308 
INDEX TO KOCKS. 
Page. 
Quartz-diaspore rock 169 
Quartz-diorite 94, 121, 190, 192, 200 
Quartz-diorite-gneiss 200 
Quartz-diorite-porphyry 94, 192 
Quartz-gabbro 55 
Quartz - hornblende - mica-porphy- 
rite 157 
Quartzite 78,79,80 
Qnartz-keratophyre 77 
Quartz-mica-diorite. . . 88, 89, 94, 192, 209 
Quartz-mica-diorite-porphyry 94 
Quartz-ruonzonite 118, 
137, 139, 163, 192, 200 
Quartz-norite-gneiss 83 
Quartz-pantellarite 60 
Quartz-porphyrite 157, 160, 1 94, 200 
Quartz-porphyrite-schist . 200 
Quartz-porphyry 23, 
40, 52, 72, 119, 124, 129, 166, 226 
Quartz-pyroxene-diorite ..' 204 
Quartz-pyroxene-mica-diorite 87 
Quartz-schist 50 
Quartz-syenite 95, 135 
Quartz-syenite-porphyry 126, 135 
Quartz-tourmaline-porphyry 129 
Quartz-trachyte 19 
Ehyolite 20,52, 
53, 104, 105, 106, 108, 119, 129, 130, 
138, 149, 150, 152, 156, 159,161, 164, 
166, 168, 174, 178, 187, 188, 219, 221 
Sandstone 17, 
19, 57, 244, 245, 246, 247, 248, 249 
Saussurite-gabbro 70 
Saxonite 221 
Schist. 50, 53, 64, 65, 66, 70, 71, 72, 
83, 84, 200, 210, 211, 213, 217, 230 
Sericite-schist 50, 65 
Serpentine - 28, 
29, 33, 189, 195, 212, 215, 216, 224 
Shale 17, 57, 283, 284, 286, 287, 288 
Shell rock 256,277 
Shonkinite 128, 136 
Shoshonite 100,103 
Page. 
Siliceous sinter 251 
Slate. . . 79, 278, 279, 280, 281, 282, 284, 285 
Sodalite 22,134 
Sodalite-syenite 133 
Solvsbergite 123 
Spherulites 152 
Spilosite 69 
Syenite 21,24, 
25, 39, 95, 121, 123, 125, 126, 130, 
132, 133, 134, 140, 144, 151, 161, 204 
Syenite-diorite-porphyry . 126 
Syenite-porphyry 24, 95, 125, 204 
Tachylite 85 
Talcose schist 72 
Tallow clay 296,298 
Teschenite 19 
Theralite 123,124 
Tinguaite .-... 123,136,165 
Tonalite 30,229 
Tonalite-aplite 229 
Tordrillite 229 
Tourmaline-biotite-schist 84 
Trachy-andesitic breccia 131 
Trachyte 19, 
98, 106, 123, 131, 145, 147, 172 
Trachyte-andesite 98 
Trachytic phonolite 144 
Trachytic rhyolite 105, 106 
Travertine 268 
Uralite-diabase 195 
Uralite-diorite 191 
Vitrophyre 161,221 
Vogesite 130 
Volcanic ash 219 
Volcanic glass 1 15, 152, 168 
Volcanic sand 115, 184 
Volcanic tuff 20 
Websterite 43,53,213 
Wehrlite 33,67,114 
Wollastonite-gneiss 202 
Wyomingite 85 
Yogoite 135 
o 
