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A copper sulphide mineral of secondary enrichment

An geophysical instrument used to measure magnetic strength and shape

A silvery white, soft alkaline rare-earth metal. Symbol, Cs

Strata layers and folds that dip toward a common center

The common ore of the metal chromium

The separation of particles by density by spinning the mix of minerals quickly in a cyclone

A halogen element, Symbol, Cl

The era following the Mesozoic Era, known as the Era of Mammals

A tool used to cut or chip rock having chisel-shaped cutting edge at its tip

Any calcined mixtures of clay and limestone, usually mixed with water, and gravel and/or sand