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Irish Mag Mine (Calumet and Arizona Mine), Calumet and Arizona group of claims (Calumet and Arizona Mining Company group of claims), Ramsey Canyon, Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA

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Latitude & Longitude (WGS84): 31° 25' 53'' North , 109° 54' 33'' West
Latitude & Longitude (decimal): 31.4313888889, -109.909166667


A former large output underground Cu-Pb-Zn-Au-Ag occurrence/mine located in the center of sec. 16, T23S, R24E, in upper Ramsey Canyon, where Pat Scott and Wisconsin Canyon enter Ramsey Canyon, on private land. Produced 1902-1950. Owned at times, or in part, by the Lake Superior & Western Development Co., Calumet & Arizona Mining Co., and the Phelps Dodge Corp. This was the first Calumet & Arizona mine. Other operators included the Butte & Arizona Mining Co. and the Coronado Investment Co.

Mineralization is partly oxidized copper and minor lead-zinc ores in irregular replacement bodies associated with strong fracturing and faulting in relatively unaltered Devonian Martin and Cambrian Abrigo Limestones. Ore control was dikes and sills near the ore bodies and faulting and associated brecciation. Ore concentration was bornite replacing pyrite. Alteration was gossan with Mn and Fe oxides induced by hydrothermal metamorphism. An associated rock unit is the Sacramento Hill Stock.

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

Workings include a shaft(s), a 200 foot tunnel driven in the early 1900'S. Three principal adits, including this tunnel, pits, and small prospect drifts.

This was the first Calumet & Arizona mine with over 1.5 million tons of ore produced since 1902.

Mineral List


10 valid minerals.

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.

References

Ransome, F.L. (1904a), The geology and ore deposits of the Bisbee quadrangle, Arizona: U.S. Geological Survey Professional Paper 21, 168 p., 3 sheets, scales 1:12,000 and 1:62,500: 111-112.

Bonillas, Y.S., Tenny, and Feuchere (1917), Geology of the Warren mining district: A.I.M.E. Transactions, Vol. 55: 284-355: 329.

Weber, R.H. (1950), The Geology of the East-central Portion of the Huachuca Mountains, Arizona, University of Arizona, PhD. Thesis.

Bryant, D.G. & R.A. Metz (1966), Geology and ore deposits of the Warren mining district, in Titley, S.R. and Hicks, C.L., eds., Geology of the porphyry copper deposits, southwestern North America: 189-203, University of Arizona Press: 191, 200-201.

Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, Arizona: 88 (Table 4).

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 228.

U.S. Bureau of Mines (1995), Minerals Availability System/Mineral Industry Location System (MAS/MILS): file #0040030633.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10046239, MRDS ID #M241104; #10088888, MRDS ID #M800316; and #10209783.

U.S. Bureau of Mines - Arizona Bureau of Geology and Mineral Technology file data.

Mineral and/or Locality  
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