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Coconino Co., Arizona, USA

StandardDetailedBy ChemistryMineral Photos (105)Site Photos (2)Search GoogleMineral Report for Region

‡Ref.: Guild, F.N. (1910), The mineralogy of Arizona, The Chemical Publishing Co., Easton, PA.

Sutphin, H.B., and Wenrich, K.J. (1983) Structural control of breccia pipes on the southern Marble Plateau, Arizona: U.S. Geological Survey Open-File Report 83-0908, 6 p., 2 sheets, scale 1:50,000 [superseded by U.S. Geological Survey Miscellaneous Investigations Series Map I-1778, 1988].

Sutphin, H.B. (1986) Occurrence and structural control of collapse features on the southern Marble Plateau, Coconino County, Arizona: Flagstaff, Northern Arizona University, M.S. thesis, 139 p.

Sutphin, H.B., and Wenrich, K.J. (1986) Redwall Limestone joint control on Orphan- Mine type breccia pipes on the Marble Plateau, Arizona [abs.]: Geological Society of America Abstracts with Programs: 18(5): 416.

Wenrich, K.J., and Sutphin, H.B. (1987a) Mineralized breccia pipes on the Hualapai Indian Reservation, northwestern Arizona [abs.]: Geological Society of America Abstracts with Programs: 19(7): 886.

Wenrich, K.J., and Sutphin, H.B. (1987b) Unique minerals from Redwall Limestone caves, Arizona: Their association with mineralized breccia pipes [abs.]: Geological Society of America Abstracts with Programs: 19(6): 463.

Sutphin, H.B., and Wenrich, K.J. (1988) Maps showing structural control of breccia pipes on the southern Marble Plateau, north-central Arizona [Cameron South, Coconino Point SE, Cameron North, Coconino Point, Shadow Mtn. Well, Blue Spring SE, Blue Spring, Desert View, Willow Springs, Pillow Mtn., Salt Trail Canyon, and Cape Solitude 7.5 minute topo maps]: U.S. Geological Survey Miscellaneous Investigations Series Map I-1778, 2 sheets, scales 1:50,000 and 1:250,000.

Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, Arizona Bureau of Geology and Mineral Technology Fieldnotes: 18: 1-5, II.

Wenrich, K.J., Sutphin, H.B., and Van Gosen, B.S. (1988) Distribution of Redwall Limestone-hosted breccia pipes across NW Arizona and the geochemistry and mineralogy of their orebodies [abs.]: Geological Society of America Abstracts with Programs: 20(7): A139.

Sutphin, H.B., and Wenrich, K.J. (1989) Map of locations of collapse-breccia pipes in the Grand Canyon region of Arizona: U.S. Geological Survey Open-File Report 89-0550, 1 sheet, scale 1:250,000.

Welty, J.W., and Chenoweth, W.L. (1989) Bibliography for metallic mineral districts in Apache, Coconino, and Navajo Counties, Arizona: Arizona Geological Survey Circular 28, 47 p.

Wenrich, Karen J. & Sutphin, H.B. (1989a), Lithotectonic setting necessary for formation of a U-rich, solution-collapse breccia-pipe, Grand Canyon region, Arizona, USGS Open-File Rept. 89-0173.

Wenrich, K.J., and Sutphin, H.B. (1989b) Lithotectonic setting necessary for formation of a uranium rich, solution collapse breccia pipe province, Grand Canyon region, Arizona, in Metallogenesis of uranium deposits - Proceedings of a Technical Committee Meeting on Metallogenesis of Uranium Deposits organized by the International Atomic Energy Agency and held in Vienna, 9-12 March 1987: Vienna, International Atomic Energy Agency, p. 307-344.

Finch, W.I., Sutphin, H.B., Pierson, C.T., McCammon, R.B., and Wenrich, K.J. (1990) The 1987 estimate of undiscovered uranium endowment in the solution-collapse breccia pipes in the Grand Canyon region of northern Arizona and adjacent Utah: U.S. Geological Survey Circular 1051, 19 p.

Wenrich, K.J., Van Gosen, B.S., and Sutphin, H.B. (1990) Genesis and distribution of uraninite in solution-collapse breccia pipes, northwestern Arizona, in Carter, L.M.H., ed., USGS research on energy resources--1990, Program and abstracts, Sixth V.E. McKelvey Forum on mineral and energy resources: U.S. Geological Survey Circular 1060, p. 86-91.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 142, 251, 272, 279, 313, 348, 349, 353, 371, 380.




Mineral list contains entries from the region specified including sub-localities


Mineral List:
  		•  Abernathyite
    K
     
    2
    		(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 6H
     
    2
    		O
    Reference: [Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 4, 2000]
  		•  Adamite
    Zn
     
    2
    		(AsO
     
    4
    		)(OH)
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 102; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Michael Cline
  		•  Aenigmatite
    Na
     
    2
    		Fe
    2+
    5
    		TiO
     
    2
    		(Si
     
    6
    		O
     
    18
    		)
    Habit: Prismatic
    Colour: Very dark brown
    Description: Occurs in a riebeckite-soda granite porphyry.
    Reference: [Robinson, Henry H. (1913), The San Franciscan Volcanic Field, AZ, USGS PP 76: 110-112.]
  		•  Albite
    var: High Albite
    NaAlSi
     
    3
    		O
     
    8
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 171-172, 330, 354; Olsen, E. & L. Fuchs (1968), Krinovite, NaMg2CrSi3O10 = a new meteorite mineral, Science 161: 786-787]
  		•  'Albite-Anorthite Series'
    Reference: [MRDS database file No. 10027053.]
  		•  Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Description: Occurs in Archean rocks.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 106; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 94.]
  		•  Alum-(K)
    KAl[SO
     
    4
    		]
     
    2
    		 · 12H
     
    2
    		O
    Reference: [Anatoly Kasatkin analyses]
  		•  Alum-(Na)
    NaAl[SO
     
    4
    		]
     
    2
    		 · 12H
     
    2
    		O
    Reference: [Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544.]
  		•  Alunite
    KAl
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Colour: White
    Description: Occurs in uranium ores as powdery crusts and masses.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 106.]
  		•  Alunogen
    Al
     
    2
    		(SO
     
    4
    		)
     
    3
    		·17H
     
    2
    		O
    Reference: [Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544.]
  		•  Analcime
    Na
     
    2
    		[Al
     
    2
    		Si
     
    4
    		O
     
    12
    		] · 2H
     
    2
    		O
    Description: Occurs in the baked border zone of the dike.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 109; Barrington, J. & P.F. Kerr (1962), Alteration effects at Tuba dike, Cameron, Arizona, Geol. Soc. Amer. Bull.: 73: 101-112.]
  		•  Andersonite
    Na
     
    2
    		Ca(UO
     
    2
    		)[CO
     
    3
    		]
     
    3
    		 · 6H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 110; Bollin, E.M. & P.F. Kerr (1958), Uranium mineralization near Cameron, AZ, in New Mexico Geol. Soc. Guidebook 9th Field Conf., Black Mesa Basin, northeastern AZ: 164-168.]
  		•  Anglesite
    PbSO
     
    4
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Anhydrite
    CaSO
     
    4
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 125; Barrington, J. & P.F. Kerr (1963), Collapse features and silica plugs near Cameron, AZ, Geol. Soc. Amer. Bull.: 74: 1237-1258.]
  		•  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.]
  		•  Anthophyllite
    ☐[Mg
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Description: Occurs throughout older Precambrian metamorphic rocks, e.g.: cordierite-anthophyllite schists & paragneisses.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 114-115; Clark, M.D. (1979), Geology of the older Precambrian rocks of the Grand Canyon, Part III. Petrology of mafic schists and amphibolites, Precambrian Research: 8: 277-302.]
  		•  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.]
  		•  Atacamite
    Cu
     
    2
    		[(OH)
     
    3
    		|Cl]
    Reference: [No reference listed]
  		•  Augite
    (Ca,Na)(Mg,Fe
    2+
     
    		,Al,Fe
    3+
     
    		,Ti)[(Si,Al)
     
