International aspects of mineral resources, 2, 383-404

International Coal Commission, 387, 393, 402

International trade, in common rocks, 80
in minerals, 383-388
participation of governments, 388-390

Intrusive rocks, formation of, 19

Iowa, flint linings, 269
grinding pebbles, 268
gypsum, 284
zinc, 216

Ireland, bauxite, 242

Iron and coal, situation of western Europe under terms of Peace
Treaty, 400-403

Iron and steel, metallurgical processes, 158-159

Iron and steel industry, possible establishment on west coast of
United States, 155, 165

Iron cap, of sulphide deposits, 47, 109, 313

Iron ores, anti-conservational effect of war, 365
attempt to estimate reserves of continents, 322
exploration of in Lake Superior region, 323-326
general geologic and economic features, 8-9, 28, 34, 36, 47, 50,
52-53, 55-56, 58, 96, 153-156, 158-173, 397
litigation concerning Cuban, 349
metallogenic provinces and epochs, 308-309
outcrops, 312-313
taxation of in Lake Superior region, 335
use of magnetic surveys, 317-318
world reserves, 162-165, 360-361

Itabirite, 167

Italy, asbestos, 271, 272
asphalt and bitumen, 152
barite, 272
bauxite, 242
borax, 275
cement, 87
graphite, 280
manganese, 176
marble, 83
mercury, 256-257
natural gas, 151
petroleum, 128
pumice, 268
salt, 294
sulphur, 109-110
talc, 299
zinc, 214-215

Italy, coal situation under Peace Treaty, 401
commercial and political control of various minerals, 64
relative position in regard to supplies of minerals, 399

Japan, arsenic, 250
cement, 87
chromite, 178-179
coal, 115, 117
copper, 197-198
gold, 222
graphite, 280
iron, 154, 160
manganese, 174
natural gas, 151
petroleum, 128
silver, 232
sulphur, 109-110
tungsten, 183, 185
zinc, 214

Japan, control of various minerals in other countries, 64, 105, 154, 247

Jasper, 167

Java, manganese, 176

Jerome, Arizona, copper ores, 41, 47, 198, 204-205, 314

Joachimsthal, Bohemia, uranium and radium ores, 265

Joint Mineral Information Board, 406

Joplin district, Missouri, cadmium, 254
lead and zinc ores, 54-55, 209, 211, 214, 215, 216-219

Juneau, Alaska, gold ores, 229

Kansas, gypsite, 284
natural gas, 151