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