The Kusko times., 1931-12-05

The surrounding district has been little prospected and deserves atten- tion in the hope that other similar, ore bodies will be found. ,.
 Kantishna District
 The lode prospects, Sef ,,.the. ekail- tishna district have beer eXamined4in detail by F. G. Wells, in so far. as the workings. are. now accessihle.s On. many of the properties the adrss. and. open cuts are. .caved and could not therefore be studied The district in+- cluded in this Investigation, is about. six miles wide and twelve miles long and was mapped .topographieaIly on, a scale of 1 to 4s,o00. Some 2S claims. have been patented, and many other unpatented claims are held.
 The country rock is composed of schist cut by few small bodies of intrusive rock. The general trend of the foliation of the schist is, E. 7os E., and the veins trend in much the same direction, though they cut across the foliation. .s The principal minerals of economic importance are free gold, auriferous. pyrite and ar senopyrite, silver-bearing galena, sphalerite, tetrahedrite, and stibnite.- The only commercial ore so far ex- tracted consisted of about 1900 tons that was valuable chiefly for it's sil- yer content, ,sthotgh yieldin galso con- siderable amounts of gold and lead. The workings from which this ore was taken are now inaccessible. :. In addition to the .lodes whose ore. runs high in silver, there are many veins carrying gold and other sul- nhides in which. the silver content. is, relatively slight.
 Mir, Wells states that the areaa shows excellent indications of rnln-- eralization, and that there is a high, probability that other veins not yet. mined rontai nore as valuable as that sSO that other deposits containing similar ore may be found. The type of min eralization and character of the ere ore indicate. that the ore extends to considerablytgreater depths than any so far:reachedq Sin mining. Whether or not there has been appreciable en- richment of the surface portions of the veins has, not yet been deter mined, but laboratory studies to an swer this question will be made.
 With itnEs completion of the auto mobile roast: from Mount Mckinley National Park to the Kantishna dis trict, the cost of operating mines, there will be considerably reduced, and. thess9district is considered to hold promise for both the mine operator. and the prospector.
 Mount Eelson District.
 i The Mount. Eielson area, formerly known-as Copper Mountain, in Mount Mckinley National Park, has been, studied in detail by J. C. Reed, and a topographich may of the mineralized zone has been made. Although about twenty> claims are no wheld in the vicinity of Mount Eielson, develops ment- work has been limited to a large number of small pits and trenches and three small adits, the longest. 90 feet long.
 Hitherto the lack of transportation. has. been a serious drawback to pros-, pecting, but the new park highway, at present under construction, will pass withi a mile of Mount Eielson, which is about 70 miles from. the railroad.
 The principal rocks of the region include thick series of thin-bedded limestone and calcareous shales, all intimately contorted and folded. These sediments are cut by mass of granite rock that forms the major I ~o~& of Mount C:oloo~ xLo