Arizona republican., 1899-05-17
GEORGE H. SMALLEY.
GRAND CANYON MINERALS

The Grand Canyon of the Colorado river, in Arizona, is one of the grand est of natures works. Those who have. never visited it can form no cor cept1on Of it's solemn beauty and maj esty; but 1t possesses other attractions than those of scenic heauty. Ire cease iess securing Of the Colorado river through thousands of feet of sed> imentary beds and deep inlJo the un- derlying crystalline rocks, has exposed to view mineral bearing veins in the Archaean and ore bearing horizons in the I1wer members of the sadimentary beds Of unknown extent. The possi- bihties of this region can only be sur missed. The Arch2ean locks in cer- tain portions of the canyon are known to contain veins carrying ircn and copper, and the natural inference is that geld and other meals are there also. Lying upon these uptur1ed schists, granite and other rocks com n9n tc the Archaean. are the nearly hoBizOntal beds of the Silurian, and. higher, the Deyonian and Carbonifer- ous formations. The rocks of these three geological ages are well known throughout the west-in Colorado, Utah and Nevada ,larticu2rly-to be the repositories of large and valuable ore deposits. The lime5tones and quartzites are mos5 frequently ore bearing. In the states referred to ores occur associated with sheets and dykes of intrusive rocks and also in massive eruptive rocks, ss at Cripple Creek and in San Juan county in Colorado. In the Grand canyon are exposed hun tlTeds of feet of limestones and quartz ties, ang in s1Ene localities these are irtercal ated by sheets Of eruptive rock and cut by vertical GFkes. Lead car bonE1a ores have haen found in several localities, CIe not far from the Little Colorado. 0nIy the difficulties OI transp o-ts---1 to be over come are a drawback to prclp---ing in this Ie- glen. Since lead-silver ores are known to exist i,here, it is not unreasonable to think that gcGd as well may be round where the geological conditions gre So fav3-t1ie. The lea1-silver ore thus far fCUnd is of very good grade; II Is chiefly carbonate Of lead, carry Ing chloride of silYer-a smeiting ere AerIal tranWays, OEe-3ted by water power furnished by the Colorado river may be means of solving the trans pontatiOn problem. The bottom of the canyon caT ba rcactaed at several places, but the cost of packing ore cut on rugged trails to a height of 5000 Or 6,000 feek is t:2c, costly an undertake ing for any ordinary ores to stand Mining and Scientific Press.
 MINING NOTES.
 The P,omosa placer district is at tracing attention and the miners there are doing well. Mir. Martinez made 2 strike and has since been. talk ing out SS ger day with a dry washer. Varcia & Martinez sunk a shaft twan- ty-fve feet on the Cat9rina. near Ty- sons Well, and got $50 in coarse god on bedrock. c. Manuel picked up 9 nugget worth S20. Nuggets ranging between s3 and S10 are found every day. There are ',kiTty men in camp
 A cooperative company of miners are working the Wicker mine in the Hassayampa, in Yavapai county and making a success. arrangements are bsing made fo~ a mill and concentrat- rr. The mine is well developed
 J. E. D0an. a prominent mining man or Les Angeles. was in Yuma the first of the week making preliminary ar engagements for the opening up and operation Of large copper mine near the Colorado river twenty-five miles above Parker. The group of mines consists of fifty-six claims, on which several hundred feet of development