Mineral Resources Metal Ores Non-metallic minerals Gems
Metal ores From cooling magma (Cr, Ni, Pb) –Rock cools, heavy metals settle to bottom From contact metamorphism (Pb, Cu, Zn) –Heat changes chemical composition to ore From hydrothermal solutions creating contact metamorphism – Minerals dissolve into solution, solution enters cracks, new minerals form and precipitate out into “veins” From moving water –Fragments settle out as placer deposits
Mining Removing resources faster than nature can replace them –Subsurface –Surface –Placer –Undersea
Nonrenewable Energy Used faster than can be replenished or is not likely to be replenished (limited) Fossil fuels –Formed from remains of living things –Coal –Petroleum –Natural gas –Oil traps (shale)
Coal Massive plant deposits Carbonization of peat Produces methane, carbon dioxide and coal in the absence of oxygen (swamps)
Resources and Conservation Weigh options; positive vs. negative Choose cleanest available option Regulate, clean up and reclaim Resources used for more than just energy, so……… Conserve all resources Uses of minerals in your home
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