Arizona republican., 1905-01-09
SHAPE OF ARIZONA
Geologic Studies in the
 SOuth-WeSt
Two FOliOs Put Out by the Survey Descriptive of the Globe and Bisbee QUadrangles.

Washington. Jan. S-The United State geological survey Has recently published two geologic folios that will interest the mining men of the south west. They are descriptive of the Globe and Bisbee quadrangles in Ari- zona and are the first folios relating to this territory to appear. Both of the areas are preeminently distinguished for their production of copper ores.
 THE GLOBE QUADRANGLE.
 The area embraced within the Globe quadrangle contains about 249 square miles. It is situated in the southeast central part of. the territory of Arizona. between Gila river on the south and Salt river on the north, and includes portions of Gila and PinaI counties. The town of Globe, a village of 1900 inhabitants, which gives its name to the quadrangle. lies in the heart of. the mountain region of Arizona.
 The topography and geology of tke quadrangle are described by MT. Fred erick Leslie RansOme, the author of the folio, but the most interesting part of this text to most people will be the chapter on the economic geology of the district. After giving an account oG the history of mining development in this area. the author discusses in de- tail the classification, distribution. mineralogy, occurrence, genesis and age of the ores and makes brief men ton also of the only non-metaliiferous deposits, limestone and building stone found in this quadrangle.
 The most important ore bodies thus far found in the Globe quadrangle oc- cur in the Globe hills just north of Globe. The copper ores. which have given the district it's later prominence. are found in the southern part of these hills. within a radius of three or four miles from Globe, principally in the properties owned by the Old Dominion and United Globe companies, while the silver ores, which first attracted at tention to the region, were formerly mined m the northern portion of the hills and the adjoining quadrangles to the north and east.
 Tn this district the production of cop per far exceeds in importance the pro- duction of any other metal. More than three fourths of the whole out put has come from a single mine the old Dominion, which was formerly known as the Globe. It is estimated that tIe total product of the quad rangle amounts. in round numbers, to 12O. .000 GOO pounds
 THE BISBEE QUADRANGLE.
 The Bisbee quadrangle is in Cochise county in the southeastern part of Arizona. It embraces an area of about 1SO square miles, and includes the half of the Mule Noun tains. one of the smaller of the isolated ranges characteristic of the mountain region of Arizona. The town of Bisbee, which has an estimated population of is- lad int a faxx row. continent ravipes near the heart of the range. seven and half miles north of the international boundary.
 After describing the topography and general geology of the quadrangle, MT. TausOme gives a brief account of the ore deposits. The limits of folio text do not permit detailed discussion of the economic geology of the quadran- gle and readers interested in the Bis bee ore deposits are accordingly re- ferred to Mir. Ransome's report on that subject, which the survey has already published as Professional Paper No. 21.
 It uay be noted here that the Bis bee quadrangle contains two large productive copper mines-the Copper Queen and the Calumet and Arizona. Other newly developed mines which some copper ore are the Low ell and the Cole Sna1t or the Lake Superior and Pittsburg company The Calumet and Pittsburg, the Bisbee West mine and the Glance mine are active prospects which up to the close ! of the year 1902 had not found ore in paying quantities. It is estimated that -he total output of the Bisbee quad 1. -angle to the close of 1902, amounted / 70 3S0,O47. .21O pounds of copper
 Brief descriptions are given by MT !: Ransome of the lead deposits in Hen , trick Gulch and of the Easter Sun i lay mine, which, though small is in [ eresting as the only producer of gold l ore in the quadrangle. Non-metalli- | erous deposits such as clay, silica, | md building stone are also mentioned. ,
 Both folios are well illustrated with | and geologic maps; struc- ure and columnar sections. diagrams md reproductions of photographs. They may be obtained for the sum of i twenty-five cents each, on application O the director of the United States survey, Washington, D. C.