Mining and Mineral Resources. Nonrenewable Mineral Resources . Earth crust = Minerals + rock Minerals – inorganic compound that occurs naturally in the earth’s crust Solid Regular internal crystalline structure. Rock – solid combination of 1 or more minerals .
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Minerals –inorganic compound that occurs naturally in the earth’s crust
of ore from
Life Cycle of a Metal Resource
Smelting – heating to release metals but creating air polluting by-products
Chemical removal processes such as using cyanide to remove gold can create Toxic holding ponds
in US extracts 90% of non-fuel minerals and rocks and 60% of the coal.
Area Strip Mining