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Orphan Mine (Orphan lode; Orphan N.P. 2004; Golden Crown Mining Co. property; Western Gold and Uranium property), Grand Canyon Village, Orphan District, South Rim, Grand Canyon National Park, Coconino Co., Arizona, USA

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‡Ref.: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 127, 162, 285, 298, 340, 351, 371, 407, 408, 409; Isachsen, Y.T., et al (1955), Age and sedimentary environments of uranium host rocks, Colorado Plateau, Econ.Geol.: 50: 127-134; Gornitz, V. (1986), Uranium mineralization at the Orphan mine breccia pipe, Grand Canyon, AZ (abs.), Geol. Soc. Amer. Abs. with Progs.: 18: 357; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5; Gornitz, V. & P.F. Kerr (1970), Uranium mineralization and alteration, Orphan Mine, Grand Canyon, AZ, Econ.Geol.: 65: 751-768; Gornitz, V., et al (1988), Origin of the Orphan Mine breccia pipe uranium deposit, Grand Canyon, AZ, Process Mineralogy VII: Applications to Mineral Benficiation Technology and Mineral Exploration, A.H. Vassiliou, Hausen, D.M., and Carson, D.J.T., editors, The Metallurgical Society, Warrendale, PA: 281-301; Wenrich, K.J., et al (1989), Uranium in AZ, in: Geologic evolution of Arizona, J.P. Penney and S.J. Reynolds, editors, AZ Geol. Soc. Digest 17, Tucson: 759-794; Wenrich, K.J., et al (1992), USGS Bull. 1683-D: D2; Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12; Chenoweth, W.L. (1986), The Orphan Lode mine, Grand Canyon, AZ, a case history of a mineralized collapse-breccia pipe, USGS Open File Rept 86-510; Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, AZ Dept. Mines & Min. Resources Open File Rept. 92-10: 6 (Table 1); Keith (1970) AZ Bur. Mines Bull. 182: 103-159, 202-289; Kofford (1969), Four Corners Geol. Soc. Guidebook: 190-194; Bowles (1977), USGS Circ. 753: 25-27; US Bur. Land Management Mining District sheet 62; US Atomic Energy Comm. Prelim. Rpt. 172-479: 2, 8, 9; AZ Dept. Min. Resources Orphan Mine file; Adler, H., EconGeol.: 58(6): 849-850.

A former underground U-Cu mine with minor & trace commodities of Sb-Pb-Co-Au-Mn-Zn-Ag-Mo & baryte, located in the N½ sec. 14, T.31N., R.2E. (Bright Angel 15 minute topo map), 2 miles west of Grand Canyon Village on the South Rim of the canyon itself, immediately West of Maricopa Point. Discovered by Daniel L. Hogan in 1893 as a copper claim and dubbed the 'Orphan lode' by him. Converted to an uranium mine in 1956 and closed in 1969. Owned by Western Gold & Uranium, Inc.

Local rocks are Pennsylvanian and Permian. Mineralization involves an ellipsoidal, pipelike body of collapse breccia developed primarily in the Permian Coconino Sandstone (and Mescal limestone) associated with pyrite and other sulfides and sulfosalts of Cu-Pb-Zn-Co-Ni & Mo, and includes secondary copper minerals. Ore is disseminations and stringers on the pipe's periphery. Bleaching, argillization and carbonization extend into sediments as a function of permeablity. Concentration process was bacteriological mobilization and enrichment of deposits from hydrothermal fluids.Strongest mineralization in most permeable areas around the periphery of the pipe.

Workings include 3 small, original workings, including a main adit. The middle working has a main adit about 25 feet long and about 15 feet of workings branching off. The lower working adit is about 45 feet long, turns and goes an additional 25 feet. There is a 1,600 foot deep shaft and crosscut more than 800 feet long.

Production for the period 1956-1969 was 4,260,000 pounds of U3O8, plus 6,680,000 pounds of Cu, 107,000 oz. Ag and 3,400 pounds of V2O5.