    2
    		O
     
    6
    		]
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 312; Barrington, J. & Kerr, P.F. (1962), Alteration effects at Tuba dike, Cameron, Arizona, Geol.Soc.Amer.Bull.: 73:101-112.]
  		•  Aurichalcite
    (Zn,Cu)
     
    5
    		[(OH)
     
    3
    		|CO
     
    3
    		]
     
    2
    Description: Occurs in a fault zone in Redwall Limestone.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 123, 127; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © 2008, JGW
  		•  Awaruite
    Ni
     
    3
    		Fe
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Azurite
    Cu
     
    3
    		[OH|CO
     
    3
    		]
     
    2
    Habit: Short prismatic
    Description: Occurs on clay & in vugs in sandstone
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 125; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Rob Lavinsky
  		•  Barringerite
    (Fe,Ni)
     
    2
    		P
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 129, 273.]
  		•  Baryte
    BaSO
     
    4
    Description: Occurs in a fault zone in Redwall Limestone.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 127; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
  		•  Beidellite
    (Na,Ca
     
    0.5
    		)
     
    0.3
    		Al
     
    2
    		(Si,Al)
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Description: Occurs as a clay mineral in the Chinle Formation.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 132.]
    Site Photo
    Cameron area, Cameron District, Coconino Co., Arizona, USA
    © Bert Hendriksen
  		•  'Bentonite'
    Reference: [Kiersch, G.A. (1955), Mineral resources Navajo-Hopi India reservations, Arizona-Utah, Vol. II, Univ. of AZ: 31, 34; Peirce, H.W. (1990), AZ Geol. Sur. Industrial Minerals card file; Phillips, K.A. (1987), Arizona Industrial Minerals, AZ Dept. of Mines & Minerals.]
  		•  β-Uranophane
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 408; Bollin, E.M. & P.F. Kerr (1958), Uranium mineralization near Cameron, AZ, in New Mexico Geol. Soc. Guidebook 9th Field Conf., Black Mesa Basin, northeastern AZ: 164-168; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 111.]
  		•  Bieberite
    CoSO
     
    4
    		·7H
     
    2
    		O
    Colour: Pink to rose.
    Description: Efflorescences in the Petrified Forest member of the Chinle Formation.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 136; Austin, S.R. (1964), Mineralogy of the Cameron area, Coconino Co., AZ, US Atomic Energy Comm. RME 99. Tech Inf. Serv., Oak Ridge, TN: 99.]
  		•  Biotite
    Reference: [Phillips, K.A. (1987), Arizona Industrial Minerals, AZ Dept. of Mines & Minerals Min.Rpt. 4; Peirce, H.W. (1990), AZ Geol. Sur. Industrial Minerals card file.]
  		•  Blödite
    Na
     
    2
    		Mg(SO
     
    4
    		)
     
    2
    		·4H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 140.]
  		•  Boltwoodite
    (K,Na)(UO
     
    2
    		)[HSiO
     
    4
    		] · 0.5H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 141.]
  		•  Bornite
    Cu
     
    5
    		FeS
     
    4
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 142.]
  		•  Braunite
    Mn
    2+
     
    		Mn
    3+
    6
    		[O
     
    8
    		|SiO
     
    4
    		]
    Reference: [Anthony, J. W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 337; Hewett, D.F., et al (1963), Deposits of the manganese oxides: supplement, Econ.Geol.: 58: 1-51; Potter, G.M. & R. Havens (1949), Concentration of oxide manganese ores from the Adams and Woody properties, Coconino Co., near Peach Springs, AZ, US Bur. of Mines Rept. Inv. 4439.]
  		•  Brochantite
    Cu
     
    4
    		[(OH)
     
    6
    		|SO
     
    4
    		]
    Habit: Acicular crystals in radiating groups & shorter, prismatic crystals
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 146, 162; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © 2002 John H. Betts
  		•  Bromargyrite
    AgBr
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 147, 150, 296, 311, 405, 414; Wenrich, K.J. & H.B. Sutphin (1989), Lithotectonic setting necessary for formation of a uranium-rich, solution-collapse breccia-pipe, Grand Canyon region, AZ, USGS Open File Rept. 89-0173.]
  		•  Bütschliite (TL)
    K
     
    2
    		Ca(CO
     
    3
    		)
     
    2
    Type Locality: Grand Canyon National Park, Coconino Co., Arizona, USA
    Reference: [Milton and Axelrod (1947) American Mineralogist: 32: 607-624. ]
  		•  Calcite
    CaCO
     
    3
    Description: Occurs replacing aggregates of lenticular gypsum crystals.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 151.]
  		•  Calcite
    var: Limestone Onyx
    Reference: [Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 47.]
  		•  Carbonatecyanotrichite
    Cu
     
    4
    		Al
     
    2
    		[(OH)
     
    12
    		|(CO
     
    3
    		,SO
     
    4
    		)] · 2H
     
    2
    		O
    Reference: [Colchester, D. M., Klish, D. R., Leverett, P. & Williams, P. A. (2008): Grandviewite, Cu3Al9(SO4)2(OH)29, a new mineral from the Grandview Mine, Arizona, USA. Australian Journal of Mineralogy, 14, 51-54.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © 2009, JGW
  		•  Carlsbergite
    CrN
    Habit: Lath-like
    Description: Micro-, oriented laths in kamacite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 154.]
  		•  Carnotite
    K
     
    2
    		(UO
     
    2
    		)
     
    2
    		[VO
     
    4
    		]
     
    2
    		 · 3H
     
    2
    		O
    Reference: [No reference listed]
  		•  Celestine
    SrSO
     
    4
    Reference: [Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544.]
  		•  Cerussite
    PbCO
     
    3
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 157.]
  		•  'Chabazite'
    Description: In mafic dikes associated with breccia pipes, localized in centers of dolomite replacements of olivine & as small veins.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 160; Barrington, J. & P.F. Kerr (1961), Breccia pipe near Cameron, AZ, Geol.Soc.Amer.Bull.: 72: 1661-1674.]
  		•  Chalcanthite
    CuSO
     
    4
    		·5H
     
    2
    		O
    Description: Occurs as cross-fiber veinlets associated with clay.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 160; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
  		•  'Chalcedony'
    Reference: [No reference listed]
  		•  'Chalcedony
    var: Petrified Wood'
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 289.]
  		•  Chalcoalumite
    CuAl
     
    4
    		[(OH)
     
    12
    		|SO
     
    4
    		] · 3H
     
    2
    		O
    Colour: Sky-blue to greenish
    Description: Occurs as botryoidal crusts on limonite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 162; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Brent Thorne 2007
  		•  Chalcocite
    Cu
     
    2
    		S
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 142.]
  		•  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..]
  		•  'Chlorite Group'
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 109; Barrington, J. & P.F. Kerr (1962), Alteration effects at Tuba dike, Cameron, Arizona, Geol. Soc. Amer. Bull.: 73: 101-112.]
  		•  Chromite
    FeCr
     
    2
    		O
     
    4
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 171-172, 354; Olsen, E. & L. Fuchs (1968), Krinovite, NaMg2CrSi3O10 = a new meteorite mineral, Science 161: 786-787.]
  		•  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.]
  		•  Chrysotile
    Mg
     
    3
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Colour: Golden-yellow
    Description: Filling cross-fiber veins. Fiber length from a fraction of an inch to 3 inches (7.5 cm) long. Color is remarkable.
    Reference: [Allen, M.A. & G.M. Butler (1921), Asbestos, Univ. AZ Bull. 113: 25.]
  		•  'Clay'
    Reference: [Elevatorski, E.A. (1978), Arizona Industrial Minerals, AZ Dept. of Min. Resources, Min Rpt. No. 2; Peirce, H.W. (1990), AZ Geol. Sur. Industrial Minerals card file; Phillips, K.A. (1987), Arizona Industrial Minerals, AZ Dept. of Mines & Mineral Resources Rpt. 4.]
  		•  'Coal
    var: Bituminous Coal'
    Reference: [Tenney, J.B. (1928), The mineral industries of Arizona, AZ Bur. Mines Bull. 125: 111-112.]
  		•  Coconinoite (TL)
    Fe
    3+
    2
    		Al
     
