Arizona citizen., 1878-11-09
The New EI Dorado.

The following appeared as an editO
 rial in the Philadelphia Press (For
 ney's) of October %:
 Recent explorations show that Ari
 zona, which has heretofore been re.
 garded as a sterile and unproductive
 region, is the richest mineral region in
 the world. Humboldt, half century ago, predicted that there would be
 mines discovered in Arizona which
 would surpass any found In Mexico, rich as they are. Situated as it is, says the New York American Exchange,
 between the Sierra Nevada Mountains on the west, and the Rocky Mountains on the east, at the point of intersection of the great silver veins of each, and on the richest mineral belts known, and where the great mineral lodes of Mexico join those of the north, analogy would suggest the richness of the mines were there no indications on the sur face. Where the great veins of the Southern Cordilleras, the Sierra Neva- da and Rocky Mountains, all rich in minerals, meet, it is only natural to infer is the joint which must produce great and exceedingly rich mines. This point of meeting is Arizona.
 In Nevada, Colorado and California gold and silver is found only at great depths in the earth. Most of the sil- yer in the Comstock vein was obtained below the 1900 level, while in Arizona many mines are being worked that have paid all expenses, and some of them have put as much more into the treasury of the company, from the ore taken from the top downward. While the Comstock veins are worked at an expense of $50 per ton, Arizona ores can be mined and milled at an expense not to exceed $5 per ton. Other aG- vantages which the Arizona mines pos sess are:
 Their true Assure veins with we'll de. fined wall rocks. Second: Their great width, permaDency and freedom from breaks. Third: The fact that they are nearly all perpendicular. Fourth: They are remarkably free from zinc, anti mony, arsenic and other base metals, sulphur. Fifth: They arel exceedingly rich in gold, silver and copper. Sixth: The amount of gold and silver increases as depth is obtained Seventh: They are easily worked, and al small expense as compared with the mines of Colorado or Nevada Eighth As rnle ihPJr ara well sunDlied with 1 wood and water-two very necessary requisites. Ninth: They are found in the finest climate in the world,
 In Arizona the gold and silver-yeined rocks crop out on the surface of thel earth. Subterranean mineral wealth is betrayed by gIttering veins that streak the superficial soil. Professor Cox of Indiana, who recently examin- ed the Arizona mining region, says that the mining property of South Ari- zona, once developed, would supply the world with precious metals. Three shafts in the Tough Nut mlne in the Tombstone district, averaging ten feet deep, show a solid body of ore, which, at the low average of $7OO to the ton, will yield $2,400,000. He was present when assays were made of ore from this mine going from $1, 900 up to $27, 600 per ton. He is of the opinion that the district is a body of ore which will surpass any mining discovery yet made. The Santa Cruz valley, the highway from the lower portion of the Gulf of California, and the table lands of Mex ico into Arizona, and the wonderful plateaux region, is in the center of the immense mineral wealth of Arizona. In its lap lie the principal towns of the Territory. The Southern Pacific Railroad from San Francisco has al- ready reached Yuma on the river Gila, on the western frontier of Arizona, a stream that empties into the Gulf of California, and in year hence 1t will have traversed Arizona, meeting the
 converging eastern roads at Calabasas
 and opening a continuous line of com lmunication between the Atlantic and
 Pacific. When Arizona is opened to
 intercourse it will attract capital and
 labor from all parts of the globe.