Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa

StandardDetailedBy ChemistryMineral Photos (436)MapsSearch Google

A manganese mine located near Hotazel in North Cape province. Owned by S.A. Manganese Armcor, Ltd. Started May, 1973.






References:
- Mining Annual Review (1985): 90

- Rocks & Minerals (1986): 61: 10

- Mineralogical Record (1989): 20(5): 389.

- Von Bezing, K. L. et al. (1991): The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302.

- American Mineralogist (1992): 77: 1292-1300

- Gutzmer, J. & Cairncross, B. (1993): Recent discoveries from the Wessels mine South Africa. Mineralogocal Record 24 (5): 365-368

-American Mineralogist (1993): 78: 1082-1087

- von Bezing, L. & Gutzmer, J. (1994): Das Kalahari Manganerzfeld und seine Mineralien (II). Mineralien-Welt, 5(5), 41-59.

- Cairncross, B., Beukes, N. and Gutzmer, J. (1997): The manganese adventure – the South African manganese fields. Associated Ore & Metal Corporation Limited, Johannesburg, Republic of South Africa, 236 pp.

- Gutzmer, J. & Cairncross, B. (2001): Seltene Mineralien aus dem Kalahari-Manganerzfeld, Südafrika. Lapis, 26(10), 32-42.

- Gutzmer, J. & Cairncross, B. (2002): Spectacular Minerals from the Kalahari Manganese Field, South Africa. Rocks & Minerals, 77(2), 94-107.

- Gnos E., Armbruster T., Villa I. M. (2003): Norrishite, K(Mn3+2Li)Si4O10(O)2, an oxymica associated with sugilite from the Wessels Mine, South Africa: Crystal chemistry and 39Ar-40Ar dating. American Mineralogist: 88: 189-194.





 Map Reference: 27°12'S , 22°58'E

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:
  		•  Aegirine
    NaFe
    3+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Afwillite
    Ca
     
    3
    		[HSiO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    Description: Less than 50 specimens preserved
    Reference: [Minerals of South Africa]
  		•  Åkermanite
    Ca
     
    2
    		Mg[Si
     
    2
    		O
     
    7
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Andradite
    Ca
     
    3
    		Fe
    3+
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Andradite
    var: Hydroandradite
    Ca
     
    3
    		Fe
    3+
    2
    		(SiO
     
    4
    		)
     
    3-x
    		(OH)
     
    4x
    Description: Late-stage hydrothermal orange-red octahedral cystals, associated with henritermierite and earlier calcite, in cracks and vugs of hematite-haussmannite ore.
    Reference: [Minerals of South Africa]
  		•  Apophyllite-(KOH)
    KCa
     
    4
    		[(OH,F)|Si
     
    8
    		O
     
    20
    		] · 8H
     
    2
    		O
    Reference: [Gutzmer, J. & Cairncross, B. (1993): Recent discoveries from the Wessels mine South Africa. Mineralogocal Record 24 (5): 365-368]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Aragonite
    CaCO
     
    3
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Azurite
    Cu
     
    3
    		[OH|CO
     
    3
    		]
     
    2
    Reference: []
  		•  Baryte
    BaSO
     
    4
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © 2001 John H. Betts
  		•  Bementite
    Mn
     
    5
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    6
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Bixbyite
    (Mn
    3+
     
    		,Fe
    3+
     
    		)
     
    2
    		O
     
    3
    Reference: [Mineralogical Record (2001) 32:252]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Michael C. Roarke
  		•  Brandtite
    Ca
     
    2
    		(Mn
    2+
     
    		,Mg)[AsO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    Reference: [MinRec 22:480]
  		•  Braunite
    Mn
    2+
     
    		Mn
    3+
    6
    		[O
     
    8
    		|SiO
     
    4
    		]
    Habit: Crystals to 1cm
    Colour: Black
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302; Min Rec (2009) 40:78]; Mineralogical Record (2001) 32:252]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		• Brucite
    Mg(OH)
     
    2
    Reference: [Minerals of South Africa]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Bultfonteinite
    Ca
     
    2
    		[F|HSiO
     
    4
    		] · H
     
    2
    		O
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
     
  		•  Calcite
    CaCO
     
    3
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]; Mineralogical Record (2001) 32:252]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Calcite
    var: Manganoan Calcite
    (Ca,Mn)CO
     