    2
    		(UO
     
    2
    		)
     
    2
    		[(OH)
     
    2
    		|SO
     
    4
    		|(PO
     
    4
    		)
     
    4
    		] · 20H
     
    2
    		O
    Type Locality: Sun Valley Mine, Vermillion Cliffs District, Coconino Co., Arizona, USA
    Description: Occurs in seams 1 mm or less in thickness, mostly along bedding planes of a light colored arkosic sandstone that is fine-grained, poorly sorted & thinly bedded.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 180; Young, E.J., et al (1966), Coconinoite, a new uranium mineral from Utah and Arizona, Am.Min.: 51: 651-663.]
  		•  Coesite (TL)
    SiO
     
    2
    Type Locality: Meteor Crater (Barringer Crater), Winslow, Coconino Co., Arizona, USA
    Description: Abundant constituent of sheared Coconino Sandstone in debris directly below crater floor & beyond the crater rim & in breccia deep below the crater floor & in lechatelierite in waterlain beds within the crater; irregular grains 5 to more than 50 microns.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 180; Chao, E.C.T., et al (1960), First natural occurrence of coesite, Science: 132: 220-222.]
    Site Photo
    Meteor Crater (Barringer Crater), Winslow, Coconino Co., Arizona, USA
    © 2007 Peter Cristofono
  		•  Coffinite
    (U,Th)[(OH)
     
    4x
    		|(SiO
     
    4
    		)
     
    1-x
    		]
    Reference: [No reference listed]
  		•  Cohenite
    (Fe,Ni,Co)
     
    3
    		C
    Reference: [Geochimica et Cosmochimica Acta, vol. 31, Issue 4, pp.621-628]
    Site Photo
    Canyon Diablo meteorite, Meteor Crater and vicinity, Winslow, Coconino Co., Arizona, USA
    © 2008, JGW
  		•  Copiapite
    Fe
    2+
     
    		Fe
    3+
    4
    		[OH|(SO
     
    4
    		)
     
    3
    		]
     
    2
    		 · 20H
     
    2
    		O
    Description: Occurs with jarosite in uranium deposits.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 184; Austin, S.R. (1964), Mineralogy of the Cameron area, Coconino Co., AZ, US Atomic Energy Comm. RME 99. Tech Inf. Serv., Oak Ridge, TN: 99.]
  		•  Copper
    Cu
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Cordierite
    (Mg,Fe)
     
    2
    		Al
     
    4
    		Si
     
    5
    		O
     
    18
    Description: Occurs in older Precambrian rocks such as cordierite-anthophyllite schists.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 114-115, 187; Clark, M.D. (1979), Geology of the older Precambrian rocks of the Grand Canyon, Part III. Petrology of mafic schists and amphibolites, Precambrian Research: 8: 277-302.]
  		•  Corrensite
    (Mg,Fe)
     
    9
    		(Si,Al)
     
    8
    		O
     
    20
    		(OH)
     
    10
    		·nH
     
    2
    		O
    Description: Abundant in various units of the widespread Supai Formation.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 189; McKee, E.D. (1982), The Supai Group of the Grand Canyon, USGS PP 1173.]
  		•  Covellite
    CuS
    Habit: Hexagonal Plates
    Colour: Blue, Purple, Irridescent
    Description: Single specimen, found on mine floor. Sharp, Irridescent, Hexagonal plates to about 1mm, both interlocking and isolated. Associated with unknown green species.
    Reference: [Michael Cline Collection]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Michael Cline
  		•  Cristobalite
    SiO
     
    2
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Cryptomelane
    K(Mn
    4+
     
    		,Mn
    2+
     
    		)
     
    8
    		O
     
    16
    Description: Cementing rock fragments in veins cutting Kaibab Limestone.
    Reference: [Anthony, J. W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 194, 337; Hewett, D.F., et al (1963), Deposits of the manganese oxides: supplement, Econ.Geol.: 58: 1-51; Potter, G.M. & R. Havens (1949), Concentration of oxide manganese ores from the Adams and Woody properties, Coconino Co., near Peach Springs, AZ, US Bur. of Mines Rept. Inv. 4439.]
  		•  Cryptomelane
    var: Thallian Cryptomelane
    Description: Fine-grained, massive material, intimately associated with hollandite. Contains 0.23% Tl.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 194, 252; Crittenden, M.D., et al (1962), Studies of manganese oxide minerals-VI. Thallium in some manganese oxides, Am.Min.: 47: 1461-1467.]
  		•  Cuprite
    Cu
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 142.]
  		•  Cyanotrichite
    Cu
     
    4
    		Al
     
    2
    		[(OH)
     
    12
    		|SO
     
    4
    		] · 2H
     
    2
    		O
    Habit: Radiating crystals
    Description: Crystals; also occurs as massive nodules & veins closely associated with brochantite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 146, 198; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221; Rogers, A.F. (1922), The optical properties and morphology of bisbeeite, Am.Min.: 7: 153-154; Gordon, S.G. (1923), Recently described 'bisbeeite' from the Grand Canyon is cyanotrichite, Am.Min.: 8: 92-93; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 65.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © 2008, JGW
  		•  Daubréelite
    Fe
    2+
     
    		Cr
    3+
    2
    		S
     
    4
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 199; Frondel, C. & U.B. Marvin (1967a), Lonsdaleite, a new hexagonal polymorph of diamond. Nature: 214: 587-589.]
  		•  Descloizite
    Pb(Zn,Cu)[OH|VO
     
    4
    		]
    Description: Fine, stalactitic crystal groups.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 200; Galbraith. F.W. & D.J. Brennan (1959), Minerals of AZ: 70.]
  		•  Devilline
    CaCu
     
    4
    		(SO
     
    4
    		)
     
    2
    		(OH)
     
    6
    		·3H
     
    2
    		O
    Habit: Lath-like
    Colour: Bluish-green
    Description: Crusts.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 201-202; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
  		•  Diamond
    C
    Colour: Black
    Description: Small.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 203; Frondel, C. & U.B. Marvin (1967a), Lonsdaleite, a new hexagonal polymorph of diamond. Nature: 214: 587-589; Foote, A.E. (1891a), A new locality for meteoric iron with a preliminary notice of the discovery of diamonds in the iron, Amer. Jour. Sci.: 42: 413-417; Kunz, G.F. & C.W. Huntington (1893), On the diamond in the Cañon Diablo meteoric iron and on the hardness of carborundum, Amer. Jour. Sci.: 46: 470-471; Ksanda, C.J. & E.P. Henderson (1939), Identification of diamond in the Canyon Diablo iron, Am.Min.: 24: 677-680.]
  		•  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: [No reference listed]
  		•  Enargite
    Cu
     
    3
    		AsS
     
    4
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Enstatite
    Mg
     
    2
    		[SiO
     
    3
    		]
     
    2
    Reference: [Lunar and Planetary Science XXXI]
  		•  Erythrite
    Co
     
    3
    		(AsO
     
    4
    		)
     
    2
    		·8H
     
    2
    		O
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Fairchildite (TL)
    K
     
    2
    		Ca(CO
     
    3
    		)
     
    2
    Type Locality: Grand Canyon National Park, Coconino Co., Arizona, USA
    Reference: [AmMin 32:607]
  		•  'Feldspar Group'
    Reference: [Peirce, H.W., S.B. Keith and J.C.Wilt (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 103-159, 202-289; Bollin & Kerr (1958), Guidebook for New Mexico Geol.Soc., 9th. Field Conference F.P. 164-168; ]
  		•  Ferrimolybdite
    Fe
     
    2
    		[MoO
     
    4
    		]
     
    3
    		 · nH
     
    2
    		O
    Reference: [No reference listed]
  		•  Ferrohexahydrite
    FeSO
     
    4
    		·6H
     
    2
    		O
    Colour: White
    Description: Pulverulent, coating some of the cinders as a fumarolic deposit.
    Reference: [Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 4; Hanson, et al (2000).; Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544.]
  		•  Flagstaffite (TL)
    C
     
