D
Daintree, on deposition of gold from chloride,51
Diamond drilling,173
Directors of companies,114et seq.
Dodge stone-breakers,69,70
Dolly,152
Drift, Origin of gold in,49
Dry blowing,18
Dugout,128
Duncan pan,91
E
Electricity as a motive power and transmitter,111,112
Electrolytic process of extracting gold,96-99
Elements, Table of,181,182
Eurieowie, Tin at,32
F
Filter,135,136
Fire, Mode of producing,137
Fire-lute,166
Flooded Stream, How to cross a,138
Flumes,63
Forge, Temporary,140
Freezing-points,184
Frue vanner,89,90
Fuels, Heat values of,184
Furnaces used in calcining,101et seq.
Fusing points,184
G
Gold, Value of,1;
Early notices of,1,2;
Origin and sources of,2-7;
Modes of occurrence,10,11;
Prospecting for,13et seq.;
Signs of,26;
Assaying, by amalgamation,30;
associated with tin ores,32,33;
Relation of, to volcanic action,36;
its probable mode of occurrence in early geological times,38,39;
Mode of deposition in quartz,39,55,57;
Formation of sulphides of,39,40;
Precipitation of, in pyrites,41,42,51-54;
Solution of, by mine water,42;
Opinion as to growth of, in drift deposits48;
Daintree on its deposition from chloride,51;
Wilkinson on its precipitation on iron pyrites,51,52
Gold (Alluvial) Origin of,17,49,50,51;
Prospecting for,17
Gold extraction,11,12,59et seq.;
necessity of scientific procedure,60;
German organisation,60;
early methods,61;
modern methods,61et seq.;
hydraulicing,62,65;
mills and crushers,66-72;
power and water for batteries,73,74;
ore feeders,74,75;
stamp mills,76-78;
screens,78;
blanket tables,79;
treatment of pyritous ores,80;
mode of saving the gold,81;
treatment of ferruginous ores,82;
cleaning and scaling plates,83;
retorting amalgam,84-86;
percussion tables,88;
Frue vanner,89,90;
pan concentrators,90;
amalgamators,91-93;
lixiviation,93et seq.;
calcination,100et seq.;
how to avoid loss in cleaning up,148
Gold-field, Mount Brown17,18
Griffin Mill,67,69
Grusonwerk ball mill,71
Gutters,20
H
Hammock,130,132
Heated bearings, Cooling compound for,163
Heat values of fuels,184
Horse-power of engines,144
amount required for pumping water,172
Horse-shoe furnace,103
Howell-White furnace,104,105
Huntingdon mill,69
Hydraulicing,62,65
Hydraulics,171
Hydro-thermal origin of early deposits,37,38
I
Interest Tables,193
Iron, prevention of rust on,165
Iron extractor,148
Iron sheets, size and weight of,189
Ironstone “blows” as indicators of lodes,26
J
Johnson, experiments on deposition of gold,55-57
L
Lamp, Slush,139
Leads, Course of,19
Le Conte, on ore deposits,36,37
Lemichel syphon,66,67
Lenticular lodes,24,25
Levelling instruments,160,161
Living places,127-130
Lobley, on gold,36
Lodes, nature of,8-10;
prospecting for,22;
grass as an indicator of,22;
not of igneous origin,23;
Quartz fragments as indicators of,23;
Usual trend of, in Australia,23;
Sinuous outcrops of,25,26;
Determining the value of,26,28,31;
Underlie of, in Australia,27;
Explanation of shutes in,43;
why junctions of, are richest in metallic ores,44;
proofs of their being formed now,44;
Newbery, on gold in pyritous lodes,47;
Double faulting of,72
Lode tin,32
Long tom,62
Loss in blasting, How to prevent,142
M
Machinery, Protection of, from rusting,166
Mear’s process,94
Measuring inaccessible distances,157;
the width of a river,157,158;
height of a tree,159,160;
height of objects,161
Medicine case,136
Mensuration,175
Mercury, Retort for small quantities of,143;
Mode of supplying, to mortar boxes,145
Mercury extractor,155
Metals,33
Mine managers,115et seq.
