Definitions for the language of the gold mining industry
Acid mine drainage
Acidic run off water from mine waste dumps and mill tailings ponds containing sulphide minerals. Also refers to contaminated ground water pumped to surface from mines.
Igneous rock carrying a high (greater than 65%) proportion of silica.
An opening driven horizontally into the side of a mountain or hill for providing access to a mineral deposit.
A geophysical survey using a magnetometer aboard, or towed behind, an aircraft.
A breccia composed largely or entirely of fragments of volcanic rocks.
A method of concentrating valuable minerals based on their adhesion properties.
In metallurgy, the act or state of being stirred or shaken mechanically, sometimes accomplished by the introduction of compressed air.
A survey made from an aircraft to obtain photographs, or measure magnetic properties, radioactivity, etc.
Is a mineral within the Feldspar Group which is the sodium rich end member of the Albite-Anorthite Series. It is a common type of hydrothermal alteration.
A compound of two or more metals.
Relatively recent deposits of sedimentary material laid down in river beds, flood plains, lakes, or at the base of mountain slopes. (adj. Alluvial)
The chemical change in a rock due to hydrothermal and other fluids.
A gneiss or schist largely made up of amphibole and plagioclase minerals.
Acronym for ammonium nitrate and fuel oil, a mixture used as a blasting agent in many mines.
A rectangular plate of metal cast in a shape suitable for refining by the electrolytic process.
Any departure from the norm which may indicate the presence of mineralisation in the underlying bedrock.
An arch or fold in layers of rock shaped like the crest of a wave.
A geological eon before 2.5 Ga.
An iron arsenic sulfide mineral.
A chemical test performed on a sample of ores or minerals to determine the amount of valuable metals contained.