    10
    		H
     
    22
    		O
     
    3
    Type Locality: Flagstaff, Coconino Co., Arizona, USA
    Description: Occurs as a filling in radial cracks of certain buried tree trunks.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 222; Guild, F.N. (1920), Flagstaffite, a new mineral from AZ, Am.Min.: 5: 169-172; Guild, F.N. (1921), The identity of flagstaffite and terpin hydrate, Am.Min.: 6, 133-135; Guild, F.N. (1922), Flagstaffite, a new Arizona mineral, and its identity with terpin hydrate (abs.), Science: 55: 543; Strunz, H. & B. Contag (1965), Evenkite, idrialite, and refikite (abs.), Am.Min.: 50: 2109-2110.]
    Site Photo
    Flagstaff, Coconino Co., Arizona, USA
    © 2007, JGW
  		•  Fluorite
    CaF
     
    2
    Habit: Small cubes
    Colour: Pink
    Description: Occurs as small cubic crystals and fragments as inclusions in zircon crystals.
    Reference: [Robinson, Henry H. (1913), The San Franciscan Volcanic Field, AZ, USGS PP 76: 110-112.]
  		•  Forsterite
    Mg
     
    2
    		[SiO
     
    4
    		]
    Reference: [Lunar and Planetary Science XXXI]
  		•  Galena
    PbS
    Reference: [No reference listed]
  		•  'Garnet Group'
    X
     
    3
    		Z
     
    2
    		(TO
     
    4
    		)
     
    3
    		 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V)
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 380; Campbell, I. (1936), On the occurrence of sillimanite and staurolite in Grand Canyon, Grand Canyon Nat. Hist. Assoc. Bull. 5: 17-22; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 102.]
  		•  Gersdorffite
    NiAsS
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Gold
    Au
    Description: Occurs in shales of the Chinle shales.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 236, 293; Lawson, A.C. (1913), The gold in the Shinarump (Chinle) at Paria, Econ.Geol.: 8: 434-448.]
  		•  Grandviewite (TL)
    Cu
     
    3
    		Al
     
    9
    		[(OH)
     
    29
    		|(SO
     
    4
    		)
     
    2
    		]
    Type Locality: Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    Reference: [IMA website]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Michael Cline
  		•  Graphite
    C
    Description: As small nodules.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 203, 239, 356; Ksanda, C.J. & E.P. Henderson (1939), Identification of diamond in the Canyon Diablo iron, Am.Min.: 24: 677-680.]
    Site Photo
    Canyon Diablo meteorite, Meteor Crater and vicinity, Winslow, Coconino Co., Arizona, USA
    © Thomas Witzke
  		•  Graphite
    var: Cliftonite
    C
    Description: Tiny cube-shaped masses comprised of numerous crystallites.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 176; El Goresy, A. (1965), Mineralbestand und structuren der Graphit - Und Sulfideinschlüsse in Eisenmeteoriten. Geochim. Cosmochim. Acta: 29: 1131--1151; Brett, R. & G.T. Higgins (1967), Cliftonite in meteorites: A proposed origin. Science: 156: 819-820.; Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Greenockite
    CdS
    Reference: [No reference listed]
  		•  'Gummite'
    Reference: [No reference listed]
  		•  Gypsum
    Ca[SO
     
    4
    		] · 2H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 201-202; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
  		•  Halotrichite
    FeAl
     
    2
    		(SO
     
    4
    		)
     
    4
    		·22H
     
    2
    		O
    Reference: [No reference listed]
  		•  Haxonite (TL)
    (Fe,Ni)
     
    23
    		C
     
    6
    Type Locality: Canyon Diablo meteorite, Meteor Crater and vicinity, Winslow, Coconino Co., Arizona, USA
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 244; Scott, E.R.D. (1971), New carbide (Fe,Ni)23C6, found in meteorites, Nat. Phys. Sci.: 229: 61-62; Am.Min.: 59 (1974), 209.]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Hematite
    var: Martite
    Reference: [Hanson, S.L.. et al (2002) 29th Rochester Mineralogical Symposium, Abstracts of contributed papers, 8.; Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544.]
  		•  Hemimorphite
    Zn
     
    4
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    Reference: [Econ Geol (1985) 80:1722-1735]
  		•  Hexahydrite
    MgSO
     
    4
    		·6H
     
    2
    		O
    Description: Occurs in breccia pipes with uranium ores.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 251; Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, AZ Bur. Geol. Min. Tech. Fieldnotes: 18: 1-5, II.]
  		•  Hollandite
    Ba(Mn
    4+
     
    		,Mn
    2+
     
    		)
     
    8
    		O
     
    16
    Description: Fine-grained, massive material, intimately associated with thallian cryptomelane.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 194, 252; Crittenden, M.D., et al (1962), Studies of manganese oxide minerals-VI. Thallium in some manganese oxides, Am.Min.: 47: 1461-1467.]
  		•  'Hornblende'
    Reference: [Robinson, Henry H. (1913), The San Franciscan Volcanic field, AZ, USGS PP 76: 146.]
  		•  Hydrohonessite
    Ni
     
    6
    		Fe
    3+
    2
    		[(OH)
     
    16
    		|SO
     
    4
    		] · 7H
     
    2
    		O
    Description: Occurs as a post-mining incrustation on the walls of the pit.
    Reference: [Williams, S.A. and F.P. Cesbron (1995) Wupatkiite from the Cameron Uranium District, Arizona, a new member of the halotrichite group. Mineralogical Magazine: 59: 553-556; Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 5.]
  		•  Hydromagnesite
    Mg
     
    5
    		[(CO
     
    3
    		)
     
    4
    		(OH)
     
    2
    		] · 4H
     
    2
    		O
    Colour: White
    Description: Occurs as crusts in a cave.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 255.]
  		•  Hydrozincite
    Zn
     
    5
    		[(OH)
     
    3
    		|CO
     
    3
    		]
     
    2
    Description: Occurs with other secondary lead and zinc minerals.
    Reference: [Galbraith. F.W. & D.J. Brennan (1959), Minerals of AZ: 52.]
  		•  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
    Description: Abundant on walls of older mine workings in uranium deposits in a paleo-stream channel filled with Shinarump conglomerate.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 258, 431; Petersen, R.G., et al (1959), An occurrence of rhenium associated with uraninite in Coconino Co., AZ, Econ.Geol.: 54: 254-267.]
  		•  Iriginite
    UO
     
    2
    		Mo
     
    2
    		O
     
    7
    		·3H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 260.]
    Site Photo
    Cameron, Cameron District, Coconino Co., Arizona, USA
    © Thomas Witzke
  		•  Iron
    var: Kamacite
    (Fe,Ni)
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 154, 176.; Space Science Reviews, Volume 14, Issue 6, pp.758-831]
    Site Photo
    Canyon Diablo meteorite, Meteor Crater and vicinity, Winslow, Coconino Co., Arizona, USA
    © 2003 John H. Betts
  		•  Jarosite
    KFe
    3+
     
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Description: Very abundant in uranium deposits. Occurs associated with copiapite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 261; Austin, S.R. (1964), Mineralogy of the Cameron area, Coconino Co., AZ, US Atomic Energy Comm. RME 99. Tech Inf. Serv., Oak Ridge, TN: 99.]
  		•  Jordisite
    MoS
     
    2
    Description: Abundant on walls of older mine workings in uranium deposits in a paleo-stream channel filled with Shinarump conglomerate.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 263; Petersen, R.G. (1960), Detrital-appearing uraninite in the Shinarump Member of the Chinle Formation in northern Arizona, Econ.eol.: 55: 138-149; Peirce, H.W., S.B. Keith and J.C.Wilt (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 103-159, 202-289.]
  		•  Kaersutite
    [Na][Ca
     
    2
    		][Mg
     
    4
    		Ti][O|OH|Al
     
    2
    		Si
     
    6
    		O
     
    22
    		]
    Habit: Micro-crystals
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 264.]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Leicht, W.C. (1971), Minerals of the Grandview Mine, Min.Rec.: 2(5): 214-221.]
  		•  Kieserite
    MgSO
     
