Chapter 12: Mineral Resources
Chapter 12: Mineral Resources GEOL 1005
Popular in Environmental Geology
Popular in Geology
This 3 page Class Notes was uploaded by Kerrigan Unter on Monday October 19, 2015. The Class Notes belongs to GEOL 1005 at George Washington University taught by Brown, C in Summer 2015. Since its upload, it has received 19 views. For similar materials see Environmental Geology in Geology at George Washington University.
Reviews for Chapter 12: Mineral Resources
Report this Material
What is Karma?
Karma is the currency of StudySoup.
Date Created: 10/19/15
GEOL 1005 Chapter 12 Mineral Resources 12 What Mineral Resources Are Mineral Resources naturally occurring solid materials in or on Earth s crust from which we can currently or potentially extract a useful commodity Mineral deposits concentrations of useful minerals in Earth s crust Ore part of a mineral deposit that can be profitable mined and recovered at current and projected commodity prices How ore deposits form Hot oceanic crust and water along the sea oor Magma solidifying in shallow crust and releasing dissolved metals Rocks dehydrate and release waterrich uids Sediments deposited on ocean oor Veins long narrow sheetlike structures Other ore deposits may be discontinuous podshaped or lensshaped Grade concentration of valuable mineral or element in a mineral deposit Open pit surface excavation to extract useful rocks or minerals 122 Finding Mining and Processing Mineral Resources Surface samples are analyzed by geochemical techniques Subsurface relations are investigated with geophysical techniques Methods on extraction and processing Trenching Drilling Openpit mining Infrastructure Underground mining Milling Flotation Tailing Leaching Metallurgy Prospect an area that is a potential site of mineral deposits Cores cylinder of solid rock cut by a drill and brought to the surface for geological examination and sampling Waste rock rock that must be broken and disposed of in order to gain access to and excavate ore Adit horizontal opening into a hillside Decline inclined from the surface downward Benefication separates and concentrates the valuable minerals Milling grinds the ore into particles te size or silt or fine sand Flotation process that separates sulfide mineral grains from a slurry by attaching them to specific types of bubbles Tailings leftover material from mineral processing that is discarded Leaching mineral processing technique that removes metals from an ore by dissolving them in a percolating solution Metallurgy set of processes that separate metals from their host minerals smelting metallurgical technique that separates metal from minerals by heating them to their melting point slag glassy waste material left over from smelting 123 Environmental Concerns physical disturbances reclamation the reworking of disturbed land surface water quality spills erosion Bioavailable the relationship between the amount of a substance an organism is exposed to and the organism absorbs the more of the substance retained by an organism the more bioavailable the substance is Discharge of acid rock drainage 0 Acid Rock Drainage ARD acidic water produced by the oxidation of pyrite and other sulfide minerals 0 Groundwater quality 0 Soil quality 0 Air quality 0 Dust 0 Smelter emissions 124 Mineral Resources in the Future 0 Recycling 0 Dissipative a use of a substance that leaves it dispersed and unrecoverable 0 Sustainably mineral resource use