216 
INDEX. 
Page 
Lone Mountain foothills, topography of 51 
Lone Mountain limestone, occurrence and 
character of ■ 20, L02 ; 165, L78 
Longst reet s Ranch Spring, How of 100 
Losi Wagons, rocks near 207 
M. 
McDonald Spring, rocks near 176 
eologic, of altered Tertiary rocks.. .. 43 
of southwestern Nevada and eastern 
California 26 
accuracy of 13 
Map, index, showing ana described 14 
Map. topographic, description of 14 
Marble Canyon, description of 201 202 
view of 200 
Ma rglnifera sp., occurrence of 122 
Mesquite Flal location of 190 
Mesquite Spring, wain- of 197 
Metamorphic rocks, occurrence and charac- 
■ ..f 132 
□ Camp, rocks near 167, 176 
chists occurrence and character of .. . 132 
Mining, development of 42 
i Desert, rocks of 33 
Monitor Hills, geology of 3,34,97 98 
structure of 
Monte Cristo Springs, rocks near '. 142 
water of 141 
Montezuma district, ore deposits of .. 15, 16,63 64 
tuna Peak, rocks of 55 58,61 65 
Monzonite, definition of 17 38 
limestone near, view of 200 
ence and description of 32, 
123,133,205 207 
inite porphyry, definition of 38 
occurrence and character of 58-60, 
85,103-104,1 H 1 15,184,193,205,208 
ts in i 
Mud Spring, flow of 176 
X. 
New Reveille, location of 117 
ore deposits and rocks at ] 15, 117" 
0. 
Oak .Spring, (low of 119,130 
ore deposits a1 44,45,128-130 
rocks near 122, 1 23 , 1 25, 1 28 
"U at 122 
')ak Spring Butte, rocks of 118,127 
section through, figure showing 127 
Oasis Valley, rocks in 36 
Briens Camp. See Wellington. 
Old Camp, ore deposits at 44,188-189 
Olenellus gilberti, occurrence of 66 
Ordovician rocks, deposition of 38-39 
occurrence and character of 28-29 
Ore deposits, character of 44-49 
Oriental Wash, ore deposits at Ar>, 190-191 
Orthoceras olorus 105 
perroti 165 
Orthoclase, description of 37 
Ouida claim, ore deposits of 189 
P. 
Pahute Lake, deposition in 41 
Pahute Mesa, economic geology of 137-140 
Page. 
Pahute Mesa, geology of 30,32, 123, 131-li 
ranges north of, descripth e geology of.. 89-131 
ranges southeast of, descriptive geol- 
ogy of 142-151 
-ti ucture of..: 137 
topography of I3j 
view of 3C 
Pala odictyon, occurrence of 121 
Paleozoic sediments ore deposits in 44-4C 
Panaminl Range, economic geology of — 211-212 
geologic history of 200 
geology Of 27,29-33,120,202 210 
structure of 210 
topography of 201 202 
Pegmatite, definition of 38 
dikes of, ore in 44 
occurrence and character of \'<\, 
155-156,178- 179 
Pennsylvanian limestone, fossils from 122 
occurrence and character of 1 15, 
118,121 122,1 13,203 204 
Phillipsia sp. ; occurrence of 122 
Pillar Spring, water of 131 
Plagioclase, description of 37 
l'laya deposits, occurrence and character of. 30 
Pleistocene rocks, occurrence and character 
of 35 36 
Pogonip limestone, occurrence and charac- 
ter of 2N 29,89 90, 
100 102,118-120,155,164 165,202 201 
structure of 121 
view of 201 
I'oint of Rocks, rocks near 148, 141 
Poison Spring, rocks near 163, 167, 175 
Preble Mountain rocks near 70 
Pn cipitation, records of 17 
Productus corn, occurrence of 122 
nevadensis, occurrence of 122 
semireticulatus, occurrence of 122 
sp., occurrence of 122 
Prosped Mountain limestone, occurrence 
and description of 28,148 149 
Prospect Mountain quartzite, correlation of 28 
occurrence and description of 25 26J 
38,148,102-104,202 
Prospecting, aids to 49-50 
Q. 
Quartz Mountain, economic geology of 142 
geology of 137,111 
structure of 1 42 
topography of 141 
Quartz Mountain Cam]), rocks at 142 
Quartz veins, ore deposits in 44-45,66,81, 1! 8j 
ore deposits in, figure showing 138 
Quartzite, occurrence of 132 
Quartzite Mountain, elevation of 99 
rocks on 100-102,113 
section of 108 
R. 
Railroads, access by 28 
Ralston Valley, description of 83 
Ramsay well, description of 77 
Randsburg district, rocks of 33 
Ransome, F. L., on Happy Hooligan mine . 170 
work of 13,15,71,181 