    4
    		·H
     
    2
    		O
    Description: Occurs as an efflorescent mineral.
    Reference: [Corbett, R.G., Hanner, B.M., and Quick, T.J. (1989) Seeps and efflorescent minerals in the Grand Canyon: Predicted vs. identified phases [abs.]: Geological Society of America Abstracts with Programs, v. 21, no. 4, p. 8; Quick, T.J., R.G. Corbett, and B.M. Manner (1989) Efflorescent minerals occurring in the gorge of the Grand Canyon, Abstract with Programs, Geological Society of America: 21(4): 44-45; Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005.]
  		•  Kosmochlor
    NaCr[Si
     
    2
    		O
     
    6
    		]
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 171-172, 269, 354; Olsen, E. & L. Fuchs (1968), Krinovite, NaMg2CrSi3O10 = a new meteorite mineral, Science 161: 786-787.; Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Krinovite (TL)
    Na
     
    2
    		Mg
     
    4
    		Cr
    3+
    2
    		[O
     
    2
    		|Si
     
    6
    		O
     
    18
    		]
    Type Locality: Canyon Diablo meteorite, Meteor Crater and vicinity, Winslow, Coconino Co., Arizona, USA
    Colour: Deep emerald green
    Description: Minute, subhedral grains disseminated in graphite nodules.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 171-172, 269, 356; Olsen, E. & L. Fuchs (1968), Krinovite, NaMg2CrSi3O10 = a new meteorite mineral, Science 161: 786-787; HB2/1 (1995); Eur.Jour.Min.: 11 (1999): 743.]
  		•  Langite
    Cu
     
    4
    		[(OH)
     
    6
    		|SO
     
    4
    		] · 2H
     
    2
    		O
    Colour: Greenish
    Description: As silky crusts lining cavities.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 271; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
  		•  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.]
  		•  Lautite
    CuAsS
    Description: A relatively late-stage, primary sulfide mineral in uranium-bearing breccia pipes.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 272; Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, AZ Bur. Geol. Min. Tech. Fieldnotes: 18: 1-5, II.]
  		•  Lawrencite
    (Fe
    2+
     
    		,Ni)Cl
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 129, 273.]
  		•  Lechatelierite
    SiO
     
    2
    Description: Results from the fusion of fine-grained Coconino Sandstone.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 274; Rogers, A.F. (1930), A unique occurrence of lechatelierite or silica glass, Amer. Jour. Sci.: 19: 195-202; Kerr, 1977. Optical Mineralogy, p.283.]
    Site Photo
    Meteor Crater (Barringer Crater), Winslow, Coconino Co., Arizona, USA
    © 2008 Peter Cristofono
  		•  Limonite
    FeO(OH)·nH
     
    2
    		O
    Reference: [Leicht, W.C. (1971), Minerals of the Grandview Mine, Min.Rec.: 2(5): 214-221.]
  		•  Linnaeite
    Co
    2+
     
    		Co
    3+
    2
    		S
     
    4
    Description: Occurs in breccia pipes mined for uranium.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 279; Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, AZ Bur. Geol. Min. Tech. Fieldnotes: 18: 1-5, II.]
  		•  Lonsdaleite (TL)
    C
    Type Locality: Canyon Diablo meteorite, Meteor Crater and vicinity, Winslow, Coconino Co., Arizona, USA
    Habit: Cubes & cubo-octahedra to 0.7 mm
    Colour: Black
    Description: Coated with graphite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 203, 280; Frondel, C. & U.B. Marvin (1967a), Lonsdaleite, a new hexagonal polymorph of diamond. Nature: 214: 587-589; Frondel, C. & U.B. Marvin (1967b), Lonsdaleite, a hexagonal polymorph of diamond, Am.Min.: 52: 1576.]
  		•  Mackinawite
    (Fe,Ni)
     
    9
    		S
     
    8
    Description: Occurs with troilite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 282; Bunch, T.E. & K. Keil (1969), Mineral compositions and petrologyof silicate inclusions in iron meteorites: Chemistry of chromite in non-chondritic meteorites. meteoritics: 4: 155-158.]
  		•  Maghemite
    Fe
     
    2
    		O
     
    3
    Description: Occurs as elongate, isotropic grains alternating with a goethite-like iron oxide as a minor component of tiny metallic spheroids probably formed from the meteorite impact.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 282, 403; Gigl, P.D. & F. Dachille (1968), Effect of pressure and temperature on the reversal transitions of stishovite, Meteorites: 4: 123-136; Mead, C., et al (1965), Metallic spheroids from Meteor Crater, AZ, Am.Min.: 50: 667-681.]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Description: Botryoidal crusts coating limestone & in fissures in clay.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 125, 285; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
  		•  Marcasite
    FeS
     
    2
    Habit: Cyclically twinned.
    Description: As cyclically twinned inclusions in amethyst crystals in petrified wood.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 289.]
  		•  Mercury
    Hg
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 236, 293; Lawsen, C. (1936), The occurrence of minute quantities of mercury in the Chinle shales at Lee's Ferry, AZ, Econ.Geol.: 31: 610-617; Lawson, A.C. (1913), The gold in the Shinarump (Chinle) at Paria, Econ.Geol.: 8: 434-448.]
  		•  Meta-autunite
    Ca(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		· 6-8H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 295, 407-408; Holland, H.D., et al (1958), The use of leachable uranium in geochemical prospecting on the Colorado Plateau-II, the distribution of leachable uranium in surface samples in the vicinity of orebodies, Econ.Geol.: 53: 190-209.]
  		•  Metahewettite
    Ca[V
     
    2
    		O
     
    6
    		|V
     
    4
    		O
     
    10
    		] · 3H
     
    2
    		O
    Reference: [Peirce, H.W., S.B. Keith and J.C.Wilt (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 218; Barrett, D.C. & C. Collins (1953), Preliminary Reconnaissance Report, US Atomic Energy Comm. USAEL, RME 155.]
  		•  Metasideronatrite
    Na
     
    4
    		Fe
     
    2
    		(SO
     
    4
    		)
     
    4
    		(OH)
     
    2
    		·2H
     
    2
    		O
    Reference: [No reference listed]
  		•  Metatorbernite
    Cu(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Description: Occurs in uranium deposits in Shinarump Conglomerate associated with uraninite & meta-autunite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 295; Holland, H.D., et al (1958), The use of leachable uranium in geochemical prospecting on the Colorado Plateau-II, the distribution of leachable uranium in surface samples in the vicinity of orebodies, Econ.Geol.: 53: 190-209.]
  		•  Metatyuyamunite
    Ca(UO
     
    2
    		)
     
    2
    		[VO
     
    4
    		]
     
    2
    		 · 3-5H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 296; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 77.]
  		•  Metauranocircite
    Ba(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 7H
     
    2
    		O
    Colour: Yellow
    Description: Abundant ore mineral that forms fine-grained masses, associated with fossil logs in Petrified Forest member, Chinle Formation.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 296, 407-408; Holland, H.D., et al (1958), The use of leachable uranium in geochemical prospecting on the Colorado Plateau-II, the distribution of leachable uranium in surface samples in the vicinity of orebodies, Econ.Geol.: 53: 190-209; Austin, S.R. (1964), Mineralogy of the Cameron area, Coconino Co., AZ, US Atomic Energy Comm. RME 99. Tech Inf. Serv., Oak Ridge, TN: 99..]
  		•  Metazeunerite
    Cu(UO
     
    2
    		)
     
    2
    		[AsO
     
    4
    		]
     
    2
    		 · 8H
     
    2
    		O
    Habit: Tabular
    Colour: Leek-green
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 297, 365; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Michael Cline
  		•  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..]
  		•  Moissanite (TL)
    SiC
    Type Locality: Canyon Diablo meteorite, Meteor Crater and vicinity, Winslow, Coconino Co., Arizona, USA
    Reference: [Am Min 77 (1992), 208]
  		•  Molybdenite
    MoS
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Montmorillonite
    (Na,Ca)
     
    0.33
    		(Al,Mg)
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Description: Abundant alteration product of mafic dike rocks associated with the Black Peak breccia pipe.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 304, 305.]
  		•  Moorhouseite
    (Co,Ni,Mn)SO
     
