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Pulacayo Mine (Huanchaca mine), Huanchaca, Antonio Quijarro Province, Potosí Department, Bolivia

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Sometimes called Huanchaca Mine, although strictly speaking Huanchaca was the neighboring settlement where the ore beneficiation plant was located. Located 20km ENE of town of Uyuni. Most veins, including the Veta San Tomas, Veta Corpus, Veta Pacamayo, Veta Animas, are emplaced in propylitized, sericitized, silicified and pyritized portions of a 4km wide dacitic stock. The Veta Tajo cuts the silicified and pyritized red clay country rock. Discovered in 1833. Workings reached 1,100m below the surface, and became increasingly difficult due to the eruption of copious underground hot springs with 60 degree C water and large quantities of carbon dioxide gas. By the 1990s most of the underground workings had been abandoned and only a small amount of gypsum was being produced, and some reworking of the vast old dump material.



References:
- Dana 7:I: 380, 435
- Rocks & Min.: 17:129
- Min.Rec.: 32:477.
- Econ Geol (1993) 88:697-700
- Sillitoe, R.H., Steele, G.B., Thompson, J.F.H., and Lang, J.R. (1998): Advanced argillic lithocaps in the Bolivian tin-silver belt. Mineralium Deposita 33, 539-546.





 Map Reference: 20°23'21"S , 66°41'53"W

This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.



Mineral List:
  		•  Alunite
    KAl
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Reference: [Econ Geol (1993) 88:697-700]
  		•  Andorite
    PbAgSb
     
    3
    		S
     
    6
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Anhydrite
    CaSO
     
    4
    Reference: [MinRec 32:477]
  		•  Aragonite
    CaCO
     
    3
    Reference: []
  		•  Arsenolite
    As
     
    2
    		O
     
    3
    Reference: [MinRec 32:477]
  		•  Arsenopyrite
    FeAsS - (Fe
     
    0.90
    		Co
     
    0.10
    		)AsS
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz); Econ Geol (1993) 88:697-700]
  		•  Augite
    (Ca,Na)(Mg,Fe
    2+
     
    		,Al,Fe
    3+
     
    		,Ti)[(Si,Al)
     
    2
    		O
     
    6
    		]
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Baryte
    BaSO
     
    4
    Reference: [Econ Geol (1993) 88:697-700]
  		•  Biotite
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Boulangerite
    Pb
     
    5
    		Sb
     
    4
    		S
     
    11
    Reference: []
  		•  Bournonite
    PbCuSbS
     
    3
    Reference: [Econ Geol (1993) 88:697-700]
  		•  Calcite
    CaCO
     
    3
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  'Chalcedony'
    Reference: [Sillitoe, R.H., Steele, G.B., Thompson, J.F.H., and Lang, J.R. (1998): Mineralium Deposita 33, 539-546.]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [Econ Geol (1993) 88:697-700]
  		•  Chalcostibite
    CuSbS
     
    2
    Reference: [Gramaccioli, C. M., 1985. Conoscere i minerali. I solfosali. Istituto Geografico De Agostini, Novara, 96 pp]
  		•  'Chlorite Group'
    Reference: []
  		•  Copper
    Cu
    Reference: [Osvaldo R. Arce Burgoa (2007) Guia a los Yacimientos Metaliferos de Bolivia. (Minera San Cristobal S.A. & Empresa Minera Unificada S.A., La Paz)]
  		•  Diaphorite
    Ag
     
    3
    		Pb
     
    2
    		Sb
     
    3
    		S
     
    8
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Enargite
    Cu
     
    3
    		AsS
     
    4
    Reference: [MinRec 32:477]
  		•  Freibergite
    (Ag
     
    4+2x
    		Cu
     
    2-2x
    		)[(Cu, Ag)
     
    4
    		(Fe, Zn)
     
