170 



INDEX. 



Blowpipe flames, 25 



temporary, 31 



Blueground, diamond-bearing, 90 

 Bohemia, arsenical pyrites of, 54 

 Bone ash cupels, 118 

 Borax, 87 



treatment of a mineral with, 

 28, 29, 30 



as a flux, in 



Brazil, diamond fields of, 89 

 Brown coal, 85 

 Buddie, 131 

 Bunnah, rubies in, 89 

 Burra Burra mines, 49 

 Button, to weigh gold or silver, 

 "3 



CAIRNGORM, 97 



Calamine, 82 

 Calc spar, as a matrix, 7 



as a standard of hardness, 36 



nature of, 88, 105 

 California, deep mines of, 8 



gold in, 54, 60, 61 

 Cambrian formation, lodes in, 56 



rocks, 17 



Canada, gold in, 60 

 Carbonate, test for a, 31 



of lead, 67, 77, 78 



of lime, 88 



of copper, 48 



of zinc, 82 



of iron, 65 



of soda, treatment of a sub- 

 stance with, 26, 30 



of soda, as a flux, 1 1 1 

 Carboniferous rocks, 17 

 Carnelian, 97 

 Cassiterite, 80 

 Cat's-eye, 97 

 Cat's-eye, characteristics of the 



precious stone, 96 

 Cat's-eye, quartz, 97 

 Cellular quartz, 4 

 Ceylon, gems in, 89 



gold in, 58 



coal in, 84 



Chalcopyrite, 46 

 Chalk, 14, 1 6 



red, 63 



Chape au de fer, 7 

 Charcoal, as a support in blow- 



pipe analysis, 26 

 Cheshire, copper deposits in, 48 

 Chili, silver ore in, 78 

 Chloride of sodium, 87 

 Chlorination process, 129 

 Chlorite, 103 

 Chromium, 43 

 Chrysoberyl, 96, 97 

 Chrysolite, 97 

 Chrysoprase, 97 

 Cinnabar, 70 



test for, 29, 71 



treatment of, 125 

 Citron quartz, 97 

 Claim, value of a mining, 9 

 Clay, 14, 101, 102 



iron, Jaspery, 64 

 Cleavage of rocks, 19 

 Clinometer, 22 

 Coal, 84 



measures, 17 

 Cobalt, tests for, 28, 29, 109 



nitrate of, as a test, 29 



earthy oxide of, 43 



bloom, 44 



tin white, 44 



stains on the cupel, 118 

 Colorado, silver ore in, 77, 78 

 Colorados (of South America), 77 

 Colour, streak, and lustre of 



minerals, 32 

 Compass, 23 

 Comstock lode, 77 

 Concentration of ores, 130, 131 

 Concentrators, 131 

 Conglomerates, gold in, 59, 60 

 Coolgardie, 58 

 Copper pyrites, metallurgy of, 126 



tests for, 27, 28, 29, 30, 43 



assaying for, 122 



stains on the cupel, 118 



ores, occurrence of, 44-49 



glance, 45 



pyrites, 46 



grey, 46 



