| A | B |
|---|
| identified resources | USGS classification of deposits of a nonrenewable mineral resourced with a known location, quantity, and quality, or whose existence is based on direct geologic evidence and measurements |
| undiscovered resources | USGS classification of potential supplies of a nonrenewable mineral resource assumed to exist on the basis of geologic knowledge and theory but with unknown specific locations, quality, and amounts |
| reserves | USGS classification of identified resources from which a usable nonrenewable mineral can be extracted profitably at currrent prices |
| other resources | USGS classification of undiscovered resourced and identified resourced not classified as reserves |
| sand | nonmetallic mineral mosrly silicon dioxide used to make glass, bricks, and concrete for construction of roads and buildingd |
| gravel | a nonmetallic mineral used for roadbeds and to make concrete |
| limestone | nonmetallic mineral mostly calcium carbonate is crushed to make road rock, concrete, and cement |
| phosphate salt | nonmetallic mineral are mined and used in inorganic fertilizers and in some detergents |
| aluminum | metallic mineral used for packaging and beverage cans ans as a structural material in motor vehicles, aircrafft, and buildings |
| steel | metallic mineral which is essential material used in building and motor vehicles, is a mixture (alloy) of iron and other elements that are added to vary its properties. |
| copper | metallic mineral that is a good conductor of electricity, is used for electrical and communications wiring. |
| manganes, cobalt, and choromium | metallic mineral used in important steel alloys |
| platinum | metallic mineral used in electrical equipment and as a catalyst in industry and in automobile pollution control convertors |
| mineral | element or inorganic ompound that occurs naturally and is solid with a recular interal crystalline structure. |
| mineral resource | is a concentration of naturally occurring material in or on the earth's crust that can be extracted and processed into useful materials at an affordable cost. |
| nonrenewable mineral resources | fossil fuels, metallic minerals, nonmetallic minerals |
