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Twin Buttes, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA

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 Map Reference: 31°54'9"N , 111°3'36"W

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


Mineral List:
  		•  Actinolite
    ☐Ca
     
    2
    		(Mg,Fe
    2+
     
    		)
     
    5
    		(Si
     
    8
    		O
     
    22
    		)(OH)
     
    2
    Description: Occurs in skarns & tactites.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 101.]
  		•  Andradite
    Ca
     
    3
    		Fe
    3+
    2
    		[SiO
     
    4
    		]
     
    3
    Description: Zones to 200 feet wide in limestone.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 111; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 94.]
  		•  Anhydrite
    CaSO
     
    4
    Description: Hypothermal.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: : 113.]
  		•  Antigorite
    (Mg,Fe
    2+
     
    		)
     
    3
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    5
    		]
    Reference: [MRDS database Dep. ID file #10103756, MRDS ID #M050530.]
  		•  'Apatite'
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 117.]
  		•  'Apophyllite'
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 268, 385.]
  		•  Aurichalcite
    (Zn,Cu)
     
    5
    		[(OH)
     
    3
    		|CO
     
    3
    		]
     
    2
    Description: Occurs in fissures in garnetized limestone.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 123.]
  		•  Biotite
    Reference: [MRDS database Dep. ID file #10103756, MRDS ID #M050530.]
  		•  Bornite
    Cu
     
    5
    		FeS
     
    4
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: : 142.]
  		•  Brochantite
    Cu
     
    4
    		[(OH)
     
    6
    		|SO
     
    4
    		]
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: : 146.]
  		•  Calcite
    CaCO
     
    3
    Habit: Simply-terminated, rhombic
    Colour: Creamy-white (egg shell)
    Description: Crusts several inches thick comprised of crystals.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 152.]
  		•  Caledonite
    Cu
     
    2
    		Pb
     
    5
    		[(OH)
     
    6
    		|CO
     
    3
    		|(SO
     
    4
    		)
     
    3
    		]
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 153.]
  		•  Cerussite
    PbCO
     
    3
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 158.]
  		•  Chalcocite
    Cu
     
    2
    		S
    Description: Occurs in secondarily enriched ores.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 163.]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 166; Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 20.]
  		•  'Chlorite Group'
    Description: Variety penninite.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 324.]
  		•  Chrysocolla
    (Cu,Al)
     
    2
    		H
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    		·nH
     
    2
    		O
    Description: Large masses.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: : 146, 174.]
  		•  Clinochlore
    (Mg,Fe
    2+
     
    		)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 176.]
  		•  Copper
    Cu
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 268, 385.]
    Site Photo
    Twin Buttes Mine (Twin Buttes Open Pit Mine), Twin Buttes, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA
    © 2004 D. Schläfli
  		•  Cuprite
    Cu
     
    2
    		O
    Description: Occurs in oxidized ores.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 146, 196.]
  		•  Descloizite
    Pb(Zn,Cu)[OH|VO
     
    4
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 201.]
  		•  Digenite
    Cu
     
    9
    		S
     
    5
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 204.]
  		•  Diopside
    CaMg[Si
     
    2
    		O
     
    6
    		]
    Description: Occurs in skarns.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 205.]
  		•  Dolomite
    CaMg(CO
     
    3
    		)
     
    2
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 207.]
  		•  Duftite
    PbCu[OH|AsO
     
    4
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 208.]
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Description: Occurs in tactites and skarns and with laumontite in calcite veinlets.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 215, 272.]
  		•  Ferrimolybdite
    Fe
     
    2
    		[MoO
     
    4
    		]
     
    3
    		 · nH
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 220.]
  		•  Fluorite
    CaF
     
    2
    Reference: [MRDS database Dep. ID file #10103756, MRDS ID #M050530.]
  		•  Forsterite
    Mg
     
    2
    		[SiO
     
    4
    		]
    Description: Occurs in garnetite; in skarns or tactites where altered limestones were relatively pure.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 225-226.]
  		•  Galena
    PbS
    Reference: [MRDS database Dep. ID file #10103756, MRDS ID #M050530.]
  		•  'Garnet Group'
    X
     
    3
    		Z
     
    2
    		(TO
     
    4
    		)
     
    3
    		 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V)
    Reference: [Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 138 (Table 4); Ransome (1922): 425-427; Wilson, E.D. (1941): 44-46; Dale, et al (1960): 85-92; Arizona Bureau of Mines file data.]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Description: Abundant in oxidized capping.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 233.]
  		•  Grossular
    Ca
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Description: Occurs in skarns.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 240.]
  		•  Hedenbergite
    CaFe
    2+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: [MRDS database Dep. ID file #10039591, MRDS ID #M050383.]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 246.]
  		•  Hemimorphite
    Zn
     
    4
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 248.]
  		•  Jarosite
    KFe
    3+
     
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 262.]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Description: Product of hydrothermal alteration.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 266.]
  		•  Kinoite
    Ca
     