Mine surveying problems,176
Mining regulations,194-201
Misfires, How to deal with,141
Molesworth furnace,106
Monitor,64
Mount Bischoff tin mine,24
Mount Brown gold-field,17,18
Mount Morgan gold mine,23,94,95
Mount Shoobridge, Tin at,32
N
Names of common chemical substances,183
Newbery, Experiments by, on modern growth of lodes,44,45,53;
on gold in pyritous lodes,47;
experiments in depositing gold on sulphides,52,53
Newbery and Vautin process,94
New machines and processes, Advice as to adoption of,120-122
New Zealand, Mining regulations of,201
Northern territory hammock,130-132
Nuggets, Position of,17;
Formation of,17;
Origin of,50,53-58
O
Ore Deposits, Le Conte’s conclusions as to,36,37
Ore reserves, Calculation of,168-170
Ore values, Estimating,170
Organic matter as a precipitant of gold,51,52,53
Otto engines,110,111
P
Percussion tables,88
Pipes, How to clear,164
Plants as a source of water,134,135
Plattner process,94
Plummer blocks, Cleaning greasy,163
Pollok process,95
Power for mills,147
Prospect, First,29;
Determining value of,29,30,31
Puddlers,153-155
Pump,155,171
Purchase of mines, Advice as to,123
Pyrites as a precipitant of gold,41,42,51-54;
Modern deposition of,45;
Mode of occurrence of gold in,46,47
Pyritous ore, Mode of treatment of,80
Q
Quartz veins, Rosales’s igneous theory of,34;
objections thereto,35,36
R
Rainfall,178
Reef. SeeLodes
Retort for small quantities of amalgam,142;
and of mercury,143
Reverberatory furnaces,101et seq.
Right angle,158
Rivers, To measure width of,157,158
Robbery in gold-mills, Mode of preventing,124-126
Ropes, Durability of,173;
Qualities of,190
Rope-splicing,166
Rosales on origin of quartz veins,32-34
Rotomahana district, White and Pink Terraces in,36
Rust, Solvent for,165;
Protecting iron and steel from,165
Rutile,32,33
S
School of Mines, S. Australian,118
Screens,78,79
Shaft, Size of,19,27;
Logging up,27,28;
Depth of,162;
Connection of, with underground workings,176;
Data connected with,177
Sheet-iron, Thickness and weight of,189,190
Shutes, Explanation of,43
Signs,185
Silica terraces in the Rotomahana district,36
Silver ores,31,32
Silvering copper plates,149
Skey, experiments on formation of sulphides,39,40;
and on their properties,41
Sluice plates,156
Smelting, Rough,141
Soap, Serviceable,138
Specific gravity,181,182
Square roots,191
Squares,191
Stamp mills,76,78;
Power for,147
Steel, How to prevent rust in,165
Stetefeldt shaft furnace,106
Stream tin,32
Sulphide of gold, Formation of,39,40,45,46
Sulphides, Experiments on properties of,41,42,53;
calcination of,100et seq.
T
Tank, to find contents of,189
Telegraphic code,138
Tent,128-130
Thames gold-field, Siliceous sinter in,36
Thermometer scales, Table of,184
Thwaite-Denny furnace,105,106
Thwaite power gas system,110
Thwaites’ furnace,102
Timber, Data as to,174
Tin, Minerals mistaken for,32;
How to distinguish them from,33
Tin-mines at Mount Bischoff,24
Tin ores,32
Tree, To measure height of,160
Tulloch ore feeder,74,75
V
Vein, to find lost part of,167
Velocity of falling fluids,188
W
Wages, Table for calculating,192
Washing table,79
Water, Purifying,132,133;
Roots as a source of,134,135;
Filtering of,135;
Mode of supplying, to stamper boxes,146;
Plan for raising,163;
Data regarding,171;
Fresh and Salt, compared,188;
Pressure of,189
Water bag,136
Waterless power,109-112
Watson & Denny pan,90
Weight of materials,180
Weights and measures,186,187
Welcome nugget,54,55
Welcome Stranger nugget,54
Wilkinson, on deposition of gold in iron pyrites,51,52
Windlass,153
Wolfram,32,33
Woodside nuggets,57
Printed byBallantyne, Hanson & Co.
Edinburgh & London
A SELECTION FROM
CHARLES GRIFFIN & CO.’S PUBLICATIONS
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SCIENTIFIC AND TECHNICAL WORKS.