INDEX TO ROCKS. 
307 
Page. 
Lava soil 304 
Lepidomelane 21 
Leucite-absarokite 97, 99 
Leucite-banakite 102 
Leucite-basalt 132 
Leucite-monchiquite 132 
Leucite-shoshonite 100 
Leucite-syenite 133 
Leucitite 136 
Lherzolite 42 
Limburgite 38 
Limestone 17, 252, 
253, 254, 255, 257, 258, 259, 260, 
261, 262, 263, 264, 268, 269, 270, 
271, 272, 273, 274, 275, 276, 277 
Litchfieldite 21 
Lithoidite 104 
Loess 295, 296, 298, 299, 301, 302 
Madupite 85 
Magnetite 75,83 
Marble 252,255,258,275 
Marl 263 
Melaphyr 202 
Metaandesite 191,203 
Metabasalt 68 
Metadacite 203 
Metadolerite 68 
Meta-quartz-diorite 55 
Metarhyolite 187 
Meteorites 231-244 
Mica 21, 50, 85, 202, 208, 218 
Mica-andesite 170 
Mica-basalt 173 
Mica-dacite 107,149 
Mica-diorite 67,72 
Mica-gabbro 92 
Mica-peridotite 58 
Mica-schist. 66,83,210 
Microcline 49 
Micropegmatite 207 
Microperthite-hornfels 26 
Minette 39,128 
Missourite 133 
Monchiquite 60, 122, 128, 130 
Monzonite 93, 118, 128, 133, 
135, 137, 139, 162, 163, 166, 192, 200 
Nepheline 21,23 
Nepheline-basalt 62, 63, 144 
Nepheline-basanite 171 
Nepheline-rnelilite-basalt 63 
Nepheline-syenite 21, 33, 39, 123, 144 
Nevadite 156 
Norite 36, 37, 45, 67, 83 
Tage. 
Novaculite 65 
Obsidian 104, 119, 1 72, 212, 217, 219 
Olivine 56,81,221 
Olivine-basalt 35, 189, 218 
Oli vine-diabase 76, 225 
Olivine-gabbro 44, 81, 122, 206 
Oolitic sand 275 
Orendite 86 
Orthoclase 23,155,156 
Orthoclase-gabbro-diorite 93 
Ottrelite... 50 
Ottrelite-phyllite 50 
Ouachitite 60 
Pantellarite 60 
Pegmatite 207 
Peridotite. 30, 
38, 54, 56, 58, 64, 114, 147, 191, 221 
Perlite 108,175 
Phlogopite , 85 
Phonolite 33, 62, 84, 143, 144, 171 
Phonolitic andesite 1 70 
Phthanite 288 
Phyllite - 26 
Picrite 67,114,124 
Picrite-porphyry 67 
Pitchstone 35, 119, 129, 150, 168 
Plagioclase 49 
Plagioclase-basalt 61, 145, 171 
Plagioclase-gneiss 201 
Porphyrite 112, 120, 121, 155, 157, 
160, 164, 167, 173, 179, 199, 200, 217 
Porphyrite-diorite 160 
Porphyry 23. 24, 25, 40, 52, 59, 
67, 72, 77, 89, 92, 93, 94, 95, 96, 97, 
106, 107, 112, 119, 124, 125,126, 129, 
130, 134, 135, 141, 154,155, 158, 166, 
167, 177, 192, 200, 204, 207, 226, 228 
Pseudo-diabase 211 
Pseudo-diorite 211 
Pseudo-leucite-sodalite-tinguaite . . 136 
Pseudo-leucite-syenite 133 
Pumice 219 
Pyroxene 111,165,220 
Pyroxene-andesite 108, 
109, 145, 171, 181 
Pyroxene-mica-diorite 87 
Pyroxene-porphyry 87 
Pyroxenite 42, 43, 53, 213 
Quartz-alunite rock 151 
Quartz-andesite 193 
Quartz-banakite 102 
Quartz-basalt 184, 185 
Quartz-biotite-hornblende-diorite . 45 
