Arizona Gold Placers and Placering
Table of Contents
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Part I: Arizona Gold Placers
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General origin and features of gold placers
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9
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General distribution of Arizona gold placers
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10
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Relation to physiography
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12
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Relation to pediments
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12
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Relation to streams
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13
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Relation to regional geology and types of veins
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13
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Yearly rainy seasons of Arizona
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13
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History of Arizona gold placer mining
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13
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Production
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14
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Yuma County gold placers
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15
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Yavapai County gold placers
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32
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Pima County gold placers
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53
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Maricopa County gold placers
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65
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Cochise County gold placers
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68
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Greenlee County gold placers
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73
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Pinal County gold placers
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74
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Santa Cruz County gold placers
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76
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Gila County gold placers
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79
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Graham County gold placers
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81
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Mohave County gold placers
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82
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Coconino, Apache, and Navajo Counties
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88
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Part II: Small Scale Gold Placering
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Introduction
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91
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Facts about gold
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91
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Identification of placer gold
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91
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Physical properties of gold
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92
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Gravity concentration
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92
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Amalgamation
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93
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Size of gold particles
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94
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Seeking placer gold
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94
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Placer equipment and methods
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95
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Panning utensils
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96
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Rocker (cradle)
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99
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Long tom
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104
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Sluices
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107
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Small sluice
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110
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Wet methods vs. dry methods for gold extraction
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112
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Dry concentration
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112
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Blanket method
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113
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Dry panning and blowing
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113
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Dry washers
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113
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Separating gold from gold amalgam
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115
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Gold flotation
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120
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Appendix to Part II
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Selling gold
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123
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Bibliography
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123
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Tables and conversion data
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125
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Troy weights and measures
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125
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Equivalents
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125
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Liquid volume and capacity equivalents
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125
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Weights of materials
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126
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Part III
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Suggested List of Equipment for Prospecting in the Southwest
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127
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Prospecting tools
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127
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General camping equipment
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127
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Cooking equipment
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127
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Medical and first-aid supplies
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127
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Part IV
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Food Suggestions for a Prospector
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128
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Part V
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Treatment of Sunstroke or Heat Prostration
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131
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Part VI
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Information on poisonous animals
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132
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Part VII
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Laws, regulations, and court decisions in relation to the location and retention of gold placer claims in Arizona
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135
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