    4
    		·6H
     
    2
    		O
    Description: Occurs as crusts in sandstone.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 305.]
  		•  Naumannite
    Ag
     
    2
    		Se
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 147, 150, 296, 311, 405, 414; Wenrich, K.J. & H.B. Sutphin (1989), Lithotectonic setting necessary for formation of a uranium-rich, solution-collapse breccia-pipe, Grand Canyon region, AZ, USGS Open File Rept. 89-0173.]
  		•  Nepheline
    (Na,K)[AlSiO
     
    4
    		]
    Description: As anhedral crystals between blades of augite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 312; Barrington, J. & Kerr, P.F. (1962), Alteration effects at Tuba dike, Cameron, Arizona, Geol.Soc.Amer.Bull.: 73:101-112.]
  		•  Nickelboussingaultite
    (NH
     
    4
    		)
     
    2
    		Ni(SO
     
    4
    		)
     
    2
    		·6H
     
    2
    		O
    Reference: [Williams, S.A. and F.P. Cesbron (1995) Wupatkiite from the Cameron Uranium District, Arizona, a new member of the halotrichite group. Mineralogical Magazine: 59: 553-556; Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 7.]
    Site Photo
    Cameron, Cameron District, Coconino Co., Arizona, USA
    © 2008, JGW
  		•  Nickeline
    NiAs
    Description: Formed as an early stage primary mineral in uranium-bearing breccia pipes.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 313; Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, AZ Bur. Geol. Min. Tech. Fieldnotes: 18: 1-5, II.]
  		•  'Nickel-iron'
    Reference: [Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. Mines Bull. 153: 10.]
    Site Photo
    Canyon Diablo meteorite, Meteor Crater and vicinity, Winslow, Coconino Co., Arizona, USA
    © Peter Kohorst
  		•  Nickelphosphide
    (Ni,Fe)
     
    3
    		P
    Reference: [The Mineralogical Record July 1, 2000 Mandarino, J. A. ]
  		•  Niter
    KNO
     
    3
    Colour: White
    Description: Thin coatings on limestone shelves in ancient cliff dwellings.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 313; Guild, F.N. (1910), Mineralogy of Arizona; Galbraith, F.W. & Brennan (1959), Minerals of AZ: 56.]
  		•  'Obsidian'
    Colour: Black
    Description: Lustrous material.
    Reference: [Robinson, Henry H. (1913), The San Franciscan volcanic field, AZ, USGS PP 76: 67.]
    Site Photo
    Obsidian Tank, Coconino Co., Arizona, USA
    © 2006 Peter Cristofono
  		•  'Obsidian
    var: Mahogany Obsidian'
    Reference: [P Cristofono collection]
    Site Photo
    Obsidian Tank, Coconino Co., Arizona, USA
    © 2006 Peter Cristofono
  		•  Olivenite
    Cu
     
    2
    		[OH|AsO
     
    4
    		]
    Habit: Short prismatic; acicular groups
    Colour: Olive-green; lighter olive-green
    Description: Occurs on altered metazeunerite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 162, 297, 316, 365; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Michael Cline
  		•  'Olivine'
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    4
    		]
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Opal
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: [No reference listed]
  		•  Pararammelsbergite
    NiAs
     
    2
    Description: An early-stage primary mineral in uramium-bearing breccia pipes.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 313, 321; Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, AZ Bur. Geol. Min. Tech. Fieldnotes: 18: 1-5, II.]
  		•  Parnauite
    Cu
     
    9
    		[(OH)
     
    10
    		|SO
     
    4
    		|(AsO
     
    4
    		)
     
    2
    		] · 7H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 322.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Brent Thorne 2007
  		•  Pentahydrite
    MgSO
     
    4
    		·5H
     
    2
    		O
    Description: Occurs with efflorescent salts.
    Reference: [Quick, T.J., R.G. Corbett, and B.M. Manner (1989) Efflorescent minerals occurring in the gorge of the Grand Canyon, Abstract with Programs, Geological Society of America: 21(4): 44-45; Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 7.]
  		•  Phosphuranylite
    (H
     
    3
    		O)
     
    3
    		KCa(UO
     
    2
    		)
     
    7
    		[O|PO
     
    4
    		]
     
    4
    		 · 8H
     
    2
    		O
    Reference: [No reference listed]
  		•  Pickeringite
    MgAl
     
    2
    		(SO
     
    4
    		)
     
    4
    		·22H
     
    2
    		O
    Description: Co-bearing, intergrown with Mg-bearing wupatkiite.
    Reference: [Anatoly Kasatkin analyses]
  		•  Platinum
    Pt
    Reference: [USGS MRDS database file #10038174; Quiring, Heinrich (1962), Platinmetalle i die metallischen Rohstoffe, Band 16, Stuttgart, Ferdinand Enke Verlag: 245; Blake, W.P. (1900), Does platinum occur in Arizona?, Engineering and Mining Jour.: 69(Feb 24): 224.]
  		•  'Plessite'
    Reference: [www.alaska.net/~meteor/CDinfo.htm; Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  'Psilomelane'
    Reference: [Anthony, J. W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 194, 337; Hewett, D.F., et al (1963), Deposits of the manganese oxides: supplement, Econ.Geol.: 58: 1-51.]
  		•  'Pumice'
    Reference: [Peirce, H.W. (1990), Arizona Geol. Surv. Industrial Mineral card files; Phillips, K.A. (1987), Arizona Industrial Minerals, AZ Dept. of Mines & Minerals.]
  		•  Pyrite
    FeS
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 125, 340; Barrington, J. & P.F. Kerr (1963), Collapse features and silica plugs near Cameron, AZ, Geol. Soc. Amer. Bull.: 74: 1237-1258.]
  		•  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]
  		•  Pyrite
    var: Cobaltoan Pyrite
    (Fe,Co)S
     
    2
    Habit: Small cubes
    Description: Enclosing marcasite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 289, 341; Hamilton, P. & P.F. Kerr (1959); Umohoite from Cameron, AZ, Am.Min.: 44: 1248-1260; Rosenzweig, A.J. et al (1954), Widespread occurrence and character of uraninite in the triassic and Jurassic sediments of the Colorado Plateau, Econ.Geol.: 49: 351-361; Keith (1970), AZ Bur. Mines Bull. 182: 103-159, 202-289; Bollin & Kerr (1958), Guidebook for New Mexico Geol.Soc., 9th. Field Conference F.P. 164-168.]
  		•  Pyrolusite
    MnO
     
    2
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Quartz
    SiO
     
    2
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831 ]
  		•  Quartz
    var: Amethyst
    SiO
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 289.]
  		•  Quartz
    var: Chert
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 125; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 53, 54.]
  		•  Ralstonite
    NaMgAl(F,OH)
     
    6
    		·H
     
    2
    		O
    Reference: [Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544.]
  		•  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
    Description: An early-stage primary mineral in uramium-bearing breccia pipes.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 313; Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, AZ Bur. Geol. Min. Tech. Fieldnotes: 18: 1-5, II.]
  		•  Reevesite
    Ni
     
    6
    		Fe
    3+
    2
    		[(OH)
     
    16
    		|CO
     
    3
    		] · 4H
     
    2
    		O
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Rhodochrosite
    MnCO
     
    3
    Description: Occurs in uramium-bearing breccia pipes.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 353; Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, AZ Bur. Geol. Min. Tech. Fieldnotes: 18: 1-5, II.]
  		•  Richterite
    Na[CaNa][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 171-172, 354; Olsen, E. & L. Fuchs (1968), Krinovite, NaMg2CrSi3O10 = a new meteorite mineral, Science 161: 786-787.]
  		•  Riebeckite
    [ ][Na
     
    2
    		][Fe
    2+
    3
    		Fe
    3+
    2
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Habit: Small, stout, prismatic crystals to 1 x 1.5 mm
    Colour: Blue
    Description: Occurs in a riebeckite-soda granite porphyry & as larger segregations & filling veinlets in the rock.
    Reference: [Robinson, Henry H. (1913), The San Franciscan Volcanic Field, AZ, USGS PP 76: 110-112.]
  		•  Roaldite
    (Fe,Ni)
     
