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<br /> <br />o <br />() <br />('~) <br />-..1 <br />-..1 <br />"'-l <br /> <br />Part I <br /> <br />Part II <br /> <br />Part III <br /> <br />Part IV <br /> <br />CONTENTS <br /> <br />Introduction <br />Purpose and scope <br />Relationship to other appendices <br />Mineral industry of region <br />Historical highlights <br />Mineral production, value, and related <br />bacl<ground data <br />The min~ral resource base <br />Markets' <br />Geology , " <br />Middle Rocky Mountains Province <br />Physiography <br />Geology . <br />Southern Rocky Mountains Province <br />Physiography <br />Geology , <br />Wyoming Basin <br />Physiography <br />Geology , <br />Colorado Plateaus Province', '. <br />Physiography <br />Geology . . . <br />Economic Geology <br />Mineral resources , <br />Mineral fuels <br />Crude oil, natural gas, and associated <br />helium and sulfur , <br />Uranium and associated vanadium <br />Thorium . <br />Coal <br />Gilsonite <br />Oil shale <br />Rock asphalt <br />Metallic minerals <br />Associated base and precious metals <br />Iron <br />Molybdenum and tungsten <br />Placer gold . <br />Nonmetallic minerals <br />Dawsonite <br />Halite <br />Gypsum <br />Nahcolite <br />Phosphate <br />Potash <br />Pyrite <br />Trona , <br />Miscellaneous <br /> <br />Page <br />1 <br />1 <br />3 <br />4 <br />4 <br /> <br />8 <br />14 <br />15 <br />17 <br />17 <br />17 <br />17 <br />19 <br />19 <br />19 <br />20 <br />20 <br />20 <br />20 <br />20 <br />20 <br />21 <br />24 <br />24 <br /> <br />24 <br />26 <br />28 <br />28 <br />28 <br />32 <br />35 <br />35 <br />35 <br />36 <br />36 <br />37 <br />37 <br />37 <br />39 <br />39 <br />39 <br />39 <br />40 <br />41 <br />41 <br />41 <br /> <br />h <br />" <br /> <br />Ii <br />~: <br /> <br />I <br /> <br />~ <br />" <br />t <br /> <br />11 <br /> <br />(1 <br />~. <br />* <br />, <br />LI <br />