fullscreen: The Elements of economic geology

SUBJECT INDEX 
ALITE, 187. 
Alluvial deposits, 71, 128. 
Alluvial goldfields, 53; ores re 
deposited, 32, 37, 110, 147 ; cop: 
per, 95; lead, 107; zinc, 110. 
Aluminium, 152-6; production of, 
153; uses and separation, 152; 
(cf. Bauxite). 
Anthracite, 261, 264-5, 268, 271-2, 
Antimony, price, 125; qualities, 
125; ores of, 125-7; China, 
chief producing country, 125; 
distribution, 126; formation, 
126-7; replacement deposits, 
126-7. 
Apatite, 200-1. 
Arsenic, qualities, 127; ores of, 
127-8; association, 127; pro- 
duction, 128. 
‘“ Artesian ”’ wells, 231. 
Asbestos, 160-1 ; price, 161 ; varie 
ties and uses, 160, 
Asphaltic limestones, 32. 
BaNKET in South Africa, 57-63; 
in West Africa, 51, 
Barysphere, 16. 
Baum scale, 276. 
Bauxite, 30, 153-6; composition, 
153 ; formation, 153-4 ; uses and 
qualities, 155-6. 
Bedded mineral deposits, 31, 154, 
199, 201-5; bedded ores—cop- 
per, 82, 93-5 ; ironstones, 144-7 ; 
lead, 108; tin, 74-5. 
Bentonite, 174. 
Block-lode, 8. 
Bismuth, 129 ; mainly alluvial, 128; 
price, 128 ; uses, 128. 
Bittern, 31. 
Bitumen veins, 183, 280 (see Coa 
and Oil). 
Bog iron ores, 31, 147. 
Bonanzas, 102. 
Bort, 165. 
Brea, 280, 282, 289. 
Building stones, 175-82 ; air, effect 
of, 176; baryta method of pre- 
servation, 181-2; changes of 
temperature, effect of, 176; de- 
cay, causes of, 175; dolomite, 
180; Hirschwald’s test of weaken- 
ing by frost, 178; limestones, 
180; microscopic examination of, 
179; organic agencies, attack by, 
176; Panama ‘ breaks,” 179; 
Parliament House, decay of 
stone, 175, 180; resistance to 
shearing, 177; sandstone, 180; 
slate, 181; specific gravity of, 
178; stone preservation, 181; 
tests of durability, 177-8; varie- 
ties of, 180 ; water, effect of, 176 ; 
of Westminster Abbey, 175, 181 ; 
wind, cutting action of, 176. 
CAPEL, 28. 
Carbonado, 165. 
Cassiterite, 52, 71. 
Celite, 187. 
Cements, 185-9; alite, 187 ; celite, 
187 ; classification, 185; defini- 
tion, 185 ; meaning of name, 185 ; 
hydraulic cement, 186; its redis- 
covery, 185; its nature, 187; 
origin of, 188; qualities, 189. 
Gypsum, 188 ; hard plaster, 189; 
plaster of Paris, 188. Portland 
cement, 187 ; price of, 188. 
Chromium, 150-1; distribution, 
150-1 ; price, ISI; qualities, 150; 
secondary origin of, 151. 
Clay, 168-74, 191-4, composition 
of, 168; essential properties of, 
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