    4
    		N
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 355.]
  		•  Roedderite
    (Na,K)
     
    2
    		(Mg,Fe)
     
    5
    		Si
     
    12
    		O
     
    30
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 171-172, 356; Olsen, E. & L. Fuchs (1968), Krinovite, NaMg2CrSi3O10 = a new meteorite mineral, Science 161: 786-787]
  		•  Sabugalite
    HAl(UO
     
    2
    		)
     
    4
    		(PO
     
    4
    		)
     
    4
    		·16H
     
    2
    		O
    Reference: [No reference listed]
  		•  Sanidine
    K[AlSi
     
    3
    		O
     
    8
    		]
    Description: Occurs as phenocrysts.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 355.]
  		•  Schoepite
    (UO
     
    2
    		)
     
    8
    		O
     
    2
    		(OH)
     
    12
    		 · 12H
     
    2
    		O
    Reference: [No reference listed]
  		•  Schorl
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Colour: Black
    Description: Crystals in pegmatite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 400; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 102.]
  		•  Schreibersite
    (Fe,Ni)
     
    3
    		P
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 129, 273.; Space Science Reviews Volume 14, Number 6 / July, 1973 pp 758-831]
  		•  Schröckingerite
    NaCa
     
    3
    		(UO
     
    2
    		)[F|(CO
     
    3
    		)
     
    3
    		|SO
     
    4
    		] · 10H
     
    2
    		O
    Reference: [No reference listed]
  		•  Scorodite
    Fe
    3+
     
    		AsO
     
    4
    		·2H
     
    2
    		O
    Colour: Light brown to gray
    Description: Occurs as mammillary masses with radiating internal structure.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 102, 162, 297, 365; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Michael Cline
  		•  'Sericite'
    Reference: [Peirce, H.W., S.B. Keith and J.C.Wilt (1970), Coal, oil, natural gas, helium, and uranium in Arizona, AZ Bur. Mines Bull. 182: 103-159, 202-289; Bollin & Kerr (1958), Guidebook for New Mexico Geol.Soc., 9th. Field Conference F.P. 164-168; ]
  		•  'Serpentine Group'
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O
    Description: Nodules and layers in limestone beneath and above a diabase sill.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 367; Allen, M.A. & G.M. Butler (1921), Asbestos, Univ. AZ Bull. 113: 24-25; Selfridge, G.C., Jr. (1936), An X-ray and optical investigation of the serpentine minerals, Am.Min.: 21: 463-503; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 106.]
  		•  Siderite
    FeCO
     
    3
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Siderotil
    FeSO
     
    4
    		·5H
     
    2
    		O
    Description: Occurs in uramium-bearing breccia pipes.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 371; Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, AZ Bur. Geol. Min. Tech. Fieldnotes: 18: 1-5, II.]
  		•  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; .]
  		•  Sillimanite
    Al
     
    2
    		[O|SiO
     
    4
    		]
    Description: Abundant.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 371; Campbell, I. (1936), On the occurrence of sillimanite and staurolite in Grand Canyon, Grand Canyon Nat. Hist. Assoc. Bull.: 5: 17-22; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 98.]
  		•  Skutterudite
    (Co,Fe,Ni)As
     
    2-3
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Skutterudite
    var: Smaltite
    (Co,Fe,Ni)As
     
    2
    Reference: [No reference listed]
  		•  Smithsonite
    ZnCO
     
    3
    Description: Occurs in small amounts lining vugs in clay in limestone.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 374; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Rob Lavinsky
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Spherocobaltite
    CoCO
     
    3
    Description: Occurs associated with well-oxidized uranium occurrences.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 376; Austin, S.R. (1964), Mineralogy of the Cameron area, Coconino Co., AZ, US Atomic Energy Comm. RME 99. Tech Inf. Serv., Oak Ridge, TN: 99.]
  		•  Starkeyite
    MgSO
     
    4
    		·4H
     
    2
    		O
    Description: Occurs in uramium-bearing breccia pipes.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 380; Wenrich, K.J. & H.B. Sutphin (1988), Recognition of breccia pipes in northern Arizona, AZ Bur. Geol. Min. Tech. Fieldnotes: 18: 1-5, II.]
  		•  Staurolite
    (Fe
    2+
     
    		,Mg,Zn)
     
    1.5-2
    		Al
     
    9
    		[O
     
    6
    		|(OH,O)
     
    2
    		|(SiO
     
    4
    		)
     
    4
    		]
    Habit: Stout prismatic
    Colour: Brownish-red
    Description: Occurs with garnet in metamorphosed rocks.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 380; Campbell, I. (1936), On the occurrence of sillimanite and staurolite in Grand Canyon, Grand Canyon Nat. Hist. Assoc. Bull. 5: 17-22; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 102.]
  		•  Stishovite (TL)
    SiO
     
    2
    Type Locality: Meteor Crater (Barringer Crater), Winslow, Coconino Co., Arizona, USA
    Description: Occurs in shock-impact metamorphosed Coconino Sandstone with coesite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 383; Chao, E.C.T., et al (1962), Stishovite, a very high pressure new mineral from Meteor Crater, AZ, Jour. Geophys. Res.: 67: 419-421; Fahey, J.J. (1964), Recovery of coesite and stishovite from Coconino Sandstone of Meteor Crater, AZ, Am.Min.: 49: 1643-1647; Bohn, E. & W. Stöber (1966), Coesit und Stishovit als isolierte natürliche Mineralien, Neues Jahrb. Min.: 89-96; Gigl, P.D. & F. Dachille (1968), Effect of pressure and temperature on the reversal transitions of stishovite, Meteorites: 4: 123-136; J. Geophys. Res. 67 (1962), 419.]
  		•  Sulphur
    S
     
    8
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Taenite
    (Fe,Ni)
    Reference: [Space Science Reviews, Volume 14, Issue 6, pp.758-831]
  		•  Talc
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Description: Occurs in tremolite-talc dikes in the Vishnu Schist.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 401; Clark, M.D. (1979), Geology of the older Precambrian rocks of the Grand Canyon, Part III. Petrology of mafic schists and amphibolites, Precambrian Research: 8: 277-302.]
  		•  Tangeite
    CaCu[OH|VO
     
    4
    		]
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 147, 150, 296, 311, 405, 414; Wenrich, K.J. & H.B. Sutphin (1989), Lithotectonic setting necessary for formation of a uranium-rich, solution-collapse breccia-pipe, Grand Canyon region, AZ, USGS Open File Rept. 89-0173.]
  		•  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.]
  		•  Tenorite
    CuO
    Reference: [Copper Handbook 1911]
  		•  Tetrataenite
    FeNi
    Description: Sparse.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 394.]
  		•  Thenardite
    Na
     
    2
    		SO
     
    4
    Description: Occurs as coatings on basaltic lavas.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 394.]
  		•  Topaz
    Al
     
    2
    		[(F,OH)
     
    2
    		|SiO
     
    4
    		]
    Habit: Imperfect crystals to 0.4 mm long
    Description: Occurs in segregations in small amounts.
    Reference: [Robinson, Henry H. (1913), The San Franciscan Volcanic Field, AZ, USGS PP 76: 110-112.]
  		•  Torbernite
    Cu(UO
     
    2
    		)
     
    2
    		(PO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    Reference: [No reference listed]
  		•  Tremolite
    ☐[Ca
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Description: Occurs in tremolite-talc dikes in the Vishnu Schist.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 401; Clark, M.D. (1979), Geology of the older Precambrian rocks of the Grand Canyon, Part III. Petrology of mafic schists and amphibolites, Precambrian Research: 8: 277-302.]
  		•  Troilite
    FeS
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 176,199; Frondel, C. & U.B. Marvin (1967a), Lonsdaleite, a new hexagonal polymorph of diamond. Nature: 214: 587-589.]
  		•  Tyuyamunite
    Ca(UO
     
    2
    		)
     
    2
    		[VO
     
    4
    		]
     
    2
    		 · 5-8H
     
    2
    		O
    Reference: [No reference listed]
    Site Photo
    Ridenour Mine, Vulcans Throne, Coconino Co., Arizona, USA
    © Tony Peterson
  		•  Umohoite
    (UO
     
