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Bagdad Mine (Bagdad Copper Corp. Mine; Cyprus Bagdad Copper Co. Mine), Bagdad, Eureka District, Yavapai Co., Arizona, USA

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‡Ref.: Lindgren, W. (1926), Ore deposits of the Jerome and Bradshaw Mountains quadrangle, Arizona, USGS Bull. 782.

Hurlbut, C.S., Jr. (1936), A new phosphate, bermanite, occurring with triplite in Arizona, American Mineralogist: 21: 656-661.

Butler, B.S. & Wilson E.D. (1938), Some Arizona Ore Deposits, Clifton-Morenci District, Arizona Bureau of Mines Bull. 145: 98.

Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 16, 18, 20, 25.

Schwartz, G.M. (1947), Hydrothermal alteration in the 'porphyry copper' deposits, Economic Geology: 42: 319-352.

Anderson, C.A. (1950), Alteration and metallization in the Bagdad porphyry copper deposit, Arizona, Economic Geology: 45: 609-628.

Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 47-49, 81-83.

Bagdad Mine Story. Arizona Department of Mineral Resources (1957) April, 1957, 7 pp. (unpublished).

Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 33, 57, 70, 87.

Dale, V.B. (1961), Tungsten deposits of Gila, Yavapai, and Mohave Counties, Arizona, U.S. Bureau of Mines Information Circular 8078.

Moxham, R.M., et al (1965), Gamma-ray spectrometer studies of hydrothermally altered rocks, Economic Geology: 60: 653-671.

Apland, Ken (1978) Cyprus Bagdad Copper Company 1970-1977. Historic Highlights. Arizona A.I.M.E. Spring Meeting, Bagdad, Arizona, April, 1978. 5 pp.

Medhi, P.K. (1978) Recent geological developments at the Bagdad porphyry copper deposits, Eureka mining district, Yavapai County, Arizona [abs.], in Jenney, J.P., and Hauck, H.R., eds., Proceedings of the Porphyry Copper Symposium, Tucson, Arizona, March 18-20, 1976: Arizona Geological Society Digest, v. 11, p. 79.

Blair, Gerry (1992), The Rockhound's Guide to Arizona: Helena, MT, Falcon Press.

Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department Mines & Mineral Resources Open File Rept. 92-10: 16 (Table 1).

Sawyer, M.B., Gurmendi, A.C., Daley, M.R., and Howell, S.B. (1992) Principal Deposits of Strategic and Critical Minerals in Arizona, U.S. Bureau of Mines Special Publication, 334 pp.

Arizona Department of Mines & Mineral Resources, 1994, Directory of Active Mines in Arizona, Incorporating Sand and Gravel Operations - 1994: Arizona Department of Mines and Mineral Resources Directory 42, 24pp.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 129, 154, 164, 186, 191, 224, 229, 302, 316.

Singer, D.A., Berger, V.I., and Moring, B.C. (2008): Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. US Geological Survey Open-File Report 2008-1155.

U.S. Bureau of Land Management State Office Aquarius Planning Unit Step 3.

U.S. Bureau of Land Management Arizona Mining Claims Lead Files #38688, 19355, 22771 and 31840.

USGS Bagdad Quadrangle map.

Arizona Department of Mineral Resources Cyprus Bagdad Copper Co. active file.

MRDS database Dep. ID #10027594, MRDS ID #M003467; and Dep. ID #10162326, MAS ID #0040250001 (many more references on the mine and mill); and, Dep. ID #10283234, MAS ID #0040250624.

A former surface and underground Cu-Ag-Au-Pb-Zn-Mo-Ti-Rhodium mine located in the center of sec. 4, T.14N., R.9W. (Bagdad 15 minute topo map), on 8 claims on Copper Creek. Owned by the Bagdad Copper Corp. Discovered 1882. First produced 1906. Claims also in sections 5, 9 & 10, T14N, R9W; and, in sections 6 & 7, T14N, R9W; and, in sections 1, 10-14, T14N, R10W; and, sections 34-36, T15N, R10W.

Mineralization is 'porphyry copper' deposit with a blanket orebody hosted in the Brindle Formation. Ore control, where the largest quantity and highest grade ore occurs, is where intersecting or closely spaced faults have increased permeability. Mineralized fractures have attitudes (from most to least common) of N70E, 70N; N20E, 75W; N40W, 90. Ore concentration was hypogene metallization and supergene enrichment to copper ores, oxidation. Alteration included sericitization and argillization.

Area structures include the fracturing of the stock at Bagdad, important to this porphyry deposit, appears to be the result of the intersection of dike swarms.

Workings included a 465 foot deep, 3-compartment shaft. Production to 1951 was 125,991,174 pounds of Cu plus 85 oz. Au and 292,969 oz. Ag, and 85, 826 pounds of Mo.





