Lecture+11-14-08+Minerals+and+Mining

Lecture+11-14-08+Minerals+and+Mining - Reserves – can be...

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Minerals and Mining Ore deposits – anomalously high concentrations of minerals (or other earth materials) Geologic origins: Plate tectonics, metamorphism, igneous intrusions, hydrothermal solutions Concentration by sedimentary processes: - concentration by streams = placer deposits (eg, gold nuggets) - evaporites Biological processes: fossil fuels - coal, oil
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Mineral Resources: compounds, minerals, rocks with economic use and value
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Unformatted text preview: Reserves – can be economically mined (Marginal reserves – minable if price is high enough) Not all resources are reserves! But as resource becomes more scarce, price goes up, marginal reserves become economically minable Resource exploitation curves Dealing with scarcity: Find more Reduce consumption Recycle/reuse Find substitute Material Use: The use of materials by broad category in the United States, 1900-2000...
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This document was uploaded on 07/22/2009.

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Lecture+11-14-08+Minerals+and+Mining - Reserves – can be...

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