SUBJECT INDEX
309
FERTILISERS, 197-205, 214-7.
Fluccan, 8.
Fuel, 259, 296.
Fuller’s earth, 173-4.
precipitates, 145-6 ; bedded, 144 ;
blackband, 146; bog iron, 147 ;
classification of, 131; contact,
132; efflorescent, 147; igneous,
132; ore supplies, 130; organic,
146; oxide due to descending
solutions, 134-42 ; primary lodes,
133-4; pyritic masses, 134; re-
placement, 134-44; residual,
147; solubility, 130; surface
ores, 147, ancient, 142-4; titani-
ferous magnetites, 132.
Isoseists, 249.
[sovols, 281.
TADE, 166 ; jadeite, 167.
GARNETS, 167.
Gash-vein, 8,
Gems, the, 7, 161-7.
Geology, economic, scope of, I;
value of, 277.
Gold ores, 35-64; classification of,
37; deep leads, 53-7; depth of
lodes, 29 ; dredging, 53-4; gold-
quartz lodes, 36-51; hydraulic
mining, 53; with igneous rocks,
36; impregnations, 45, 50; in-
filtration, 46; ladder-lodes, 44,
45; lodes, 36; Morro Velho
Mine probably placer origin,
63-4; placers, 53; pneumato-
lytic, 41, 43-4; propylitic origin
of, 36-7; qualities, 35; in
Queensland, 52; Rand Banket,
57-60; Rand Goldfield, 57-63 ;
replacements, 45-8 ; saddle lodes,
9, 44; in sea-water, 35; secon-
dary enrichments, 37, 51-3; vol
canic rocks, gold ores in Rocky
Mountains and New Zealand, 42.
Goldfields, alluvial, 53-64 ; of West
Australia, 48-51.
Gouge, 8.
Gossans, 31.
Graphite, 265.
Groynes, 2406.
Guano. 201-2.
KANKAR, 30.
Kaolinite, 169,
KK imberlite. 162.
LADDER lodes, 9, 37, 44-5.
Lateral secretion, 16, 23, 91, 103.
Lapis Lazuli, 167.
Lead, price, 96; qualities, 96;
uses, 96. Ores of, 96-109; age
of, 97, 99, 100, I0I, 108; classi-
fication, 98 ; contact, 102 ; depth
of, 97; disseminated ores of
Mississippi, 105-7 ; ¢‘ flats’ and
bodies due to descending solu
tions, 106-8 ; with igneous rocks,
101-4; primary ores, 98-105;
with quartz-porphyry sheets,
102-4; replacements, 102-5;
secondary, 105-8; sedimentary,
108 ; source of, 108-9.
Lignite or brown coal, 261, 262-3.
Lithosphere, 16.
Loaming, 6.
Lode, ascensional origin of, 15;
deposition of, 26; depth of, 27;
formation of, 28 ; lode-track, 8;
structure, 7, 27-3.
HOMOSEISTS, 249.
Horse, 12.
Hydatogenesis, 26.
Hydraulic mining, 53.
Hydrothermal origin of ores, 26, 36 ;
of platinum. 69.
IGNEOUS ores, 26, 115-7, 137.
Igneous rocks and ores, 18-9, 26, 36,
83-4, 89, 04, 101-4, 137.
Impregnation ores, 37, 45.
Indicators, 40-1.
Iron, qualities, 129 ; history of, 129;
used before bronze, 129. Ores of,
120-47; alluvial, 147: agueous
MAGMATIC ores, 23-6.
Mallee limestones, 30.
Manganese, price, 149; qualities,
148. Ores, 148-50; distribution,
148, 150; formation of, 148-9 ;
residual, 149.
