted lead zinc ore deposits are important and highly valuable concentrations of lead and zinc… …   Wikipedia

• Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and …   Wikipedia

• Natural resource economics — Economics …   Wikipedia

• Wellingborough — Coordinates: 52°17′38″N 0°41′47″W …   Wikipedia

• Channel-iron deposits — (CID) are iron rich fluvial sedimentary deposits of possible Miocene age occupying meandering palaeochannels in the Early to Mid Tertiary Hamerlsey palaeosurface of Western Australia. Examples are also known from Kazakhstan. The deposits are… …   Wikipedia

• Arizona breccia pipe uranium mineralization — During the late 1970s and through the 1980s, Mohave and Coconino County, Arizona, immediately north and south of the Grand Canyon and west of the Navajo Indian Reservation were explored for Arizona breccia pipe uranium mineralization. The search… …   Wikipedia

• Hubbert peak theory — Hubbert peak redirects here. For the episode of The West Wing, see The Hubbert Peak. M. King Hubbert s original 1956 prediction of world petroleum production rates …   Wikipedia