768 



INDEX. 



Quartzville, town of 122,521 



Quaternary '71 



R. 



554 



Raimondi, cited 



Kammelsberg, cited 



Rates paid for ore at Leadville 



Katb, G. vom, cited 



Raw materials entering into smeltii 



Raymond, R. W., cited 372 



Raymond, Sherman & McKay's smelter 625,626,693,708 



Reactions is the blast-fuknaces 731 



of iron compounds 736 



lead compounds 732 



silver compounds 735 



Ready Cash mike .- 508 



RECEXT F0RJIATI0N6 72 



Red amphitheater 119 



Red-cast beds 134,169 



specimen from, figured 60 



Eelatiox of form to compositiox. intrusive bodies . 297 



Relative age of Arcbean rocks 51 



eruptive rocks 319 



RICHXESS OF GALENA AND CERUSSITE 553 



Replacement, evidence of . . 394, 407, 414, 419, 420, 424, 4?5, 446, 

 480, 548, 566, 568 



Rbodocrosite 527 



Rhyolite 87,181,345 



cobalt in 591 



from Black Hill 170, 171, 349 



Cbalk Mountain 345 



Empire gulch 351 



McKulty gulcb 350 



silver in 579,594 



zinc in 591 



Rhyolitic breccia from Eureka shaft 236, 352 



tufa from South Park 170,352 



Richtbofen, W. B. v x 



Ricketts, L. D., cited 436, 437, 438, 443, 549, 553, 604, 605 



Roasted chamber dust 715 



Roasting furnace, at Smelter A 671 



Robert E. Lee minf, 483 



Robinson, Geo. H x 



Limestone 69, 198, 279, 598, 646 



Rock constituents of eruptive rocks 356 



formations 45 



on Carbonate Hill 409 



Fryer Hill 447 



IronHiU 381 



North Iron Hill 402 



MINE 389 



Rocky Mountains in Colorado 19 



uplift, shoreline 211 



Rod well , cited 734 



Root's positive-blast blower 663 



Rosenbusch, H., quoted 46,320 



Roth, J., cited 283, 551, 563, 564 



Rougb-and-Tumbling Creek 175 



Round Hill 169 



Running with dark top 666 



Russia mine 521 



Rutile 49, 50, 324, 325, 327, 328, 330, 332, 342, 357 



Sacramento amphitheater - 

 Arch 



Page. 



Sacrame.nio mine 530 



poephyrite 341 



Porphyry 81,150 



silverin 579,594 



Sahlite in gneiss 49 



Sale of bullion 692 



Sampling of ores 628 



bullion at Smelter C 678 



WORKS 629 



Sandberger, F., cited 561,670.575,576 



Sandy limestones, term defined 59 



Sangre de Cristo Range. Arcbean areas in 24 



Sanidine from Nevadite, figured 348 



satin-like luster of 348 



San Juan region, Arcbean areas in 24 



secondary eruptives in 306 



SawatcTi Range, A rchean land mass 23 



Scoriae, defined 701 



Secondary eruptives 74 



folds 122,130 



Section of Cambrian 119,132 



Paleozoic . . -57, 58, 120, 128, 133, 155, 166, 187, 213, 381 



AVeber giits 101,123 



on Iron fault 400 



Sections of Leadville map explained 263 



Selenium in Leadville ores 547, 714 



Sfenarmcnt, cited 569 



Serlo,Prof, A . cited 370 



Serpentine 60, 120, 121, 234, 281 



analyses of 598 



Shaft accretions 726 



Sheep Creek 171 



Mountain - 168 



Ridge, structure of 162 



Ridge ICO 



Sheridan fault 179,181,182,211 



Mount 182 



Sherman fault - ■ 158 



Mount 139,210 



Shipment OF BULLION. Table VI 1 693 



Sierra Abajo, laccolites iu 306 



Carriso, laccolites in 306 



El Late, laccolites iu 306 



La Sal, laccolites in 306 



Silica and alkali determinations 590 



Silurian CO 



SIL^'ER AND gold DETERMINATIONS 579 



in eruptive rocks 579, 594 



as chloride in Leadville ores 548 



ASSAYS 634 



Coed mine 392 



method of determination of, in eruptive 

 rocks 595 



SiLVERHEELS MASSIVE 104 



Mount 105 



porfuyrite 342 



Porphyry 83. 105 



Sipbon-tap, described 660 



Skimmings of bullion analyzed 696 



Slag 098 



analyses of -^ 701,704 



assays of 098 



defined 701,703 



in smelting charges, composition of 739 



MOLDS 633 



