768 



INDEX. 



Page. 



Quartzville, town of 122,521 



QUATERNARY 71 



R. 



Raimondi, cited 554 



Rammelsberg, cited 50 



Rates paid for ore at Leadville 628 



Rath, G. vom, cited 321 



RAW MATERIALS entering into smelting charges 738 



Raymond, R. 'W., cited 372 



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



REACTIONS IN THE BLAST-FURNACES 731 



of iron compounds 735 



lead compounds 732 



silver compounds 735 



READY CASH MISE 50g 



RECENT FORMATIONS 



RED AMPHITHEATER 1)9 



Red-cast beds 134,169 



specimen from, figured 60 



RELATION OF FORM TO COMPOSITION, intrusive bodies . 297 



RELATIVEAGE of Archean rocks 51 



eruptive rocks 319 



BICHNE8S OF GALENA ASD CEBUSSITE 553 



Replacement, evidence of . . 394, 407, 414, 419, 420, 424, 435, 446, 



. . . 480,548,566,568 



Rhodocrosite 5 ^- 



RHYOLITE ......"."~."7,ll,i 



cobalt in 591 



from Black Hill 170,171,349 



Chalk Mountain 345 



Empiroculch 351 



McJJulty gulch 350 



"Iverin 579,594 



zinc in 591 



Rhyolitic breccia from Eureka shaft 236, 352 



tufa from South Park 179 352 



Richtbofen, W. B. v "' ' ,; 



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



ROASTED CHAMBER DUST 7 16 ' 



ROASTING FURNACS, at Smelter A 671 i 



ROBERT E. LEE MINE 



Robinson, Geo. H 



Limestone 69,198,279,598,646 ! 



Rock constituents of eruptive rocks 355 



FORMATIONS 



on Carbonate Hill 



Fryer Hill 



Iron Hill 



North Iron Hill . 



MIXE 



ROCKY MOUNTAINS IN COLORADO "19 



uplift, shore-line... 211 



Rod well, cited 



ROOT'S POSITIVE-BLAST BLOWER 583 



Rosenbusch, H., quoted 



Roth, J., cited .'.'.'"^Ss'wi 563 564 



Rough-and-Tumbling Creek 



Round Hill 169 



RUNNING WITH DABK-TOP 6e6 



RUSSIA MINE 



Entile , 50, 324. 325, 327, 328, 330, 332, 342, 357 



45 

 409 

 447 

 331 



402 



Page. 



SACBAMENTO MINK ^ 



POBPHYBITE 34I 



PORPHYRY '".'.'.'.'.'.'.'.'. 81,150 



silverln 579,594 



49 



Sahlite in gneiss 

 SALE OF BULLION 

 SAMPLING of ores 



628 



701 

 74 



168 

 153 



SACRAMENTO AMPHITHEATER 

 ARCH .. 



147 



bullion at SmelterC ............. 6 78 



WORKS ......................... '.'."'.'.".' <ug 



Sandberger, F., cited ........................ 561,570,575,576 



Sandy limestones, term defined ................... 59 



Sangre de Cristo Range, Archean areas in ......... 



Sanidine from Nevadite, figured ................... 343 



satin-like luster of .......... ............. 343 



San Juan region, Archean areas in .................. 04 



secondary eruptives in ............ 30$ 



Sawatch Range, A rchean land mass ............. 



Scoria, defined .............................. 



SECONDARY ERUPTIVES ............. 



folds .................................... 122 130 



Section of Cambrian ........................... 118132 



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

 Weber grits ............................. mm 



on Iron fault ............................... 1W> 



Sections of Leadville map explained 



Selenium in Leadville ores ....................... 547714 



Senarmcnt, cited ..... ..................... 'j^ 



Serlo, Prof. A. cited ....................... 



Serpentine ............................... 60,120,121,234,281 



analyses of ............................ 5 9g 



SHAFT ACCRETIOJCH .............................. 72 6 



Sheep Creek ................................... 171 



MOUNTAIN .............................. 



Ridge, structure of 

 RIDGE 

 Sheridan fault ............................... 179,181,182,211 



Monnt .................................. 1S2 



Sherman fault ............................ 



Mount ................................... 159,210 



SHIPMENT OF BULLION. Table VII .................. 693 



Sierra Abajo, laccolites in ..................... 30 |j 



Carriso, laccolites iu ...................... 300 



El Late, laccoliles in ......................... 30a 



La Sal, laccolites in . ...................... yoo 



SILICA AND ALKALI DETERMINATIONS 

 SILURIAN ...................................... 



SILVER AND GOLD DETERMINATIONS .................. 579 



in eruptive rocks ................. 579, 594 



M chloride in Leadville ore ................ 543 



A88AY9 ...................................... 634 



CORD MINE .................................. 39 o 



method of determination of, In eruptive 

 rock9 .................................... 595 



SlLVKRHEELS MASSIVE 



Mount ............................. 



POHPHYBITE 



PORPHYBY i 



Siphon-tap, described ........................... 660 



Skimmings of bullion analvzed .............. 696 



SLAO ...................................... .".'.'..".".".'.".' 698 



analyses of .................................... 701,704 



assays of ............................ .......... 698 



defined ........................................ 701,703 



in smelting charges, composition of ............ 739 



"OLDS ..... ,, 



5Qfl 



](, 4 



105 



342 



