northwest Introduction to ore-forming processes
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Doug
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« on: July 17, 2010, 02:19:08 PM »
Introduction to ore-forming processes
Sue Golding
Surface and subsurface environments of ore formation
• Involving magmas
– crystal-liquid fractionation (chromite ores)
– immiscible magma separation (nickel sulfide ores)
• Involving water
– hydrothermal processes (gold, base metals etc)
– surface precipitation (evaporites)
– physical concentration (placer deposits)
– weathering (laterites, supergene ores)
• Involving life
– organic activity (phosphates)
organic accumulation (oil, gas, coal)
http://www.earthsciences.uq.edu.au/Course_Information/2007/MINE2106/2106_lec02_ppt.pdf
doug  happy face
« Last Edit: August 14, 2010, 01:41:37 PM by Doug » Logged
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