    2
    		Cu
     
    2
    		(H
     
    2
    		O)
     
    2
    		[Si
     
    3
    		O
     
    10
    		]
    Habit: Micro-crystals; crystals to 0.5 cm.
    Description: Occurs as crystals with associated species in wollastonite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 268, 385.]
  		•  Laumontite
    CaAl
     
    2
    		Si
     
    4
    		O
     
    12
    		·4H
     
    2
    		O
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 272.]
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 286.]
  		•  Marcasite
    FeS
     
    2
    Description: Occurs as an alteration product of pyrrhotite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 290; Webber, B.N. (1929), Marcasite in the contact metamorphic ore deposits of the Twin Buttes District, Pima Co., AZ, Econ.Geol.: 24: 304-310; Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. Mines Bull. 153: 24.]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 298.]
  		•  Molybdenite
    MoS
     
    2
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 302.]
  		•  Montmorillonite
    (Na,Ca)
     
    0.33
    		(Al,Mg)
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Description: A product of hydrothermal alteration.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 305.]
  		•  Mottramite
    Pb(Cu,Zn)[OH|VO
     
    4
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 307.]
  		•  Nontronite
    Na
     
    0.3
    		Fe
     
    2
    		(Si,Al)
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·nH
     
    2
    		O
    Description: Occurs in the supergene zone in collapse breccias.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 314.]
    Site Photo
    Twin Buttes Mine (Twin Buttes Open Pit Mine), Twin Buttes, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USA
    © Arliguie M
  		•  Palygorskite
    (Mg,Al)
     
    5
    		(Si,Al)
     
    8
    		O
     
    20
    		(OH)
     
    2
    		·8H
     
    2
    		O
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 317.]
  		•  Phlogopite
    KMg
     
    3
    		[(OH,F)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 326.]
  		•  Plumbojarosite
    PbFe
    3+
    6
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    4
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 332.]
  		•  Powellite
    Ca[MoO
     
    4
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 334.]
  		•  Pyrite
    FeS
     
    2
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 341.]
  		•  Pyrolusite
    MnO
     
    2
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 343.]
  		•  Pyrrhotite
    Fe
     
    7
    		S
     
    8
    		, (-4M), also given as Fe
     
    1-x
    		S (x = 0 - 0.2)
    Description: Occurs as a primary mineral.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 346; Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 20.]
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 353.]
  		•  Rhodonite
    MnSiO
     
    3
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 354.]
  		•  Rutile
    TiO
     
    2
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 359.]
  		•  Scheelite
    Ca[WO
     
    4
    		]
    Description: Occurs in contact zones.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 363.]
  		•  Schorl
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 400.]
  		•  'Sericite'
    Reference: [MRDS database Dep. ID file #10103756, MRDS ID #M050530.]
  		•  'Serpentine Group'
    D
     
    2
    		[Si
     
    2
    		O
     
    5
    		](OH)4 + or - nH
     
    2
    		O
    Description: Occurs in metamorphic rocks.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 368.]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 377.]
  		•  Stibnite
    Sb
     
    2
    		S
     
    3
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 382.]
  		•  Stringhamite
    CaCu[SiO
     
    4
    		] · H
     
    2
    		O
    Description: Occurs with associated species in wollastonite.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 268, 385.]
  		•  Talc
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 388.]
  		•  Tenorite
    CuO
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 391.]
  		•  Tetrahedrite
    (Cu,Fe,Ag,Zn)
     
    12
    		Sb
     
    4
    		S
     
    13
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 393.]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 397.]
  		•  Topaz
    Al
     
    2
    		[(F,OH)
     
    2
    		|SiO
     
    4
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 399.]
  		•  Tremolite
    ☐[Ca
     
    2
    		][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Description: Occurs in tactites and skarns.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 402.]
  		•  Turquoise
    Cu(Al,Fe
    3+
     
    		)
     
    6
    		[(OH)
     
    4
    		|(PO
     
    4
    		)
     
    2
    		]
     
    2
    		 · 4H
     
    2
    		O
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 405.]
  		•  Vanadinite
    Pb
     
    5
    		[Cl|(VO
     
    4
    		)
     
    3
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 411.]
  		•  Vesuvianite
    Ca
     
    10
    		(Mg,Fe)
     
    2
    		Al
     
    4
    		Si
     
    9
    		O
     
    34
    		(OH)
     
    4
    Description: Occurs in skarns & tactites.
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 414.]
  		•  Wollastonite
    Ca[SiO
     
    3
    		]
    Description: Occurs in skarns & tactites.
    Reference: [Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 268, 385, 424.]
  		•  Wulfenite
    Pb[MoO
     
    4
    		]
    Reference: [Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 426.]


    75 entries listed. 68 valid minerals.

    Localities in this Region:
    USA
     
    • Arizona
      • Pima Co.
        • Sierrita Mts
          • Pima District (Olive District; Mineral Hill District; Twin Buttes District)
            • Twin Buttes

    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: 25th Nov 2009 20:13:49