 Map Reference: 34°35'0"N , 113°12'23"W

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.



Mineral List:
  		•  'Adularia'
    KAlSi
     
    3
    		O
     
    8
    Description: Common hypogene mineral associated with quartz in altered quartz monzonite and in veins.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 48.]
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.]
  		•  Apatite-(CaF)
    var: Carbonate-rich Apatite-(CaF)
    Ca
     
    5
    		[(F,O)|(PO
     
    4
    		,CO
     
    3
    		)
     
    3
    		]
    Habit: Hexagonal plates
    Colour: Cream-colored
    Description: On the surface over the mine deposit; also in leached sulfide zone in limonite boxworks; crystals on chalcedony.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 154; Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 51; Anderson, C.A. (1950), Alteration and metallization in the Bagdad porphyry copper deposit, AZ, Econ.Geol.: 45: 609-628.]
  		•  Azurite
    Cu
     
    3
    		[OH|CO
     
    3
    		]
     
    2
    Reference: [MRDS database Dep. ID #10162326, MAS ID #0040250001.]
  		•  Baryte
    BaSO
     
    4
    Habit: Small, platy
    Colour: Bluish-white, cream-colored
    Description: Occurs in small pockets in fractured quartz monzonite (blue-white); in veins carrying galena and sphalerite (cream-colored).
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 129; Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 48; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 57; Anderson, C.A. (1950), Alteration and metallization in the Bagdad porphyry copper deposit, AZ, Econ.Geol.: 45: 609-628.]
  		•  Biotite
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 48.]
  		•  Bismite
    Bi
     
    2
    		O
     
    3
    Reference: [Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 33.]
  		•  Bornite
    Cu
     
    5
    		FeS
     
    4
    Reference: [Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.]
  		•  Chalcanthite
    CuSO
     
    4
    		·5H
     
    2
    		O
    Reference: [Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.]
  		•  'Chalcedony'
    Description: Small quantities in oxidized part of the deposit as thin veinlets with or without chrysocolla.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 154; Anderson, C.A. (1950), Alteration and metallization in the Bagdad porphyry copper deposit, AZ, Econ.Geol.: 45: 609-628; Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 51.]
  		•  Chalcocite
    Cu
     
    2
    		S
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 164; Schwartz, G.M. (1947), Hydrothermal alteration in the 'porphyry copper' deposits, Econ.Geol.: 42: 319-352; Anderson, C.A. (1950), Alteration and metallization in the Bagdad porphyry copper deposit, AZ, Econ.Geol.: 45: 609-628; Moxham, R.M., et al (1965), Gamma-ray spectrometer studies of hydrothermally altered rocks, Econ.Geol.: 60: 653-671.]
  		•  Chalcopyrite
    CuFeS
     
    2
    Description: Occurs as small grains, either in veinlets or disseminated and always associated with pyrite.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 47; Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. of Mines Bull. 153: 20.]
  		•  'Chlorite Group'
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 48.]
  		•  Chrysocolla
    (Cu,Al)
     
    2
    		H
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    		·nH
     
    2
    		O
    Colour: Bluish-white, greenish-blue to blue
    Description: Coatings on rock in oxidized zone; in bands alternating with lesser amounts of malachite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 316; Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 49, 51.]
  		•  Conichalcite
    CaCu[OH|AsO
     
    4
    		]
    Description: Occurs lining vugs.
    Reference: [Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 70.]
  		•  Copper
    Cu
    Description: Fairly common in small, irregular masses and wires associated with cuprite.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 49.]
  		•  Covellite
    CuS
    Description: Supergene replacement mineral after chalcopyrite in microscopic sized particles in ore.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 191; Anderson, C.A. (1950), Alteration and metallization in the Bagdad porphyry copper deposit, AZ, Econ.Geol.: 45: 609-628; Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 49.]
  		•  Cuprite
    Cu
     
    2
    		O
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 49.]
  		•  Cuprite
    var: Chalcotrichite
    Cu
     
    2
    		O
    Description: Occurs locally in addition to massive cuprite.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 49.]
    Site Photo
    Bagdad Mine (Bagdad Copper Corp. Mine; Cyprus Bagdad Copper Co. Mine), Bagdad, Eureka District, Yavapai Co., Arizona, USA
    © Ben Kirchner
  		•  Enargite
    Cu
     
    3
    		AsS
     
    4
    Reference: [Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.]
  		•  'Feldspar Group'
    Reference: [MRDS database Dep. ID #10027594, MRDS ID #M003467.]
  		•  Fluorite
    CaF
     
