C Calamine, 68 Calaverite, 30 Calcite, 144 Calcium, 143 Carbon, 156 Carbonite, 222 Carbuncle, 124 Carnelian, 106 Carnotite, 90 Cassiterite, 93 Cat’s eye, 104 Celestite, 153 Cerargyrite, 37 Cerrusite, 61 Ceylonite, 97 Chalcedony, 104, 106 Chalcocite, 42 Chalcopyrite, 40 Chalcotrichite, 45 Chalk, 213 Chert, 107 Chlorite, 140 Chlorospinel, 98 Chromite, 87 Chromium, 86 Chrysocola, 47 Chrysolite, 134, 140 Chrysoprase, 106 Cinnabar, 91 Cinnamon stone, 123 Citrine, 103 Clay, 207 Clay, ball, 208 Clay, brick, 209 Clay, china, 208 Clay, fire, 208 Clay, paving brick, 209 Clay, sewer-pipe, 209 Clay, slip, 209 Clay, stoneware, 209 Clay stones, 250 Cleavage, 21 Cleavage, slaty, 234 Coal, 217 Coal, bituminous, 212, 220 Coal, cannel, 221 Coal, hard, 222 Coal, soft, 220 Cobalt, 84 Cobalt bloom, 85 Cobalt glance, 85 Cobalt gray ore, 85 Cobaltite, 83 Coke, 220 Colemanite, 165 Collecting, 5, 7 Color, 23 Concretions, 248 Concretions, flint, 253 Concretions, lime, 251 Concretions, other, 255 Concretions, sandstone, 253 Conglomerate, 202 Copper, 37, 39 Copper, blushing, 42 Copper, glance, 42 Copper, grey, 43 Copper, peacock, 42 Copper, plush, 45 Copper, purple, 41 Copper, red, 44 Copper, variegated, 42 Copper, yellow, 40 Coquina, 213 Coral, 146 Coral rock, 214 Corundum, 75 Crude oil, 227 Cryolite, 78 Crystal balls, 101 Crystal formation, 14 Crystal rock, 103 Crystal structure, 11 Crystal systems, 13-18 Cuprite, 44 Cyanite, 128 D Dacite, 187 Dense, 176 Diamond, 157 Diamonds, Matura, 127 Diamonds, slave’s, 133 Diatoms, 231 Dikes, 174 Diorite, 182 Dog-tooth spar, 145 Dolomite, 99 Dry bone, 68 E Earth, diatomaceous, 23 Elements, listed, 267 Emerald, 125 Emerald, Oriental, 75 Emery, 76 Enstatite, 117 Epidote, 134 Equipment, 7 Erubescite, 42 Extrusive, 173 F Feldspar, 110 Feldspar, alkalic, 111 Felsite, 186 Felsitic, 176 Ferromanganese, 70 Flagstone, 207 Flint, 106 Fluorine, 162 Fluorite, 162 Fossils, 266 Fragmental, 176 Franklinite, 69 Freestone, 207 G Gabbro, 183 Galena, 60 Garnet group, 121 Garnet, Sirian, 123 Geodes, 255 German silver, 82 Gilsonite, 229 Glassy, 176 Glucinum, 125 Gneiss, 237 Goethite, 51, 52 Gold, 31 Gold foil, 64 Gold group, 29 Gossan, 50 Granite, 178 Granite, graphic, 179 Granitoid, 176 Graphite, 156, 219 Gravel, 201 Graywacke, 206 Grit, 206 Grossularite, 122, 123 Guano, 230 Gumbo, 210 Gypsum, 150