766 



INDEX. 



Page. 

 Mosquito fault, ahea between, and Bali, mount- 

 ain FAULT 215 



AREA EAST OF 209 



map explained 90 



Pass 137 



road 139 



Peak 139,142 



Porphyry 63, 96, 113, 125, 327 



Kange 27 



age of uplift of 31 



amount of displacement in 39 



dynamic movements in 32, 35 



geological history of 30 



topographical description of 27 



■ volcanic rocks in 39 



section of Paleozoic formations 57 



Mottled porphyry, why so named 383 



Mountain elevation, theory of 24 



STRUCTURE 24 



Mountains and peaks : 



Arkansas 2U0 



Baldhead 135 



Ball 2 1 9, 221, 223 



Bartlett 198,199,201 



Bross 115 



Buckeye 'peak) 193 



Buckskin 124,125 



Buffalo (peaks) 28,175,302 



Cameron 115 



Chalk 194,302 



Democrat 124 



Dyer ■. 150,212 



East Ball 215 



Evans 139,214 



Gemini (peaks) 149 



Green 222,507 



Lamb 163 



Lincoln 107,110 



Little Bartlett 198 



Little Zion 186 



Mosquito (peak) 139, 142 



Xorth(peak) 98 



Peerless 159,182 



Prospect 184,257 



Ptarmigan (peak) 182 



Quandary 98 



Sheep 168 



Sheridan 182 



Sherman 159,210 



Sil verheels 105 



South (peak) 174 



Spanish (peaks) 306 



WestDyer 214 



Sheridan 212 



Weston's (peak) 172 



Zion 186 



MOUNT Zion poi!Piiyby 76, 185, 323, 326 



analysis of 326, 358, 589 



Mourne Mountains, Ireland, granite in 309 



Muffles, used in assaying 633 



Murray, John, cited 54 



Muscovite, alteration product of biotite 324,325,357 



feldspar in sand- 

 atones 68 



! Nevadite 87, 195, 201, 295, 300, 303, 345, 5S9 



j analysis of 349,358,589 



definition of 345 



i figured 68 



metallic contents of 581 



sanidino from, figured 348 



topaz in 87,347 



Newberry, Prof. J. S., cited 54, 372, 56S 



K'Ew Discovery mine 462 



New metal 714 



Nickel in Leadville ores 547,720,724 



separation from cobalt 721,723 



Nigrine in amphiholite 50 



Niles- Augusta mine 443 



Non-absorption op sedimentary rocks by erup- 

 tive masses 308 



No Name gulch 189 



Non-conformity by erosion in Paleozoic 61, 188 



North Iron Hill '. 248,401 



Mosquito amphitheater 1 25 



section 131 



Peak ridge 98 



Notes upon methods of .analyses 589 



THE Henry Mountain rocks .359 



O. 



Ohio and Missouri smelter 025, 626, 693, 694, 695, 698, 708, 



711, 712 



Older eruptives 323 



Ore beds 048 



BUYING fi27 



currents, direction of 571, 57:t 



Deposition, previous to faulting 399 



on Iron fault, secondary 400 



deposits. 367 



genesis of Leadville 539 



manner of occurrence of 540 



mode of formation of 565 



on CarbonateHill 411 



Fryer Hill 451, 490 



North Iron Hill 404 



replacement of limestone 406, 407 



scientific study of 308 



prospects IN UNE.KPLOKED .IREAS 518 



Ores and vein materials, composition of 543,599 



annual consumption of, by smelters 637 



deposited as sulphides 562 



of chief mines described 616 



Origin of metals in Leadville deposits 379, 569 



SERPENTINE 282 



structure in eruptive rocks 320 



Orthoclase in porphy rite 336, 339 



Orthoclaatic and plagioelastic rocks 304 



Other groups of mines 493 



Outcrop deposits richer than those in depth 554 



Output of Leadville mines, tabulated 015 



P. 



Paleozoic formations 53,277 



ore in 541 



sections of 57, 133, 166, 213, 381 



P-irk city 131 



province 291 



