Economic Geology: With Special Reference to the United States

22d Ann Amer analyses anthracite Appalachian Arkansas asbestos asphalt barite belt bituminous Bull California carbon Carboniferous Carolina cement cent chalcopyrite coal beds color Colorado contain copper corundum County Creek Cretaceous crystalline deposits dikes Distribution district dolomite Econ Engrs fault feet feldspar field fissures formation Geologic gneiss gold granite gypsum igneous rocks important Inst iron Jour Kansas Lake lignite lime limestone limonite localities LONG TONS magnetite manganese manufacture masses metals metamorphic Mexico mica miles minerals mining Missouri Mountain Nevada occur Ohio origin outcrop oxide peat Pennsylvania petroleum phosphate porphyry production pyrite Quantity Value Quantity quarried quartz quartzite region Rept residual clay salt sand sandstone schists sedimentary shale SHORT TONS showing silicates silver SiO2 slate South stone sulphate sulphides sulphur surface Surv Tertiary Texas thickness Trans U. S. Geol United Utah VALUE QUANTITY VALUE vary veins Virginia West Wyoming York zinc zone