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Mining is the extraction of valuable minerals or other geological materials from the Earth usually from an ore body lode vein seam reef or placer deposit These deposits form a mineralized package that is of economic interest to the miner Ores recovered by mining include metals coal oil shale gemstones limestone chalk dimension
nbsp 0183 32 Mineral deposit aggregate of a mineral in an unusually high concentration About half of the known chemical elements possess some metallic properties The term metal however is reserved for those chemical elements that possess two or more of the characteristic physical properties of metals opacity ductility malleability fusibility and are also good conductors of heat and electricity
Philippines top precious metals and gems sales in 2018 are led by gold silver amp jewelry Gold jewelry with diamond The Philippines exported US 1 5 billion worth of precious metals and gems on international markets in 2018 well in excess of the 256 9 million spend by Filipino importers on those same commodities