Mineral resources

The minimum percentage grade that is economic to mine

The percentage of metal content in an ore

A mineral that contains a compound of metal

Minerals that have no commercial value

The amount of mineral in the entire lithosphere

Materials found in the earth that people need and value

The amount of mineral that is economically viable to extract

the crystallization and removal of different minerals from the cooling magma

Rocks that undergo a physical change due to extreme heat and pressure

A mass of rock formed when a large body of magma cools inside the crust

Water that has percolated through a solid and leached out some of the constituents.

A rigid layer made up of the uppermost part of the mantle and the crust.

A measure of how clear water is.

changes metal sulphide ores into sulphate ores

changes metal sulphate ores back into sulphide ores

The upper level of the saturated zone of groundwater

A natural salt or mineral deposit left after the evaporation of a body of water.

These include the iron oxide deposits produced by the reaction of dissolved iron minerals with the oxygen produced by photosynthesis.

Chalk, limestone, coal, oil

Made when heat, pressure, or fluids change one type of rock into another type of rock

Growing and/or harvesting plants and trees that grow in mineral rich areas then burning them and collecting the minerals from the ash

Uses microorganisms and chemicals to extract minerals.

Used to carry out magnetic surveys

Used to carry out gravity surveys