    2
    		)MoO
     
    4
    		·4H
     
    2
    		O
    Reference: [No reference listed]
  		•  Uraninite
    UO
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 295, 407-408; Holland, H.D., et al (1958), The use of leachable uranium in geochemical prospecting on the Colorado Plateau-II, the distribution of leachable uranium in surface samples in the vicinity of orebodies, Econ.Geol.: 53: 190-209; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 35.]
  		•  Uraninite
    var: Pitchblende
    UO
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 289; Maucher, A. & G. Rehwald (1961), Bildkartei der Erzmikroskopie. Umschau Verlag, Frankfurt am Main.]
  		•  Uranocircite
    Ba(UO
     
    2
    		)
     
    2
    		[PO
     
    4
    		]
     
    2
    		 · 10H
     
    2
    		O
    Description: Occurs with meta-uranocircite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 407-408; Austin, S.R. (1964), Mineralogy of the Cameron area, Coconino Co., AZ, US Atomic Energy Comm. RME 99. Tech Inf. Serv., Oak Ridge, TN: 99.]
  		•  Uranophane
    Ca(UO
     
    2
    		)
     
    2
    		[HSiO
     
    4
    		]
     
    2
    		 · 5H
     
    2
    		O
    Description: Minor amounts in uranium ores in Shinarump Conglomerate, in paleostream channels & in Chinle Formation in sandy portions of mounds.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 407-408; Holland, H.D., et al (1958), The use of leachable uranium in geochemical prospecting on the Colorado Plateau-II, the distribution of leachable uranium in surface samples in the vicinity of orebodies, Econ.Geol.: 53: 190-209.]
  		•  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..]
  		•  Vanadinite
    Pb
     
    5
    		[Cl|(VO
     
    4
    		)
     
    3
    		]
    Colour: Brown
    Description: Hollow incrustation pseudomorphs (epimorphs ?) after scalenohedral calcite crystals; also simply incrusting calcite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 410; Frondel, C. (1935), Catalog of mineral pseudomorphs in the American Museum, Bull.Amer.Mus.Nat.Hist. 67.]
  		•  Vanmeersscheite
    U
    4+
     
    		(UO
     
    2
    		)
     
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    		 · 4H
     
    2
    		O
    Habit: Scaly crusts
    Colour: Bright yellow
    Description: Occurs as scaly crusts coating fractures that cut sandstone impregnated with carbon.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 412.]
  		•  Vésigniéite
    BaCu
     
    3
    		[OH|VO
     
    4
    		]
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 147, 150, 296, 311, 405, 414; Wenrich, K.J. & H.B. Sutphin (1989), Lithotectonic setting necessary for formation of a uranium-rich, solution-collapse breccia-pipe, Grand Canyon region, AZ, USGS Open File Rept. 89-0173.]
  		•  Volborthite
    Cu
     
    3
    		[(OH)
     
    2
    		|V
     
    2
    		O
     
    7
    		] · 2H
     
    2
    		O
    Reference: [Testing at University of Arizona. Most specimens labelled Tangeite are actually Volborthite.]
    Site Photo
    Ridenaur Mine (Ridenour Mine), Prospect Canyon District, Coconino Co., Arizona, USA
    © Rob Lavinsky
  		•  Voltaite
    K
     
    2
    		Fe
    2+
    5
    		Fe
    3+
    3
    		Al[SO
     
    4
    		]
     
    12
    		 · 18H
     
    2
    		O
    Reference: [Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544.]
  		•  'Wad'
    Reference: [No reference listed]
  		•  Wulfenite
    Pb[MoO
     
    4
    		]
    Reference: [Gornitz, V. (2004), Grand Canyon Uranium: The Orphan Mine, Mineral News: 20(6): 7.]
  		•  Wupatkiite (TL)
    (Co,Mg,Ni)Al
     
    2
    		(SO
     
    4
    		)
     
    4
    		·22H
     
    2
    		O
    Type Locality: Cameron, Cameron District, Coconino Co., Arizona, USA
    Reference: [MinMag 59:553]
    Site Photo
    Cameron, Cameron District, Coconino Co., Arizona, USA
    © DV Minerals
  		•  Wüstite
    FeO
    Description: Occurs as an alteration product of barringtonite and schreibersite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 129, 273, 427.]
  		•  Zeunerite
    Cu(UO
     
    2
    		)
     
    2
    		(AsO
     
    4
    		)
     
    2
    		·12H
     
    2
    		O
    Habit: Exceptional crystals to ¼ inch on edge (0.8 cm)
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 102, 162, 297, 429; Leicht, W.C. (1971), Minerals of the Grandview mine, Min.Rec.: 2: 214-221.]
    Site Photo
    Grand View Mine (Last Chance Mine; No. 1 Pat claim 3591; No. 5 Pat claim 3592a; No. 4 Pat claim 3592a; Canyon Copper Mine; Grand Canyon Mine), Cape Royal, Horseshoe Mesa, Grand Canyon National Park, Grandview District, Coconino Co., Arizona, USA
    © Michael Cline
  		•  Zippeite
    K
     
    4
    		(UO
     
    2
    		)
     
    6
    		[(OH)
     
    10
    		|(SO
     
    4
    		)
     
    3
    		] · 4H
     
    2
    		O
    Reference: [No reference listed]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Habit: Anhedral crystals to 0.4 mm long
    Description: Noticeably abundant in segregations in riebeckite-soda granite porphyry.
    Reference: [Robinson, Henry H. (1913), The San Franciscan Volcanic Field, AZ, USGS PP 76: 110-112.]


    237 entries listed. 199 valid minerals. 12 type localities (valid minerals).

    Localities in this Region:
    USA
     
    • Arizona
      • Coconino Co.
        • Angell quadrangle
        • Ash Fork quadrangle
        • Aubrey Cliffs
        • Bellemont quadrangle
        • Bill Williams Mountain quadrangle
        • Breccia Pipe District
        • Cameron-Leupp area
            • Black Peak
        • Cameron quadrangle
        • Coconino National Forest
        • Dutton Hill quadrangle
        • Eagle Nest Mountain quadrangle
        • Ebert Mountain quadrangle
        • Fitzgerald Hill
          • Elden Mountain area
        • Flagstaff East quadrangle
        • Flagstaff West quadrangle
          • Willaha
        • Garland Prarie Quadrangle
        • Grand Canyon
          • South Rim
        • Grand Canyon area
              • Hakatai Canyon
            • Nautiloid Canyon
          • South Rim
            • Orphan District
              • Grand Canyon Village
          • Bass Ferry vicinity
        • Grandview District
          • Grand Canyon National Park
            • Horseshoe Mesa
              • Cape Royal
        • Gray Mountain area
        • Gunsight Point
        • Happy Jack quadrangle
        • Havasupai Indian Reservation
        • Hearst Mountain quadrangle
        • Heber District
        • Horse Trap Mesa quadrangle
        • Humphreys Peak quadrangle
        • Kaibab
        • Kaibab National Forest
        • Kendrick Peak quadrangle
        • Kinnikinick Lake quadrangle
        • Matterhorn map area
        • May Tank Pocket
        • Mormon Lake quadrangle
        • Mormon Mountain quadrangle
        • Navajo-Hopi joint use area
          • Cameron District
            • Tuba City
        • Parks quadrangle
        • Picacho Butte quadrangle
        • Prospect Canyon District
        • Red Butte
          • Flagstaff area
          • O'Leary Peak
          • O'Leary Peak quadrangle
          • Sunset Crater East quadrangle
        • Shinumo quadrangle
        • Stoneman Lake quadrangle
        • Tuba City East quadrangle
        • Valle quadrangle
        • Vulcans Throne
        • Warm Springs District
        • White Horse Hills quadrangle
        • White Mesa District
          • Paria River
            • Lee's Ferry
        • Williams quadrangle
        • Wing Mountain quadrangle
        • Winona quadrangle
        • Winslow
          • Meteor Crater and vicinity

    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!
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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: 10th Nov 2009 05:52:42