Campbell Mine (Campbell shaft), Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA

‡Ref.: Triscka,, C., et al (1929), Boxwork siderite, Economic Geology: 24: 677-686.

Hewett, D.F. & O.N. Rove (1930), Occurrence and relations of alabandite, Economic Geology: 25: 36-56.

Schwartz, G.M. & C.F. Park, Jr. (1932), A microscopic study of ores from Campbell mine, Bisbee, Arizona, Economic Geology: 27: 39-51.

Schwartz, G.M. (1934), Paragenesis of the oxidized ores of copper, Economic Geology: 29: 55-75.

Trischka, C. (1938), Bisbee district, in Some Arizona ore deposits, Arizona Bureau of Mines Bull. 145: 37.

Schwartz, G.M. (1939), Significance of bornite-chalcocite microtextures, Economic Geology: 34: 399-418.

Yagoda, H. (1945), The localiztion of copper and silver sulfide minerals in polished sections by the potassium cyanide etch pattern, American Mineralogist: 30: 51-64.

Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 17, 18.

Wilson, E.D., et al (1950), Arizona zinc and lead deposits, part I, Arizona Bureau of Mines Bull. 156: 27-28.

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Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 7.

Arizona Bureau of Mines files.

MRDS database Dep. ID file #10104069, MRDS ID #M241089; and, Dep. ID #10112956, MAS ID #0040030586.

A former large-output underground Cu-Pb-Zn-Ag-Au-Mn-Bi-In-Sn mine located in the center of SW¼SE ¼ sec. 15, T.23S., R.24E. (Bisbee 7.5 minute topo map), 1.5 miles NE of Mount Reilly, on private land. Owned at times, or in part, by the Calumet & Arizona Mining Co. and the Phelps Dodge Corp.

Mineralization is the Campbell orebody of largely oxidized copper, with minor lead and zinc, mineralization in irregular replacement orebodies in Cambrian Abrigo, Devonian Martin and Mississippian Escabrosa Limestones in close association with porphyry dikes and sills. The ore body is 213.36 meters long, 152.4 meters wide, depth to top is 396.24 meters, depth to bottom is 701.04 meters, it is 76.2 meters thick, strikes NW and dips NE. The orebody, as developed on the 1600, 1700 and 1800 levels averages about 500 feet in length and varies in width from 50 to 250 feet. The footwall contact is fairly well defined, with the exception of fracture zones which have caused some displacement. The dip shows a marked variation from nearly 90º to as flat as 25º. Above the 1700 level the fotwall roughly conforms to the normal dip of the limestone beds of the district. The hanging wall is subject to a greater degree of variation than the footwall and changes from an economic silica-pyrite contact of low copper content to a sharply defined hanging wall conforming to the local bedding planes.

Besides the main lens there are several minor orebodies having a smaller area and vertical extent. On the upper levels the orebodies are separated by limestone, but on the lower levels the limestone has been largely replaced by pyrite, and the orebodies are arranged around the periphery of a mass of pyrite.

The footwall zone passes outwardly from the sulphide copper ore through bunches of cpper ore mixed with lead-zinc sulphides into hematite and recrystallized limestone and finally into unaltered limestone.

At the north end of the orebody an oxidized zone extends from about 50 feet above the 1600 level to the 2000 level, with the greatest extent of this zone between the 1600 and 1800 levels. In this area cuprite, malachite, and native copper are intimately associated with the sulphides. There is also scattered oxidation along fractures in the main orebody.

Considered as a whole, the orebody of the Campbell area is composed mainly of chalcopyrite, with important masses of bornite and chalcocite. Near the borders of the ore sphalerite and galena become increasingly abundant. As these in turn decrease, specular hematite becomes prominent to te almost complete exclusion of the sulphides.

Local structures include common pre-mineralization faulting and tilting. The main fault directions are N10W to N40E, S30W to N50W, pre-mineralization.

Workings include a deep shaft. Probably produced several hundred thousand tons of ore; included in Calumet & Arizona and Phelps Dodge Corp totals.