Knowra Economic geology Economic geology Economic geology studies Earth materials with economic value, including how they occur and form, how deposits are evaluated, and how resources are extracted.
Ore deposit : A natural concentration of minerals or rocks that can be extracted profitably under specified conditions. The central object of economic geology is a deposit whose material and setting may support extraction.
Hydrothermal circulation : The movement of heated, chemically reactive water through rocks and fractures. Hydrothermal fluids transport metals and precipitate them where temperature, pressure, or chemistry changes.
Mineral exploration : The search for mineral deposits using geological, geochemical, geophysical, and remote-sensing evidence. Exploration applies geological models to identify and test prospective targets.
Acid mine drainage : Acidic, metal-bearing water produced when sulfide minerals are exposed to oxygen and water. Mining sulfide deposits can trigger long-lived drainage that requires treatment and monitoring.
Mineral occurrence : A natural presence of a mineral or element, without necessarily implying economic significance. An occurrence may be geologically real but too small, low-grade, or inaccessible to qualify as a resource.
Mineral resource : A concentration of material in Earth’s crust with reasonable prospects for eventual economic extraction. Resource classification connects geological evidence to possible future production.
Magmatic differentiation : The processes by which a magma changes composition as minerals crystallize, separate, or react with it. Differentiation can concentrate metals and minerals into deposits associated with igneous rocks.
Mineral resource estimation : The process of estimating a deposit’s tonnage, grade, geometry, and uncertainty from geological and assay data. Estimation quantifies the material available for technical and economic assessment.
Mine reclamation : The process of restoring mined land toward an agreed post-mining condition and use. Economic geology informs closure plans by identifying materials and hazards left by extraction.
Mineral resource classification : A system for categorizing mineral resources by geological confidence and prospects for eventual economic extraction. Classification distinguishes inferred geological potential from better-supported resource estimates.
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