Chapter X

COPPER, LEAD, THALLIUM, BISMUTH, ANTIMONY.

COPPER--Introductory 175
Dry assay 176
Valuation of copper ores 181
Wet methods 183
(1) Electrolytic assay 184
Volumetric methods 194
(1) Cyanide method 194
(2) Iodide method 199
(3) Colorimetric method 203
Examination of commercial copper 205
LEAD 211
Dry assay 211
Wet assay 213
(1) Gravimetric method 213
(2) Volumetric method 214
(3) Colorimetric method 218
THALLIUM 219
BISMUTH 220
Dry assay 221
Wet method 221
(1) Gravimetric determination 222
(2) Colorimetric assay 223
ANTIMONY 225
Dry assay 225
Wet method 227
(1) Gravimetric assay 228
(2) Volumetric method 229

CHAPTER XI.

IRON, NICKEL, COBALT, ZINC, CADMIUM.

IRON 231
Gravimetric determination 233
Permanganate and bichromate methods 234
Stannous chloride method 244
Colorimetric determination 247
NICKEL 251
Dry assay 251
Electrolytic assay 254
Titration by cyanide 255
COBALT 259
ZINC 261
Gravimetric method 262
Volumetric method 263
Gasometric method 266
CADMIUM 269

CHAPTER XII.

TIN, TUNGSTEN, TITANIUM.

TIN 271
Vanning 273
Dry assay 276
Detection, &c. 279
Gravimetric determination 281
Volumetric determination 282
Examples 284
TITANIUM 292
TUNGSTEN 295
NIOBIC AND TANTALIC OXIDES 297

CHAPTER XIII.

MANGANESE, CHROMIUM, ETC.

MANGANESE 298
Gravimetric determination 300
Volumetric determination 300
Ferrous sulphate assay 301
Iodine assay 302
Colorimetric determination 306
CHROMIUM 307
VANADIUM 310
MOLYBDENUM 311
URANIUM 312