    2
    		]Sb
     
    4
    		S
     
    12
    		S
     
    1-x
    		 (0 < x < 1)
    Reference: [Min.Rec.: 32:477; Rocks & Min.: 17:129.; Econ Geol (1993) 88:697-700]
  		•  Galena
    PbS
    Reference: [MinRec 32:477]; Econ Geol (1993) 88:697-700]
  		•  Geocronite
    Pb
     
    14
    		(Sb,As)
     
    6
    		S
     
    23
    Reference: [MinRec 32:477]
  		•  Gypsum
    Ca[SO
     
    4
    		] · 2H
     
    2
    		O
    Reference: [MinRec 32:477]; Econ Geol (1993) 88:697-700]
  		•  Jamesonite
    Pb
     
    4
    		FeSb
     
    6
    		S
     
    14
    Reference: [MinRec 32:477]; Econ Geol (1993) 88:697-700]
  		•  Jarosite
    KFe
    3+
     
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Lammerite
    Cu
     
    3
    		[AsO
     
    4
    		]
     
    2
    Reference: [W. Stoll collection (gift from Franz Lammer)]
    Site Photo
    Pulacayo Mine (Huanchaca mine), Huanchaca, Antonio Quijarro Province, Potosí Department, Bolivia
     
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Marcasite
    FeS
     
    2
    Reference: [Econ Geol (1993) 88:697-700]
  		•  Metastibnite
    Sb
     
    2
    		S
     
    3
    Reference: [MinRec 32:477]
  		•  Miargyrite
    AgSbS
     
    2
    Reference: [MinRec 32:477]
  		•  Pyrargyrite
    Ag
     
    3
    		SbS
     
    3
    Reference: [MinRec 32:477]; Econ Geol (1993) 88:697-700]
  		•  Pyrite
    FeS
     
    2
    Reference: [MinRec 32:477]; Econ Geol (1993) 88:697-700]
  		•  Pyrophyllite
    Al
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: [Sillitoe, R.H., Steele, G.B., Thompson, J.F.H., and Lang, J.R. (1998): Mineralium Deposita 33, 539-546.]
  		•  Quartz
    SiO
     
    2
    Reference: [MinRec 32:477]; Econ Geol (1993) 88:697-700]
  		•  Quartz
    var: Amethyst
    SiO
     
    2
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Semseyite
    Pb
     
    9
    		Sb
     
    8
    		S
     
    21
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  'Sericite'
    Reference: [Econ Geol (1993) 88:697-700]
  		•  Silver
    Ag
    Reference: [Osvaldo R. Arce Burgoa (2007) Guia a los Yacimientos Metaliferos de Bolivia. (Minera San Cristobal S.A. & Empresa Minera Unificada S.A., La Paz)]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [MinRec 32:477]; Econ Geol (1993) 88:697-700]
  		•  Stephanite
    Ag
     
    5
    		SbS
     
    4
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Stibnite
    Sb
     
    2
    		S
     
    3
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz); Econ Geol (1993) 88:697-700]
  		•  Tennantite
    (Cu,Ag,Fe,Zn)
     
    12
    		As
     
    4
    		S
     
    13
    Reference: [MinRec 32:477]
  		•  Tetrahedrite
    (Cu,Fe,Ag,Zn)
     
    12
    		Sb
     
    4
    		S
     
    13
    Reference: [Econ Geol (1993) 88:697-700]
  		•  Wavellite
    Al
     
    3
    		[(OH,F)
     
    3
    		|(PO
     
    4
    		)
     
    2
    		] · 5H
     
    2
    		O
    Reference: [Salomon Rivas y Federico Ahlfeld (1998) Los Minerales de Bolivia y sus Parajes. (Santa Cruz)]
  		•  Wurtzite
    (Zn,Fe)S
    Reference: [MinRec 32:477]
  		•  Zinkenite
    Pb
     
    9
    		Sb
     
    22
    		S
     
    42
    Reference: [MinRec 32:477]


    47 entries listed. 41 valid minerals.

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