INDEX. 259 
Page. Page. 
Lithographic dolomite, character of--......--------- 15-16 | Penfield, S. L., chemical analyses by-----..-------- 224, 225 
Litigation, history of---------------- XxXI-xxv | Pioneer tunnel, features of__-..-.--- = 10) 
Little Annie mine, description of.---..-.------------ ZODn EOlybasitesanalySesOl sass ese eee ne eee eae raeeane 225 
Little Cloud tunnel, features of__-------.------------ 166 | Porphyry dikes, occurrence of---..--.--.------------ 47 
Little Lottie mine, features of -- 
Little Percy mine, features of-.-.---.------------- 168-169 
Little Rule tunnel, features of -----..---------------- Viz 
Long John shaft, features of-.--..--.----------------- 178 
M. 
Magnesia sulphate, deposits of--....--.---- tie Sees 239 
Magnesium oxide in Leadville dolomite, occur- 
MON CO Ofswacse aor ceiee sone eo oae a= see nas eeesan 
Manganese, deposits of_-.--...------------------------ 
Maroon beds, conditions of deposition of 
Maroon dolomite, character of ...._..---------------- 
Maroon formation, position and character of------- 33-37 
Marvine, A. R., cited 39 
Mary B. fault, features of -_.....--.-.---.-.---------- 69-70 
Mary B. mine, features of--......---..------------- 166-167 
Mayflower tunnel, features of- 
Metals, original source of__._..---.----...--------- 
Mineral Farm mine, description of .--.-----..-------- 
Mineralization, agents of 
ON@ LOGS) O bees eee te se eine oleae 
Minerals lis tho fepesse esse ase eseae teen ae ee 
Mines and productive localities, descriptions of-- 151-205 
Mining suits, history of...----..-.-------------- XXII-XXV 
Minnie Moore mine, features of-.-.--.------------- 
Mollie Gibson mine, description of -- 
diagram showing ore body of--..-------..-------- 
diagrams showing successive stages of faulting 
UTS eee ee esate «Getta Sete aataaeres 199 
mode of occurrence of ore in-_--.-------------- 184-185 
summary of geology of.-----.------------------- 187-188 
Montana formation, character and fossils of ----..-- 42-43, 
N. 
New York tunnel, features of -----..--..------------ 160 
Niobrara limestone, position, thickness, and char- 
EICUEDP Ose ae cam nas cone See OC EERE SSO CACO DSRS 41-42 
oO. 
OK: mine} features of-----.--- 2-22 enna ne eenn nnn 
Ontario fault, features of 5 
Ore deposition, detailed description of. -..--..---- 224-236 
OxLentio lp sees e a eaten as lo eee eee eee 231-232 
influence of different rocks on.----.-.--------- 232-233 
Woes) Os acca ssc case neeeats 0 oc aa CoS aSnSonaaabeso 
Ores, cause of precipitation of 
changesyine eae nee nea canes 
chemical composition of--..-------.---.---- 
OIG AIONN OLE eee ane mene e ene e ee eee 
Te, 
Paragenesis of vein materials, discussion of ------ 221-229 
Park-Regent mine, description of -.--.-.------.--- 194-196, 
OCCULLENCC OL OLe nis sss ae se ae ee 
Parting Quartzite series, age of - 
character and occurrence of -.-.---.------------- 
conditions of deposition of --.-..----..----------- 
section of 
13-14 
Peale, A. C., cited 7,10, 34 
Pearce, S. H., chemical analysis by 225 
CLL Cees eee te eat ee os seen eee ne we ee eee 239 
Precipitation of ores, cause of -- 
Pride fault, description of 
Pride of Aspen mine, features of _----..--.-.---.---- 165 
Princess Louise shaft, features of .......-.------.--- 160 
Q. 
Quartzite (dolomitic), age of -.....-.----------------- 8 
occurrence of 5-6 
thicknessiofjessa e222 Sess s2e eee tes ee eee eee 8 
Quartz-porphyry, character, occurrence, and source f 
OE se ae Gane nee Moe na SE HO eee Pet 48-53 
Queen’s Gulch, mines and workings in-......-...- 203-205 
R. 
Red Mountain, description of --....-----.---------.-- 
Red sandstones, character of--- 
conditions of deposition of .--.-.--.- 
Red Spruce shaft, features of 
Regent fault, features of 
Roaring Fork glacier, description of 
Roaring Fork River, course of 
Rohlfing, D., acknowledgments to XVI 
Royalties paid by mine lessees, table showing. --. XXVIII 
Ruby mine, features of_-_-_.-.------.--..------------ 168 
Ss. 
Saddle Rock fault, description of ....--..--....------ 62-63 
foatures of ---..--.---.-------- -- 93-94 
Saddle Rock shaft, features of- -- 171-172 
Sam Houston shaft, features of _. 171 
Sandberger, F.., cited_-----.----.---.- 236 
Sandstone (red), character and age of- ---- 37-38 
conditions of deposition of .__.-.-._____..-- =. 38-39 
Sandstone veins in dolomite, occurrence of--- 26-28 
San Jacinto shaft, features of ....---.-..------------- 171 
Sarah Jane fault, description of--_-...._-.-.---.--__-- 63-64 
features Ole ss Stenson eee eee 94,177 
Schillerfaultsteatures Ofses nesses eee nee 64-65 
Schiller mine, features of----------..---....--------- 157 
Schmidt, Adolph, cited 211 
Sections shown on atlas sheets, description of 79-82, 
108-117, 162-164, 125-126, 131-182, 137-143 
240, 
Selenite, formation of .*_-.--. -<-.-- -- 22 eo enee one === 
Silicification, detailed description of 
Silurian beds, character of_-_-.-..-.-------..__--.___.- 
Silver (native), formation of - 
Silver fault, features of .-_..-......... 71-72, 74, 120-122, 128 
Silver fault system, features of_.-.-.---- 88-89, 106, 144-145 
Smuggler fault, features of 
Smuggler mine, description of_---.-.--..--..-.---- 185-187 
diagram showing ore body of.--.-.-----. -------- 183 
liagram showing successive stages of faulting 
ed Tn A ae eee eater a te A eee reece ON 199 
MabUTOlohOres|OLas-s ee eee eee eee een 186-187 
OCCULTENCEIOh OLS Mens ese es nae eee 187 
summary of geology of_-..-..-.--.----.-------- 187-188 
Smuggler Mountain, description of --.__.--.-.-_..-. 74-78 
description of section across._-.---------.----.-- 79-80 
mines and workings in -.....---------..-.------ 180-197 
TEsumMé) oLse colon yaOleesesseeeee eee bene eee eee 198-199 
TESUME|OMS PLU CLULO) Oleeees eee ee sete ae ae eee 17-78 
