‡Ref.: Gilluly, James (1941) Thrust faulting in the Dragoon Mountains, Arizona [abs.]: Geological Society of America Bulletin: 52: 1949.
Cederstrom, D.J. (1946a) Geology of the central Dragoon Mountains, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 93 p.
Cederstrom, D.J. (1946b) The structural geology of the Dragoon Mountains, Arizona: American Journal of Science: 244(9): 601-621, 1 sheet, scale 1:31,680.
Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, AZ Bur. Mines Bull. 158: 10-29 (Chapter 2).
Cooper, J.R. (1959) Some geologic features of the Dragoon quadrangle, Arizona, in Heindl, L.A., ed., Southern Arizona Guidebook II, combined with the 2nd annual Arizona Geological Society Digest: Arizona Geological Society, p. 139-145.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 43.
Cooper, J.R., and Silver, L.T. (1964) Geology and ore deposits of the Dragoon quadrangle, Cochise County, Arizona: U.S. Geological Survey Professional Paper 416, 196 p., 13 sheets, scales 1:600, 1:1,200, 1:2,400, 1:4,800, 1:12,000, 1:31,680, 1:125,000.
Micklin, R.F. (1969) Fusulinds and conodonts of a Pennsylvanian-Permian section in the northern Dragoon Mountains, Cochise County, Arizona: Tucson, University of Arizona, M.S. thesis, 257 p.
Keith, Stanton B., and Barrett, L.F. (1976) Tectonics of the central Dragoon Mountains: A new look, in Wilt, J.C., and Jenney, J.P., eds., Tectonic digest: Arizona Geological Society Digest: 10: 169-204, 1 sheet, scale 1:24,000.
Rushing, J.A. (1978) Contact metamorphism and metasomatism of Paleozoic rocks near Stronghold Canyon, Dragoon Mountain, Arizona: Tucson, University of Arizona, M.S. thesis, 96 p.
Drewes, H.D., and Meyer, G.A. (1983) Geologic map of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-A, 1 sheet, scale 1:50,000.
Drewes, H.D., Watts, K.C., Jr., and Klein, D.P. (1983) Mineral resource potential map of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-B, 8 p., 1 sheet, scale 1:50,000.
Klein, D.P. (1983) Geophysical maps of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-C, 1 sheet, scale 1:50,000.
Baer, M.J., and Klein, D.P. (1984) Audio-magnetotelluric data in the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Open-File Report 84-0417, 60 p.
Drewes, H.D. (1984) Reconnaissance geochemical maps of mineralized rocks in the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-D, 1 sheet, scale 1:50,000.
Drewes, H.D., and Kreidler, T.J. (1984) Dragoon Mountains Roadless Area, Arizona, in Marsh, S.P., and others, eds., Wilderness mineral potential - Assessment of mineral resource potential in U.S. Forest Service lands studied 1964-84, v. 1: U.S. Geological Survey Professional Paper 1300, p. 58-61.
Kreidler, T.J. (1984) Mine and prospect map of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-F, 1 sheet, scale 1:50,000.
Watts, K.C., Erickson, M.S., Day, G.W., and Hassemer, J.R. (1984) Statistical analysis, and listing of spectrographic analyses of alluvial heavy-mineral concentrates and sieved stream-sediment samples, Dragoon Mountains Roadless Area and contiguous areas, Cochise County, Arizona: U.S. Geological Survey Open-File Report 84-0013, 41 p., 1 sheet, scale 1:125,000.
Watts, K.C., Hassemer, J.R., Erickson, M.S., and Drewes, Harald (1984) Geochemical and mineralogic maps of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-E, 2 sheets, scale 1:50,000.
Drewes, H.D. (1987) Geologic map and cross sections of the Dragoon Mountains, southeastern Arizona [Turquoise Mtn., Black Diamond Peak, Pearce, Cochise Stronghold, Haberstock Hill, Knob Hill, Cochise, and Dragoon 7.5 min.]: U.S. Geological Survey Miscellaneous Investigations Series Map I-1662, 2 sheets, scale 1:24,000.
Spencer, J.E., Gehrels, G.E., Bedford, J. Hall, D., Long, K., Miller, L., and Tufts, R. (1993) Geologic maps as interpretive studies: An example from the Dragoon Mountains: Arizona Geology [Arizona Geological Survey]: 23(1): 1-2, 7.
Yale Peabody GNIS database.
The Dragoon Mountains are in central Cochise County, between the San Pedro and Sulphur Spring valleys.
The Dragoon Range trends northwesterly, with a length of approximately 26 miles and a width of 3 to 12 miles. Its crest rises 1,000 to 3,000 feet above the adjacent plains and attains a maximum altitude of 7,512 feet. Its slopes are characteristically steep, and the northern portion in the vicinity of Cochise Stronghold is extremely rugged.
Schist, probably of older Precambrian age, crops out immediately west of Courtland and also on the west slope in the vicinity of South Pass.
North of the schist area on the west side of the range is a small exposure of dark greenish porphyritic granite carrying numerous schist fragments.
Bolsa Quartzite of middle Cambrain age overlies the schist and granite in the central and northern portions of the range and at Courtland. Because of faulting, intrusion, and erosion, its maximum observed thickness of 325 feet does not represent its total.
Overlying the Bolsa quartzite is the Upper Cambrian Abrigo Limestone which, on the southwest side of the range has an exposed thickness of approximately 400 feet. In places about 50 feet of yellow and red sandy shale, possibly equivalent to the Cochise formation, separates the Abrigo from the Bolsa.
Above the Abrigo is Devonian Martin limestone which has been recognized chiefly in the southwestern part of the area. There it has a maximum thickness of 355 feet.
The Mississippian Escabrosa Limestone is characterized by medium- to massive beds which, if metamorphosed, tend to form crystalline, relatively pure marble. It shows a thickness of 300 feet in the southwestern art of the range and occurs prominently in the Courtland area.
Pennsylvanian Naco Limestone constitutes part of the Gleeson Ridge, and naco Limestone of Snyder Hill (Permian) aspect is widespread in the main range. These limestones are medium- to thin-bedded, the Pennsylvanian is somewhat cherty, and the Permian is locally impure.
A series from 1,000 to possibly 3,000 feet thick, of shale, sandstone, and basal conglomerate unconformably overlies the Paleozoic rocks, chiefly in the middle segment of the range and north of Courtland. It has been correlated tentatively with the Lower Cretaceous (Comanchean) Bisbee group.
Intruding the Cretaceous and older rocks is the Stronghold granite which occupies an area of more than 50 square miles in the northern portion of the range and extends as irregular masses and great dikes into the older formations. In the southern third of the area, granitic rocks also make up large areas. At Courtland and Gleeson, they include quartz monzonite, quartz-monzonite porphyry, and granite, all of post-Paleozoic age. Dikes of aplite, rhyolite porphyry, felsite, and diabase are common locally.
Mineral ListMineral list contains entries from the region specified including sub-localities
148 entries listed. 120 valid minerals.
Localities in this Region
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
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Locality Updated: Freixo de Espada à Cinta, Bragança District, PortugalFrom Rui Nunes, 12th Mar 2014 15:03:11