Where are the big reserves of oil shale in the United States? (See Fig. 7.5.)
Answer to relevant QuestionsWhat are tar sands, and where are the earth’s largest known deposits? (See Fig. 7.6.)Where are iron deposits found?Why do quartz and calcite veins sometimes contain ore minerals such as native gold?What minerals, other than native gold, are found as placer deposits?Calculate the amount of iron (weight percent) to the nearest whole percent in each of the following iron minerals: Magnetite (Fe3O4), hematite (Fe2O3), goethite [FeO(OH)], and siderite (FeCO3).
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