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Black Cloud Mine (Black Cloud pegmatite; Spillman Prospect), Teller Co., Colorado, USA

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Ref.: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1); Rocks & Min.: 63:457.

A pegmatite mine located in the NE¼ NE¼ sec. 9, T.13S., R.70W.

Mineralization is a zoned pegmatite body in granite. Core zone: quartz; outer zone: quartz-feldspar-fluorite.

Workings include a large open cut with 2 benches.





 Map Reference: 38°56'18"N , 105°12'48"W

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



Mineral List:
  		•  Albite
    Na[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Rocks & Minerals: 63: 457.]
  		•  Allanite-(Ce)
    {CaCe}{Al
     
    2
    		Fe
    2+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Rocks & Minerals: 63: 457.]
  		•  'Apatite'
    Reference: [Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1).]
  		•  Bastnäsite-(Ce)
    (Ce,La)[F|CO
     
    3
    		]
    Reference: [Rocks & Minerals: 63: 457.]
  		•  Bertrandite
    Be
     
    4
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: [Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1).]
  		•  Biotite
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Cassiterite
    SnO
     
    2
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  Cerianite-(Ce)
    (Ce
    4+
     
    		,Th)O
     
    2
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
  		•  'Chlorite Group'
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Columbite
    (Fe,Mn)(Nb,Ta)
     
    2
    		O
     
    6
    Reference: [Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1).]
  		•  'Fergusonite'
    Reference: [American Mineralogist (1984): 67: 184.]
  		•  Fluocerite-(Ce)
    (Ce,La)F
     
    3
    Reference: [Rocks & Minerals: 63: 457.]
    Site Photo
    Black Cloud Mine (Black Cloud pegmatite; Spillman Prospect), Teller Co., Colorado, USA
    © Leon Hupperichs
  		•  Fluorite
    CaF
     
    2
    Reference: [Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1); Rocks & Min.: 63:457.]
    Site Photo
    Black Cloud Mine (Black Cloud pegmatite; Spillman Prospect), Teller Co., Colorado, USA
     
  		•  'Gadolinite'
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Kaolinite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Limonite
    FeO(OH)·nH
     
    2
    		O
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: [Rocks & Minerals: 63: 457.]
  		•  Microlite
    (Ca,Na)
     
    2
    		Ta
     
    2
    		O
     
    6
    		(O,OH,F)
    Reference: [Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1).]
  		•  'Monazite'
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Monazite-(Ce)
    (Ce,La,Nd,Th)PO
     
    4
    Reference: [Minerals of Colorado (1997) Eckels, E. B.]
    Site Photo
    Black Cloud Mine (Black Cloud pegmatite; Spillman Prospect), Teller Co., Colorado, USA
    © Arliguie M
  		•  Opal
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Pyrochlore
    (Ca,Na)
     
    2
    		Nb
     
    2
    		O
     
    6
    		(OH,F)
    Reference: [Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1).]
  		•  Quartz
    SiO
     
    2
    Reference: [Rocks & Minerals: 63: 457.]
  		•  Samarskite-(Y)
    (Y,Fe
    3+
     
    		,Fe
    2+
     
    		,U,Th,Ca)
     
    2
    		(Nb,Ta)
     
    2
    		O
     
    8
    Reference: [Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1).]
    Site Photo
    Black Cloud Mine (Black Cloud pegmatite; Spillman Prospect), Teller Co., Colorado, USA
    © John Sobolewski
  		•  'Sericite'
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Synchysite-(Y)
    Ca(Y,Ce)[F|(CO
     
    3
    		)
     
    2
    		]
    Reference: [Minerals of Colorado (1997) E.B. Eckels]
  		•  Tantalite
    (Fe,Mn)(Ta,Nb)
     
    2
    		O
     
    6
    Reference: [Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 31 (Table A-1).]
  		•  Thorite
    (Th,U)[SiO
     
    4
    		]
    Reference: [Rocks & Minerals: 63: 457.]
  		•  Törnebohmite-(Ce)
    (Ce,La)
     
    2
    		Al(SiO
     
    4
    		)
     
    2
    		OH
    Reference: [Rocks & Minerals: 63: 457.]
  		•  'Wad'
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Xenotime-(Y)
    YPO
     
    4
    Reference: [American Mineralogist (1982): 67: 184.]
  		•  Yttrotantalite-(Y)
    (Y,Ca,U
    4+
     
    		,Fe
    2+
     
    		)
     
    2
    		(Ta,Nb)
     
    2
    		O
     
    8
    Reference: [Seaman (1976) Pegmatite Minerals of the World.]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [Rocks & Minerals: 63: 457.]


    34 entries listed. 23 valid minerals.

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in Colorado, 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: 29th Nov 2009 03:12:00