| NAME. | COMPOSITION. |
| Native gold | Gold; silver up to 40 per cent.; copper and iron. |
| Quicksilver | Mercury, with sometimes a little silver. |
| Amalgam | Silver, 26 to 35; mercury, 74 to 65. |
| Arquerite | Silver, 87; mercury, 13. |
| Gold Amalgam | Mercury, 58 to 61; silver, 0 to 5; gold, 38 to 42. |
| Native silver | Silver, alloyed with other metals. |
| Bismuth | Bismuth, 27; lead, 33; silver, 15; iron, 4; copper, 1; sulphur, 16. |
| Native copper | Pure copper, with small quantity of silver through it. |
| Tellurium | Tellurium, with gold and iron, varying quantities. |
| Antimony | Antimony, containing at times silver, iron, or arsenic. |
| Discrasite | Antimony, 23; silver, 77. |
| Silver glance | Sulphur, 13; silver, 87. |
| Naumannite | Selenium, 27; silver, 73. |
| Eucairite | Selenium, 32; copper, 25; silver, 43. |
| Hessite | Tellurium, 37; silver, 63. |
| Stromeyrite | Sulphur, 16; silver, 53; copper, 31. |
| Sylvanite | Tellurium, 56; gold, 28; silver, 16. |
| Nagyagite | Tellurium, 13 to 32; lead, 51 to 61; gold, 6 to 9. |
| Sternbergite | Sulphur, 34; silver, 32; iron, 34. |
| Miargyrite | Sulphur, 21; antimony, 43; silver, 36. |
| Pyrargyrite, or ruby silver | Sulphur, 18; antimony, 23; silver, 59. |
| Proustite, or ruby silver | Sulphur, 20; arsenic, 15; silver, 65. |
| Freieslebenite | Sulphur, 19; antimony, 27; lead, 30; silver, 24 |
| Tetrahedrite, or gray copper | Sulphur, arsenic, antimony, silver, copper, iron, zinc, and mercury, in most varying proportions. |
| Polybasite | Sulphur, 16; antimony, 13; silver, 71. |
| Stephanite | Sulphur, 16; antimony, 14; silver, 70. |
| Xanthocone | Sulphur, 21; arsenic, 15; silver, 64. |
| Fireblende | Sulphur, antimony, with silver, up to 62 per cent. |
| Cerargyrite, or horn silver | Chlorine, 25; silver, 75. |
| Embolite | Chlorine, 13; bromine, 20; silver, 67. |
| Megabromite | Chlorine, 9; bromine, 27; silver, 64. |
| Mikrobromite | Chlorine, 18; bromine, 12; silver, 70. |
| Bromyrite, or bromic silver | Bromine, 43: silver, 57. |
| Iodyrite, or iodic sliver | Iodine, 54; silver, 46. |
| Jalpaite | Copper and silver glance. |
| Acanthite | Sulphuret of silver. |
| Crookesite | Copper, thallium, silver, and selenium. |
Charles P. Stanton, geologist, writes to the Prescott “Miner,” under date of Nov. 9th, 1877, as follows: The great carboniferous basin of Arizona—and in all probability of the world—exists within 140 miles of Prescott. This immense coal deposit makes its first appearance in Southwestern Colorado and Northwestern New Mexico; but its great nucleus extends from Tierra Ausarilla, in Rio Arriba, New Mexico, to the Colorado River, a distance of 276 miles, and from the San Juan River, a distance of 138 miles. This immense area of 38,088 square miles is one continuous mass of coal. It lies between the parallels of 100 and 112 west longitude, and 35 and 37 north latitude, and all in Yavapai County.
Weight and Specific Gravity of the Common Minerals.