 Map Reference: 36°4'N , 112°9'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:
  		•  'Albite-Anorthite Series'
    Reference: [MRDS database file No. 10027053.]
  		•  Alum-(K)
    KAl[SO
     
    4
    		]
     
    2
    		 · 12H
     
    2
    		O
    Reference: [Anatoly Kasatkin analyses]
  		•  Anglesite
    PbSO
     
    4
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Anhydrite
    CaSO
     
    4
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Ankerite
    Ca(Fe
    2+
     
    		 ,Mg,Mn
    2+
     
    		)(CO
     
    3
    		)
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Aragonite
    CaCO
     
    3
    Reference: [MRDS database file No. 10027053.]
  		•  Arsenopyrite
    FeAsS - (Fe
     
    0.90
    		Co
     
    0.10
    		)AsS
    Description: Occurs as impregnations in sandstone - lower adit.
    Reference: [Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Azurite
    Cu
     
    3
    		[OH|CO
     
    3
    		]
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 285; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Baryte
    BaSO
     
    4
    Habit: Coarse crystals
    Colour: Yellow
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 127, 298; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Bieberite
    CoSO
     
    4
    		·7H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Bornite
    Cu
     
    5
    		FeS
     
    4
    Description: Rimmed by chalcopyrite or with chalcopyrite grains oriented bladed along (100) bornite cleavages.
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5, 7.]
  		•  Brochantite
    Cu
     
    4
    		[(OH)
     
    6
    		|SO
     
    4
    		]
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Calcite
    CaCO
     
    3
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Carnotite
    K
     
    2
    		(UO
     
    2
    		)
     
    2
    		[VO
     
    4
    		]
     
    2
    		 · 3H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Cerussite
    PbCO
     
    3
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Chalcanthite
    CuSO
     
    4
    		·5H
     
    2
    		O
    Description: Occurs as efflorescences - lower adit.
    Reference: [Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12.]
  		•  'Chalcedony'
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Chalcocite
    Cu
     
    2
    		S
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 162; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5, 7..]
  		•  Chalcopyrite
    CuFeS
     
    2
    Description: Occurs as impregnations in sandstone - lower adit; also disseminated grains, oriented bladed along (100) bornite cleavages, and as rims around bornite.
    Reference: [Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5, 7..]
  		•  Chrysocolla
    (Cu,Al)
     
    2
    		H
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    		·nH
     
    2
    		O
    Reference: [Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12.]
  		•  Copper
    Cu
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Covellite
    CuS
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 5, 7.]
  		•  Digenite
    Cu
     
    9
    		S
     
    5
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5, 7.]
  		•  Dolomite
    CaMg(CO
     
    3
    		)
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Enargite
    Cu
     
    3
    		AsS
     
    4
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Erythrite
    Co
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Galena
    PbS
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Gersdorffite
    NiAsS
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Gypsum
    Ca[SO
     
    4
    		] · 2H
     
    2
    		O
    Description: On adit walls with efflorescent Fe & Cu minerals.
    Reference: [Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Halotrichite
    FeAl
     
    2
    		(SO
     
    4
    		)
     
    4
    		·22H
     
    2
    		O
    Reference: [Anatoly Kasatkin analyses]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Description: As impregnations in sandstone - lower adit.
    Reference: [Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Hexahydrite
    MgSO
     
    4
    		·6H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Illite
    K
     
    0.65
    		A
     
    2.0
    		 [][Al
     
    0.65
    		Si,
     
    3.35
    		O
     
    10
    		](OH)
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Ilsemannite
    Mo
     
    3
    		O
     
    8
    		·nH
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Jarosite
    KFe
    3+
     
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Laumontite
    CaAl
     
    2
    		Si
     
    4
    		O
     
    12
    		·4H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Limonite
    FeO(OH)·nH
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 285; Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Marcasite
    FeS
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Metatorbernite
    Cu(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Metazeunerite
    Cu(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Millerite
    NiS
    Description: Occurs in cavities in barite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 298; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Molybdenite
    MoS
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Nickeline
    NiAs
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Pararammelsbergite
    NiAs
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Pyrite
    FeS
     