    2
    Description: In small pockets in pegmatite with triplite & a green mica.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 224; Hurlbut, C.S., Jr. (1936), A new phosphate, bermanite, occurring with triplite in AZ, Am.Min.: 21: 656-661.]
  		•  Galena
    PbS
    Description: Coarse crystals rare in quartz veins.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 229; Dale, V.B. (1961), Tungsten deposits of Gila, Yavapai, and Mohave Cos., AZ, US Bur. of Mines Inf. Circ. 8078; Anderson, C.A. (1950), Alteration and metallization in the Bagdad porphyry copper deposit, AZ, Econ.Geol.: 45: 609-628; Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 47.]
  		•  Gold
    Au
    Reference: [MRDS database Dep. ID #10027594, MRDS ID #M003467.]
  		•  Gypsum
    Ca[SO
     
    4
    		] · 2H
     
    2
    		O
    Description: In older workings as efflorescent coatings 1 inch (2.5 cm) or more thick.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 51.]
  		•  Jarosite
    KFe
    3+
     
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Colour: Orange
    Description: Particularly common in the oxidized part of the primary sulfide zone; crystal aggregates of dense orange material in one of the stronger quartz veins pseudomorphic after original crystal forms of the original pyrite.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 51.]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Colour: Greenish to yellow-brown
    Description: An identified component of clay aggregates and films along fractures and faults above the primary sulfide zone.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 51.]
  		•  Limonite
    FeO(OH)·nH
     
    2
    		O
    Colour: Maroon
    Description: Oxidized part of the primary sulfide zone. Maroon material containing 1% Cu over the chalcocite zone and derived from it.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 51.]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Habit: Small crystals
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 48.]
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Description: Common in oxidized zone.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 49.]
    Site Photo
    Bagdad Mine (Bagdad Copper Corp. Mine; Cyprus Bagdad Copper Co. Mine), Bagdad, Eureka District, Yavapai Co., Arizona, USA
    © Rob Lavinsky
  		•  Molybdenite
    MoS
     
    2
    Description: In thin quartz-pyrite veins. Minute flakes to large grains ¼ inch diameter.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 302; Dale, V.B. (1961), Tungsten deposits of Gila, Yavapai, and Mohave Cos., AZ, US Bur. of Mines Inf. Circ. 8078; Anderson, C.A. (1950), Alteration and metallization in the Bagdad porphyry copper deposit, AZ, Econ.Geol.: 45: 609-628; Schwartz, G.M. (1947), Hydrothermal alteration in the 'porphyry copper' deposits, Econ.Geol.: 42: 319-352; Lindgren, W. (1926), Ore deposits of the Jerome and Bradshaw Mountains quadrangle, AZ, USGS Bull. 782; Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 47; Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. of Mines Bull. 153: 25.]
  		•  Montmorillonite
    (Na,Ca)
     
    0.33
    		(Al,Mg)
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Reference: [Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [MRDS database Dep. ID #10027594, MRDS ID #M003467.]
  		•  Olivenite
    Cu
     
    2
    		[OH|AsO
     
    4
    		]
    Habit: Micro-crystals.
    Description: Micro-crystals on chrysocolla.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 316.]
  		•  Opal
    SiO
     
    2
    		·nH
     
    2
    		O
    Description: Occurs in quartz veins.
    Reference: [Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 87.]
  		•  Pyrite
    FeS
     
    2
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 47.]
  		•  Rutile
    TiO
     
    2
    Habit: Needles; stubby
    Description: Microscopic crystals in altered quartz monzonite as needles in the biotite and chloritized biotite and as stubby crystals and granular aggregates attached to the biotite or mixed with quartz & adularia.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 48.]
  		•  Saponite ?
    Ca
     
    0.25
    		(Mg,Fe)
     
    3
    		(Si,Al)
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Colour: Greenish to yellow-brown
    Description: An tentatively identified component of clay aggregates and films along fractures and faults above the primary sulfide zone (montmorillonite-saponite group ?).
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 51.]
  		•  Scheelite
    Ca[WO
     
    4
    		]
    Description: A few crystals found on dump using UV.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 48.]
  		•  'Sericite'
    Reference: [Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.]
  		•  Silver
    Ag
    Reference: [MRDS database Dep. ID #10027594, MRDS ID #M003467.]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Description: Rare occurrences in quartz-pyrite veins with galena.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 47.]
  		•  Tetrahedrite
    (Cu,Fe,Ag,Zn)
     
    12
    		Sb
     
    4
    		S
     
    13
    Description: Coarse crystals with galena in a quartz vein.
    Reference: [Anderson, C.A., et al (1955), Geology and ore deposits of the Bagdad area, Yavapai County, Arizona, USGS PP 278: 47.]
  		•  Triplite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)
     
    2
    		[(F,OH)|PO
     
    4
    		]
    Description: In small pockets in pegmatite with fluorite & a green mica.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 224; Hurlbut, C.S., Jr. (1936), A new phosphate, bermanite, occurring with triplite in AZ, Am.Min.: 21: 656-661.]


    44 entries listed. 35 valid minerals.

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in Arizona, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 28th Nov 2009 03:58:43