| NAME. | COMPOSITION. | Specific gravity. | Weight of cubic inch (ounces). | Weight of cubic foot (pounds). |
| Gold, pure | 19.3 | 11.169 | 1,206.25 | |
| Gold, native | Gold, silver, copper, iron | 17.5 | 10.128 | 1,093.75 |
| Silver, pure | 10.6 | 6.134 | 662.50 | |
| Silver, native | Silver and other metals | 10. | 5.787 | 625.00 |
| Copper, native | Copper | 8.9 | 5.150 | 556.25 |
| Vitreous Copper | Sulphuret of copper, 21; copper, 79 | 5.6 | 3.298 | 350.00 |
| Copper pyrites | Sulphur, 35; copper, 35; iron, 30 | 4.2 | 2.430 | 262.50 |
| Red copper | Copper, 89; oxygen, 11 | 5.9 | 3.414 | 368.75 |
| Gray copper | Sulphur, arsenic, antimony, silver, copper, iron, zinc, and mercury in most varying proportions | 4.8 | 2.777 | 300.00 |
| Malachite | Carbonic acid, 20; oxide of copper, 72; water, 8 | 3.8 | 2.199 | 237.50 |
| Tin oxide | Oxygen, 22; tin, 78 | 6.7 | 3.877 | 418.75 |
| Tin pyrites | Tin, 27; copper, 30; iron, 13; sulphur, 29 | 4.4 | 2.546 | 275.00 |
| Lead, pure | 11.4 | 6.597 | 712.50 | |
| Galena | Sulphur, 13; lead, 87 | 7.5 | 4.340 | 468.75 |
| Carb. of lead | Carbonic acid, 16; oxide of lead, 84 | 6.4 | 3.715 | 400.00 |
| Zinc | 7.0 | 4.051 | 437.50 | |
| Red oxide of zinc | Zinc, 80; oxygen, 19; oxide of manganese | 5.4 | 3.125 | 337.50 |
| Antimony | 6.8 | 3.935 | 425.00 | |
| Gray oxide of antimony | Sulphur, 29; antimony, 71 | 4.5 | 2.025 | 281.25 |
| Nickel | 8.4 | 4.861 | 525.00 | |
| Arsenical nickel | Arsenic, 56; nickel, 44 | 7.5 | 4.340 | 468.75 |
| Sulphuret | Nickel, sulphur, arsenic | 6.2 | 3.588 | 387.50 |
| Cobalt pyrites | Cobalt, 58; sulphur | 5.0 | 2.893 | 312.50 |
| Iron, cast | 7.2 | 4.166 | 450.00 | |
| Iron, wrought | 7.78 | 4.496 | 486.25 | |
| Iron pyrites | Sulphur, 53; iron, 47 | 4.9 | 2.835 | 306.25 |
| Magnetic iron | Oxygen, 28; iron, 72 | 5.1 | 2.951 | 318.75 |
| Arsenical iron | Arsenic, 46; sulphur, 20; iron, 34 | 5.7 | 3.298 | 356.25 |
| Specular iron | Oxygen, 30; iron, 70 | 4.9 | 2.835 | 306.25 |
| Hematite | Oxide of iron, 86; water, 14 | 4.0 | 2.314 | 250.00 |
| Uranium, or pitch-blende | Oxygen, 15; uranium, 85 | 7.0 | 4.051 | 437.50 |
| Baryta or heavy spar | 4.0 | 2.314 | 250.00 | |
| Lime rock | 3.0 | 1.736 | 187.50 | |
| Calc spar | 2.7 | 1.562 | 168.75 | |
| Fluor spar | 3.15 | 1.822 | 196.87 | |
| Quartz | 2.69 | 1.673 | 167.452 | |
| Granite | 2.78 | 1.608 | 173.75 |
Note.—A vein of ore one inch thick, six feet long, and six feet high, will measure three cubic feet; two inches, six cubic feet, and so on in proportion, allowing three cubic feet for every inch of ore in the lode, six feet high and six feet long.
Excellent Advice to the Emigrant Traveler
Is given by the California Immigrant Union, No. 248 Montgomery Street, San Francisco, which, if heeded, will be of service:
1. Buy your tickets for passage on railroad or steamboat, only at the office, before starting. Many of the runners who offer tickets for sale in the streets are swindlers. If you intend to go in a steamer or ship, examine the vessel before getting your ticket, and engage a particular berth or room in a part of the vessel that is clean, well ventilated and just comfortably warm.
2. Never show your money nor let any stranger know that you have any. Thieves prefer to rob emigrants, who generally carry money with them, and cannot stop to prosecute them, and have no acquaintances to aid in the prosecution. Do not mention the fact that you are an emigrant to persons who have no business to know it.
3. Never carry any large sum of money with you; you can always buy drafts at banks, and if you are going to a strange place you can give your photograph to the banker to forward to your destination, so that you can be identified without trouble when you want to draw your money.