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A chemical change caused by the introduction of oxygen

Where older rock beds have been moved over younger rock beds

Exposed rock or mineralization at surface

The period of geological time where the Earth’s crust folded sufficiently to create mountains

A continuous structure of rock having similar metamorphosis or deformation

A length of mineralization in an orebody

A vertical or sloping passage or chute used to convey ore to a connecting level or passage

A defined mass of materials evaluated to contain a known percentage of target minerals

Rocks outlined or extracted for the purpose of extracting target minerals