Arizona republican., 1914-02-15

Of years-as far back as 1881. An drew J. Talbert mined some ore and sent it to Leadville. where it was tested for gold. silver and copper. The report stated that it carried $5 gold per ton
 "The most typical ore is a sand stone so impregnated with yellow carnotite that the color is decidedly noticeable and containing small kid neys of brown sandy clay. The kid neys constitute d considerable part Of some of the ore-in many cases they are thinly scattered through the sandstone. It seems to be generally accepted among the operators that the kidneys are rich in vanadium.
 Origin of the Deposits.
 It is difficult to foim definite opinion as to the origin of the car nctite and vanadium deposits. lille trand and Ransome show that the ores must have been carried to their present position and that the Vanad- ium and uranium compounds could rot have been the original cement ing material of the quartz grains, lut in all probability locally replaced the cacite that forms the matrix o1 the ordinary light colored sandstones iE which the ores occur. They eX- Iress the opinion that the carnotite rc suited from local concentration of material already in the sandstone, ti arr1n to was under conditions determined by proximity to the surface and prob | ably was partly dependent on a 1 semi arid climate.
 1 Hillebrand has shown that in small amounts vanadum is widely dis l tributed in sandstones. limestones i and igneous rocks. Occasionally the proportion of vanadium in d sand stone is such that the material may be worked commercially at profit. In the notwithstanding sandstone deposits around Newmire. Colo, the ore mined contains on an average 1h per cent vanadium and in places as much as 212 per cent. In the 1 newly discovered silver and vanad- | i,im bearing sandstone in Eagle county. Colo, some of the ore con- 1 tains 21s per cent vanadium. It is therefore not difficult to state a pos sible origin of the vanadium that has heen concentrated in the carnotite | deposits Almost invariably vanad- ium minerals are associated with the carnotite
 The carnotite ores are -fca, | importance, especially on account ol l their uranium and radium content Carnotite which contains both uran- ium and vanadum. is a yellow crys- talline pulverulent material. with a l specific gravity of 4.136. It occurs in white sandstone as an incrusta tion on the faces of joints and frac- lures ard is deposited around and between the individual grains of the sandstone. often strongly adhering tc the even surface of a grain. Tho size of these grains varies greatly b,t is generally from little les: tan 0.1 to 02 mm in diameter.
 Uses o. Uranium.
 Uranium salts have been used fol many years in glass manufacturing Uranium colors glass yellow and il sufficient proportion imparts to glas. s beautiful fluorescent color knowi as "opalescent"
 Fifteen per cent or more of th' oxide may be required to give thu desired effect. It is also used iT ceramics for the purpose of obtain ing brilliant fire proof tints of vel
 low. orange and black. Uranium
 Cclorirg powders may be obtained il
 black or in six shades of yellow 1 Uranium can be used as an allo.
 O. steel, but alloys of other metal
 that have similar properties can b
 produced more cheaply. Owing to tn
 increased supply of uranium, how
 ever, experiments are once more be
 ing tried. with the object of gettin; some alloy with properties of sui
 ficiently distinctive character t;
 make it q commercial product.