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Postmasburg manganese field, Northern Cape Province, South Africa

StandardDetailedBy ChemistryMineral Photos (13)Search GoogleMineral Report for Region

References:
Economic Geology (1996): 91: 1414-1434.

Mineralogical Magazine (1997): 61: 213-231.




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

Group 2 - Sulphides and Sulfosalts
  		• Alabandite2.CD.10
    Mn
    2+
     
    		S
    Group 4 - Oxides and Hydroxides
  		• Bixbyite4.CB.10
    (Mn
    3+
     
    		,Fe
    3+
     
    		)
     
    2
    		O
     
    3
  		• Cryptomelane4.DK.10
    K(Mn
    4+
     
    		,Mn
    2+
     
    		)
     
    8
    		O
     
    16
  		• Diaspore4.FD.10
    AlO(OH)
      var: Mangan-diaspore4.FD.10
    AlO(OH)
  		• Gibbsite4.FE.10
    Al(OH)
     
    3
  		• Hematite4.CB.05
    Fe
     
    2
    		O
     
    3
  		• Lithiophorite4.FE.25
    (Al,Li)MnO
     
    2
    		(OH)
     
    2
  		• Manganite4.FD.15
    Mn
    3+
     
    		O(OH)
  		• Opal4.DA.10
    SiO
     
    2
    		·nH
     
    2
    		O
  		• Pyrolusite4.DB.05
    MnO
     
    2
  		• Ramsdellite4.DB.15a
    Mn
    4+
     
    		O
     
    2
  		• Romanèchite4.DK.10
    (Ba,H
     
    2
    		O)
     
    2
    		Mn
     
    5
    		O
     
    10
    Group 5 - Nitrates and Carbonates
  		• Calcite5.AB.05
    CaCO
     
    3
    Group 7 - Sulphates, Chromates, Molybdates and Tungstates
  		• Baryte7.AD.35
    BaSO
     
    4
    Group 8 - Phosphates, Arsenates and Vanadates
  		• Apatite-(CaOH)8.BN.05
    Ca
     
    5
    		[OH|(PO
     
    4
    		)
     
    3
    		]
  		• Gamagarite (TL)8.BG.05
    Ba
     
    2
    		(Fe
    3+
     
    		,Mn
    3+
     
    		)[OH|(VO
     
    4
    		)
     
    2
    		]
    Group 9 - Silicates
  		• Aegirine9.DA.25
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
  		• Amesite9.ED.15
    Mg
     
    2
    		Al[(OH)
     
    4
    		|AlSiO
     
    5
    		]
  		• Banalsite9.FA.60
    BaNa
     
    2
    		[Al
     
    2
    		Si
     
    2
    		O
     
    8
    		]
     
    2
  		• Braunite9.AG.05
    Mn
    2+
     
    		Mn
    3+
    6
    		[O
     
    8
    		|SiO
     
    4
    		]
  		• Ephesite9.EC.20
    NaLiAl
     
    2
    		[(OH)
     
    2
    		|Al
     
    2
    		Si
     
    2
    		O
     
    10
    		]
  		• Kaolinite9.ED.05
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
  		• Pyrophyllite9.EC.10
    Al
     
    2
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
  		• Zunyite9.BJ.55
    Al
     
    13
    		Si
     
    5
    		O
     
    20
    		(OH,F)
     
    18
    		Cl
    Unclassified Minerals
  		• 'Manganbixbyite'-
  		• 'Partridgeite'-
    Mn
     
    2
    		O
     
    3
  		• 'Psilomelane'-


    28 entries listed. 25 valid minerals.

    Localities in this Region:
    South Africa
     
    • Northern Cape Province
      • Postmasburg manganese field

    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 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: 1st Nov 2009 22:25:32