Arizona weekly journal-miner., 1902-03-12
MINES AND MINING.

An immense gold strike northwes
 of Patagonia has been reported to tn
 Vidette. It is said to be the richest
 find ever made in southern Arizona
 A great many claims have been locat
 ed and it is said that hundreds oi
 people are camped on the ground.
 The Congress Gold company hai
 been reducing its force of miners re
 gently. A Miners union was recently
 formed in that campand it is claimed
 that the action of the company in
 stopping work at certain places in the
 mine is due to this fact.
 The Brooklyn mining company has its mill at Dewey almost completed The company recently purchased a claim from George White and Harry Minuse near Dewey and will work the ore from this mine in the mill.
 B. Silverman, the tailor, and two or three other parties recently located claim south of th4 old Bullwhacker mine from which they have been talk ing out some good ore.
 J. H. Hise left today for Walnut Grove district to commence work on the Big Rebel mine, which was re- gently sold to party of eastern cap italists. A company known as the Big Rebel Gold Mining company has been incorporated by the purchasers, under the laws of South Dakota, and the property transferred to it under the supervision of which MT. Hise will conduct operations. He says it is the intention of the company to push the work just as rapidly as pos sible. The claim was formerly owned by A. A. Moore.
 The Storm Cloud group of mines owned by Fred Williams, out near Cash ground, has been sold to Chi cago people for forty thousand dol lars, through E. M. Sanford, attorney. Arrangements are being made to sink a new double compartment shaft to 800 feet, and work is intended to be commenced by the 24th of this month. All the old timers are surely pleased to see Fred after years of labor realize on his property. It is said to be opened up with tunnels but showing only surface rock in large lodges. It is contemplated that the old work ings shall be avoided and the propos- ed shaft shall go through new ground to sufficient depth below water to as certain the general character of the ore.
 P. c. Dubois, field assistant of the State Mining Bureau, writes as fol- lows Iegardlng simple test for cop per ore, one that any prospector may make: My observations in the field concerning the needs and difficulties of prospectors in relation to the cop per ores which they so frequently en- counter, and to which so many have recently turned especial attention, leads me to suggest for their benefit simple method of determining the presence and the approximate amount of copper in an ore sample. If a prospector will provide himself with a bottle of nitric acid, and bottle of amonia, and two or three good sized test tubes, he can easily learn how to test ore for copper. Pulverize a small portion of the ore to be tested in mortar or between two fiat stones. Put about a teaspoonful of the pull verized ore in the test tube and care fully add nitric acid, a few drops at a time at first, so that in case violent ac- tion should take place it would not throw the contents of the tube out. After the ore in the tube has been covered with the nitric acid, warm the tube over the flame of a candle until the metallic portion of the ore has been dissolved. Of course, the quartz will not enter into solution. Solution will take place in a few minutes. Then dilute the solution with water until the tube is about three-quarters full, then add ammonia cautiously, drop by drop. If copper be present in the ore, the solution will become colored blue. A large percentage of copper will give very deep opaque blue-one per cent of copper will give a much fainter shade. A few tests made in the above manner, com pared with assay results of the ore. will educate the prospector to judge very closely as to the amount of cop per contained in his samples"
 When Humboldt declared in 1857 that Arizona was the treasure vault of the world, his utterances were con sidered to be the rawlings of ''crazy Dutchman;" but when a man, fla miliar with mining, travels even through Yuma and Yavapai counties and notes their progress and develop ment of their wonderful mineral re- sources, he appreciates that the pre- dictions of Humboldt are fast proving to be a reality. - Boston Mining Ruraau