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Bultfontein Mine, Kimberley, Northern Cape Province, South Africa

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A diamond mine in a kimberlite pipe, closed in 2005.
Owned by DeBeers.



References:
- Dana 7:I:149
- Mathias, M., Siebert, J.C., and Rickwood, P.C. (1970): Some Aspects of the Mineralogy and Petrology of Ultramafic Xenoliths in Kimberlite. Contributions to Mineralogy and Petrology 26, 75-123.
- Mining Annual Review(1985):147
- Field, M., Stiefenhofer, J., Robey, J., and Kurszlaukis, S. (2008): Kimberlite-hosted diamond deposits of southern Africa: A review. Ore Geology Reviews 34, 33-75.





Mineral List:
  		•  Apophyllite-(KF)
    KCa
     
    4
    		[(F,OH)|Si
     
    8
    		O
     
    20
    		] · 8H
     
    2
    		O
    Reference: [Minerals of South Africa]
  		•  Armalcolite
    (Mg,Fe
    2+
     
    		)Ti
     
    2
    		O
     
    5
    Reference: [J. W. Anthony et al.: Handbook of Mineralogy, Vol. 3 (1997), 22]
  		•  Baryte
    BaSO
     
    4
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Diamond
    C
    Reference: [Dana 7:I:149.]
  		•  Diopside
    CaMg[Si
     
    2
    		O
     
    6
    		]
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Diopside
    var: Chromian Diopside
    (Ca,Cr)MgSi
     
    2
    		O
     
    6
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  'Garnet Group'
    X
     
    3
    		Z
     
    2
    		(TO
     
    4
    		)
     
    3
    		 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V)
    Reference: [Mathias, M., Siebert, J.C., and Rickwood, P.C. (1970): Contributions to Mineralogy and Petrology 26, 75-123.]
  		•  Hawthorneite (TL)
    BaMgTi
     
    3
    		Cr
     
    4
    		Fe
     
    4
    		O
     
    19
    Type Locality: Bultfontein Mine, Kimberley, Northern Cape Province, South Africa
    Reference: [Amer.Min.(1989), 74, 668-675; Minerals of South Africa]
  		•  Hypersthene
    (Fe,Mg)SiO
     
    3
    Reference: [Mathias, M., Siebert, J.C., and Rickwood, P.C. (1970): Contributions to Mineralogy and Petrology 26, 75-123.]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Lindsleyite (TL)
    (Ba,Sr)(Ti,Zr,Fe,Cr)
     
    21
    		O
     
    38
    Type Locality: Bultfontein Mine, Kimberley, Northern Cape Province, South Africa
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Mathiasite (TL)
    K(Ti,Cr,Fe,Mg,Zr)
     
    21
    		O
     
    38
    Type Locality: Bultfontein Mine, Kimberley, Northern Cape Province, South Africa
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Natrolite
    Na
     
    2
    		[Al
     
    2
    		Si
     
    3
    		O
     
    10
    		] · 2H
     
    2
    		O
    Reference: [Minerals of South Africa]
  		•  'Olivine'
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    4
    		]
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Perovskite
    CaTiO
     
    3
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Phlogopite
    KMg
     
    3
    		[(OH,F)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Potassicrichterite
    K[CaNa][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Rhodesite
    KHCa
     
    2
    		Si
     
    8
    		O
     
    19
    		·5H
     
    2
    		O
    Reference: [Minerals of South Africa]
  		•  Rutile
    TiO
     
    2
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Spinel
    MgAl
     
    2
    		O
     
    4
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Spinel
    var: Chromspinel
    Mg(Al,Cr
    3+
     
    		)
     
    2
    		O
     
    4
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: [S.E. Haggerty, J.R. Smyth, A.J. Erlank, R.S. Rickard, R.V. Danchin: Amer. Mineral. 68:494-505 (1983)]


    22 entries listed. 16 valid minerals. 3 type localities (valid minerals).

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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Jobs in South Africa 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: 28th Nov 2009 17:55:20