CEE 1030 1nd Edition Lecture 27 Mineral Resources Outline of Last Lecture I Resources II Hydraulic fracturing fracking III Gas hydrates IV Fossil fuel combustion V Renewable energy resources Outline of Current Lecture I Mineral resources a Igneous mineral resources b Metamorphic ore deposits c Weathering and ore deposits II Placer deposits III Nonmetallic mineral resources Current Lecture I Mineral resources a Mineral resources the endowment of useful minerals ultimately available commercially according to value b Ore metallic mineral deposits that make it valuable for mining c Igneous mineral resources i Magmatic segregation local concentration of minerals formed during the cooling of magma 1 Types a Separation of heavy minerals that crystallize early b Enrichment of rare elements in the residual melt ii Diamond a form of carbon created at great depths under high pressure 1 Once crystallized diamonds are carried up through conduits within ultramafic rock called kimberlite iii Hydrothermal solutions solutions of hot metal rich fluids move through rock depositing metals as the fluid cools 1 Vein deposits solution moves along fractures cools and precipitates within cracks 2 Disseminated deposit ores precipitated as minute masses throughout entire rock mass These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute II III 3 Surface deposits where magma is near surface dissolved metals precipitate when water cools in air d Metamorphic ore deposits e Weathering and ore deposits i Secondary enrichment concentration of scattered minor amounts of metals by weathering processes 1 Two types a Chemical weathering removes undesirable elements from decomposing rock leaving desirable elements b Desirable elements found near surface are carried to lower zones and concentrated Placer deposits a Placers deposits formed when heavy minerals are mechanically concentrated by currents most commonly streams and waves i Typically heavy and durable minerals Nonmetallic mineral resources a Building materials b Industrial minerals
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