Bisbee daily review., 1902-06-29
THE MINING FIELD.
Copper Deposits in Ar,zona

Copper Deposits in Ar,zona
 Horace J. Stevens, in his Copper Hand Book. has this to say about the deposits of copper in Arizona:
 Arizona is now one of the worlds copper supply; no district has shown such rapid growth for the past few years, or promises greater growth in the next decade, and Arizona is rap idly overhauling Michigan and Mon tana as a producer of copper. As transportation facilities are increased and the country is opened the devel- opment of new mines of importance Eis certain, given favorable conditions - in the metal mearket.
 It should be borne in mind, how ever, that no copper district has more poor mines than Arizona. This is not said as reflection upon the good mines, or. to damage the reputation of the territory, but many of the deposits of the. territory, but, just as all is not gold that glitters, so all that is cop per in Arizona is not necessarily 3 copper mine. There is copper almost everywhere in the territory, but many of the deposits are of small extent and consequently of little or no value. The climatic conditions, the lack or water at many points, the scarcity CT fuel and mountainous formation rend- CT the development of copper mine expensive work in all but the most fayorably located districts. As the country progresses industrially. the work of propescting. mining and smelt- ing is followed under less discourag- ing circumstances.
 The disance of Arizona from the east is frequently used by designing parties to foist worthless mining shares upon eastern investors. This in no wise detracts from the value Ot the good mines, but Arizona mining propositions should be carefully inves- tigated by intending purchasers or shares. There are many nsritoriops mines of copper in the territory, but an even larger number Of smaller merit. or none at all, and. of course, the honestly managed prperties suffer to a great extent from the sins of corporations fpated mainly to sell stock to the credulous.
 Arizona is a country of magnificent distances. and its principal districts are far apart, even as the crows fly. and much farther as the railroad run. The principal fields are the Clifton, Jerome, Globe, and Bisbee districts, with a fifth, the Helvetia or Tucson, south of the territorial capital
 In the Jerome dlstrict, now the principal producer, the country rock is slate. Carbonate and oxides ores near surface are followed by oxysul- in hx- o l. phidess The great United Verde, one of the worlds richest mines. is loca- tedsa at Jerome.
 In the Bisbee district the country rock is a carboniferous limestone. The Copper Queen is the principal mine. Among the newer mines ot importance in the Bisbee camp is the Calumet & Arizona. which now promises wonder fully we'll The oxide ores at surface are succeeded by very rich carbonates extending to unusual depths and these in turn are followed by the sul- phides.
 The geological formation of the Cliff ton district is much the same as in the Bisbee camp The Detroit and Ari- Zona mines are the principal proper ties This is the oldest copper mining district of the territory, and the Long fellow mine, now part of the con- solidated properties of the Arizona Copper company. is the oldest mine in Arizona. The Arizona Copper com- pany operates at Clifton, and the De troit at Morenci, not far distant
 The Globe district has calcareous country rock. Oxydized ores predom- mate for some depth. but the sulphide ores have recently been opened in the lower levels. The copper cres of this district carry an undue amount of silica and give more trouble ir smelling than the ores of other Ari- zona districts. sfI Ia
 The Tucson, or Helvetia district. mas never been developed to the same extent ass the other copper r fields. though copper has been found at many points within a radius of 30 miles of Tucson. The Helvetia is the most i'm portant mine of the district.
 There are also copper developments near Wickenburg and at a number of other points in Arizona.
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