    2
    Description: Associated with Cu-U-Pb ores in Coconino Sandstone. Most abundant sulfide mineral. Early stage = finely-disseminated, strongly-zoned cubes, with cores of bravoite and siegenite. Later stage of massive, often highly-fractured material.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 340; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5, 7; Isachsen, Y.T., et al (1955), Age and sedimentary environments of uranium host rocks, Colorado Plateau, Econ.Geol.: 50: 127-134; Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12; Gornitz, V., et al (1988), Origin of the Orphan Mine breccia pipe uranium deposit, Grand Canyon, AZ, Process Mineralogy VII: Applications to Mineral Benficiation Technology and Mineral Exploration, A.H. Vassiliou, Hausen, D.M., and Carson, D.J.T., editors, The Metallurgical Society, Warrendale, PA: 281-301.]
  		•  Pyrite
    var: Bravoite
    (Fe,Ni)S
     
    2
    Description: As cores of cubic pyrite crystals with siegenite.
    Reference: [Gornitz, V., et al (1988), Origin of the Orphan Mine breccia pipe uranium deposit, Grand Canyon, AZ, Process Mineralogy VII: Applications to Mineral Benficiation Technology and Mineral Exploration, A.H. Vassiliou, Hausen, D.M., and Carson, D.J.T., editors, The Metallurgical Society, Warrendale, PA: 281-301; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5, 7]
  		•  Pyrolusite
    MnO
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Quartz
    SiO
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Rameauite
    K
     
    2
    		Ca(UO
     
    2
    		)
     
    6
    		(OH)
     
    16
    		 · H
     
    2
    		O
    Description: Occurs among ores.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 351; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Rammelsbergite
    NiAs
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 351; Gornitz, V. (1986), Uranium mineralization at the Orphan mine breccia pipe, Grand Canyon, AZ (abs.), Geol. Soc. Amer. Abs. with Progs.: 18: 357; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Siderite
    FeCO
     
    3
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Siegenite
    from CoNi
     
    2
    		S
     
    4
    		 to NiCo
     
    2
    		S
     
    4
    Description: As cores of cubic pyrite crystals with bravoite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 371; Gornitz, V., et al (1988), Origin of the Orphan Mine breccia pipe uranium deposit, Grand Canyon, AZ, Process Mineralogy VII: Applications to Mineral Benficiation Technology and Mineral Exploration, A.H. Vassiliou, Hausen, D.M., and Carson, D.J.T., editors, The Metallurgical Society, Warrendale, PA: 281-301; .]
  		•  Skutterudite
    (Co,Fe,Ni)As
     
    2-3
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Smithsonite
    ZnCO
     
    3
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Tennantite
    (Cu,Ag,Fe,Zn)
     
    12
    		As
     
    4
    		S
     
    13
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Torbernite
    Cu(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    Description: Occurs in a vertical shear zone at portal of lower adit.
    Reference: [Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Tyuyamunite
    Ca(UO
     
    2
    		)
     
    2
    		[VO
     
    4
    		]
     
    2
    		 · 5-8H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Uraninite
    UO
     
    2
    Description: Occurs fairly pure as disseminations and as veins & lenses up to several inches thick; as thin coatings around quartz grains; botryoidal clusters in massive ore.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 407; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 1 & 3-5; Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147-A, A7-A12.]
  		•  Uranophane
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Uranospinite
    Ca(UO
     
    2
    		)(AsO
     
    4
    		)
     
    2
    		·10H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 408; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Vaesite
    NiS
     
    2
    Habit: Brilliant, tiny (to 2 mm diameter)
    Colour: White
    Description: Tiny crystals perched on coarse, yellow barite crystals.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 409; Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7..]
  		•  Wulfenite
    Pb[MoO
     
    4
    		]
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Wupatkiite ?
    (Co,Mg,Ni)Al
     
    2
    		(SO
     
    4
    		)
     
    4
    		·22H
     
    2
    		O
    Description: Unconfirmed - analyses by Anatoly Kasatkin showed no trace of Co; the material was a mixture of halotrichite and potassium alum (http://www.mindat.org/mesg-7-155381.html).
    Reference: [Richard Dale Collection]
  		•  Zeunerite
    Cu(UO
     
    2
    		)
     
    2
    		(AsO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]


    69 entries listed. 64 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: 9th Nov 2009 08:53:26