Taken from the Valenzuello and San Patricio Mines, on San Juan del Rio Ranche, Sonora, Mexico: Valenzuello. No. 1.-1 oz. black quartz from top of excavation, contained at rate of 5 grs. metal per pound. 5 grs., value 0.017875 Silver; 1 lb.: 2000 lbs.:: .017875-$35 75 No. 2.-1 oz. from excavation 40 feet below surface, contained at rate of 17.309 grs. metal per pound. 17.309 grs., value 0.07343 Silver; 1 lb.: 2000 lbs. :: .07343 $146 86. 0.02171 Gold; 1 lb.: 2000 lbs. :: .02171= 43 42. Yield per ton,‒‒‒‒‒‒$190, 28 San Patricio. No. 1.-1 oz. from vein outcrop on summit ridge, contained at rate of 6.925 grs. metal per pound. 6.925 grs., value 0.023666 Silver; 1 lb.: 2000 lbs. :: .023666=$47 33 0.013 Gold; 1 lb. Yield per ton,-----$73 33. No. 2.-1 oz. from vein outcrop on summit ridge, contained at rate of 20:06 grs. per lb. 20.06 grains, value 0.0865 Silver; 1 lb.: 2000 lbs. :: .0865-$173 00 Yield per ton,------$221 00 Accompanied by zinc, lead, antimony and arsenic, but quantities not determined. Cinco Sonores Mine. Fahlerz and Red Oxide, 46.5 per cent. Copper, $72 50 Silver per ton. Don Juan Mine. Fahlerz and Red Oxide-33.5 per cent. Copper, $51 50 Silver per ton.. Zinc, and antimony, and traces of gold. Don Eduardo Mine. Tetrahedrite-37.8 per cent. Copper, $65 30 Silver per ton. Pittsburgh, Pa., August 31, 1866. CUMMINGS CHERRY, JAMES CHERRY. RECAPITULATION. San Patricio.-Six samples of ore from this mine on the San Juan del Rio property were assayed by the eminent chemists named above, with the following comparative and aggregate results, per ton of 2000 lbs. By Prof. WAYNE, No. 1, gold value,- Silver. Gold. $1,672 16 22 03 $2,189 58 An average of $364 93 to the ton of ore. Valenzuello.-Only two samples of the ore from this mine have been assayed, both by Messrs. CHERRY, and yielding to the ton of ore as follows, in gold or coin value: Or an average, per ton, of $30 gold and $91 30 silver, or $121 80 of both. Cinco Sonores, Don Juan, and Don Eduardo.-These mines, it will be remembered, are not on the property of the "Cincinnati and Sonora Mining Association," but will be more or less dependent upon the water power on their property for beneficiating their ores. The assays above, shows an average richness per ton, of $53 79 in Silver, (coin value,) besides an average yield of Copper of 43.69 per cent., or 974 lbs. out of every 2000 lbs. SILVER MINES IN MEXICO. Senor Zambrano's two mines in 24 years yielded $55,000,000, or per year. $2,291,667 The "San Dimas" in 25 years yielded over $25,000,000, or per year, over 1,000,000 The "Pavillon" yielded $20,000 per day, and divided per year over.. 6,000,000 1,833,334 18,000,000 The "Gallego" in 6 years yielded $11,000,000, or per year per year. 8,571,429 The average yield of these 8 mines, per year, was $4,930,646. These statistics are from the mining records of Mexico, and many of them are from the revenue tax or "King's-fifth" reports, and calculated from the tax actually paid—a reliability that will not be disputed in these days. This tax has long since ceased to be assessed. ᎡᎬᏢ GENERAL REPORT,* BY CUMMINGS CHERRY and JAMES CHERRY, Geologists and Mining Engineers. To the Members of the Cincinnati Mining and Land Association of Sonora, Mexico: GENTLEMEN: We arrived at Guaymas, Sonora, on the 10th of December, 1865, and on the morning of the 13th took our departure by stage for Hermosillo. Our short stay at Guaymas was sufficiently protracted to impress us with the important part it must play in the future of Sonora. The town is situated on the Gulf of Californi, in Latitude 27° 42′ North. Its harbor is eminently the best on the Western Coast of Mexico, being much superior to either San Blas or Mazatlan; and because of the trade winds, particularly desirable as a port for the trades of the East Indies and China. The bay consists of an inner and outer one-in all four to five miles in length- almost completely sheltered from the winds by the bold hights of the Pajaros on the east, and the islands of Teira Firma, San Vicente and Petayas on the west, leaving the channel, narrow and deep, between them. Another entrance, Boca Chica, occurs between Pajaros on the south and Cochin on the north. The tides are irregu lar, being governed by the winds of the Gulf, seldom rising and falling more than four or five feet. The depth of water [Portions of this Report, of little or no interest to the general reader, are omitted.] |