Arizona republican., 1905-09-22
THE GOLOFIELD. BONANZA
Opinions of Capible Men Concerning
 TeIluriUm Finf.

Major w. A Stanton formerly on the staff of the late John w. Mackay at Virginia City, was among the prom inent mining men who returned yes terday from the scene of the great discovery on the property of the Bull frog Extension Mining company, where a; seam of tellurim ore has been opened up that assays S2 per cent pure gold. Major Stanton made a careful examination of the property. With reference to the find, Major Stanton stated:
 Ut looks as though another Isabella had been opened on the property of the Bullfrog Extension Mining com p9ny. The ore is unquestionably tel lurium, the baser metal that carries the highest percentage Of gold. The discovery is of immeasIrable impor- tance 10 the whole Of the southern Ne vada mineral zone. Greatest interest attaches to the find as it proves that ore bodies of the district in which the property is situated are impregnated with exceptionally rich minerals that come from great depth This assures permanency to the greatest possible depth to which mining operations are practicable.
 Cripple Greeks great richness completely carr.eI If its feet the mining world When the Isabella strike was chronicled. in the fall of 1898, it astonished the whole of the civilized world. Nothing Of the kind had ever been heard of. Now, the BulIfrog Extension mine is of equal richness and promises to equal, if not eclipse, the great property on the Cen tennial states wonderful camp.
 The naturalization of the vein sys- tenn of the Eullfros Extension mine unquestionably came from tremendous depth The sOl:4-in-ls Ast -arry tel lurides are invariably forced from be- low. through the cleavages that mark the lines of least resistance If fol- lowed. the same will in every prob ability. lead to the opening up of one of the greatest bodies of high grade tellurium ores ever disclosed iI west ern mining sections
 Tn the Upheaval of form7t tive ages. rents or Assures of the kind found in the Bullfrog Extension mine were made in Jne upEfts. During the cool ing processes that followed, accOmpa- nied by the gradual contraction of the earth near the surface. In the in- stance Of the Bullfrog Extension, these waters carried in solution. tellurides- As the formation gradually cooled these solutions deposited their bur Gens along this cleavage. tmrregnating the body of quar,z that encases the seam."
 Continuing. the major said: "It was very. natural that the superiuten- dent and his men first mistook the tellurium for iron suIphides. The two metals resemble each other so closely the fire test is the only means by which one can be distinguished from the other. Had it not been for the fact that one of the miners had work ed in a Cripple Creek mine, in all probability the rich ore would have been thrown over the dump as being of very little importance"
 In speaking of the future pos=ibil- ity of the mine, Major Stanton stated it held out the greltest promise. The ores that are being extracted are of splendid grade. and future develop ments should lead to the exploitation of one Of the greates. producers in the mining regions of the west. and one that will add immeasurably to the prestige of NevaGa.
 J. F. Mitchell. consulting and min ing engineer. at different times dur ing the past twenty years superintend- ent Of the Ute and Ulay mines at Lake City; general manager of the Yankee Girl at Red Mountain. Colo. and of the Enterprise at Rico; after wards superintendent of the January mine at GoldfeId and consulting en- gineer of the Jumbo; and at present general manager of the Portland mine in this district. in speaking of the discovery of tellurium ore in the Bull frog Extension mine at Bullfrog, said:
 q have examined the Bullfros EX- nor There is not a characteristic feature of mfnerology that I know of that could add greater importance to the property than the occurrence of tel lurides. as now disclosed by the work in the tunnel. which is in for dis tance of fully 15O feet. The exist ence of this classification of the min eraI family gives every assurance of great permanency to the deposits of gold ore in the mine. In the deposi- ton of telluride, the mineralizat-on invariably comes from tremendous depth.
 "The cleavage or Assure where the telIurium has been found was formed by a split in the formation during an upheaval of past ages, marking the line of least resistance. The thermal waters from below were forced up
 
 face gradually contracted. During the cooling process that followed. these waters deposited their burden of gold along the Assure and impreg- mated the adjoining quartz formation. The narrow seam is undoubtedly a stringer, as we call it, from much more extensive Assure and, if followed, will unless all teachings of geology fail, lead to a ledge of exceptionally high grade ore.
 "From every indication at hand. I look to see the ore bodies of the mine go to as great depth as it is practi- cable to prosecute operations"
 Referring again to the Bultrog EX- tension Mining compauys property, MT Mitchell stated that he had upon several occasions advised his associ- ates in the east to acquire the prop erty, if possible, as he had from the