Embolite | Chlorine, 13; bromine, 20; silver, 67. Megabromite | Chlorine, 9; bromine, 27; silver, 64. Mikrobromite | Chlorine, 18; bromine, 12; silver, 70. Bromyrite, or | Bromine, 43: silver, 57. bromic silver | Iodyrite, or | Iodine, 54; silver, 46. iodic sliver | 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. =========================================================================== Specific Weight of Weight of NAME. COMPOSITION. gravity. cubic inch cubic foot (ounces). (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; | | |