    3
    Reference: []
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Caryopilite
    (Mn,Mg)
     
    3
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Minerals of South Africa]
  		•  Celestine
    SrSO
     
    4
    Reference: [No reference listed]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © namibiaminerals
  		•  Chamosite
    (Fe
    2+
     
    		,Mg)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Minerals of South Africa]
  		•  Charlesite
    Ca
     
    6
    		(Al,Si)
     
    2
    		[(OH,O)
     
    12
    		|B(OH)
     
    4
    		|(SO
     
    4
    		)
     
    2
    		] · 26H
     
    2
    		O
    Reference: [Minerals of South Africa]
  		•  Clinochlore
    (Mg,Fe
    2+
     
    		)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Clinochrysotile
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Clinozoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [No reference listed]
  		•  Copper
    Cu
    Reference: [No reference listed]
  		•  Datolite
    CaB[OH|SiO
     
    4
    		]
    Colour: flesh pink
    Reference: [Gutzmer, J. & Cairncross, B. (1993): Recent discoveries from the Wessels mine South Africa. Mineralogocal Record 24 (5): 365-368]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Diaspore
    AlO(OH)
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Diopside
    CaMg[Si
     
    2
    		O
     
    6
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Effenbergerite (TL)
    BaCu[Si
     
    4
    		O
     
    10
    		]
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Description: It occurs in pectolite veins which transect a fine grained massive matrix of sugelite, braunite and manganite. Additional minerals accompanying the assemblage include copper, calcite, clinozoite and quartz.
    Reference: [Min. Mag. 58. pp. 663-670]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Brent Thorne
  		•  Ephesite
    NaLiAl
     
    2
    		[(OH)
     
    2
    		|Al
     
    2
    		Si
     
    2
    		O
     
    10
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Epidote
    {Ca
     
    2
    		}{Al
     
    2
    		Fe
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Ettringite
    Ca
     
    6
    		Al
     
    2
    		[(OH)
     
    4
    		|SO
     
    4
    		]
     
    3
    		 · 26H
     
    2
    		O
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob ++++++++
  		•  'Ferro-akermanite'
    Ca
     
    2
    		FeSi
     
    2
    		O
     
    7
    Reference: [Minerals of South Africa]
  		•  Ferrobustamite
    Ca(Fe
    2+
     
    		,Ca,Mn
    2+
     
    		)[Si
     
    2
    		O
     
    6
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Foshagite
    Ca
     
    4
    		[(OH)
     
    2
    		|Si
     
    3
    		O
     
    9
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Friedelite
    (Mn,Fe)
     
    8
    		Si
     
    6
    		O
     
    15
    		(OH,Cl)
     
    10
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Gageite
    Mn
     
    21
    		O
     
    3
    		(Si
     
    4
    		O
     
    12
    		)
     
    2
    		(OH)
     
    20
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Gaudefroyite
    Ca
     
    4
    		Mn
    3+
    2-3
    		[(O,OH)
     
    3
    		|CO
     
    3
    		|(BO
     
    3
    		)
     
    3
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © 2005 M. Kampf
  		•  Glaucochroite
    CaMn
    2+
     
    		[SiO
     
    4
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Description: Also as pseudomorphs after kutnohorite
    Reference: [Minerals of South Africa]
  		•  Gonyerite
    (Mn,Mg)
     
    5
    		Fe(Si
     
    3
    		Fe)O
     
    10
    		(OH)
     
    8
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Gowerite
    Ca[B
     
    5
    		O
     
    8
    		(OH)][B(OH)
     
    3
    		]·3H
     
    2
    		O
    Reference: [Minerals of South Africa]
  		•  Grossular
    Ca
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Gypsum
    Ca[SO
     
    4
    		] · 2H
     
    2
    		O
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Hausmannite
    MnMn
     
    2
    		O
     
    4
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Hennomartinite (TL)
    SrMn
    3+
    2
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Habit: anhedral
    Colour: yellow-brown
    Description: Intergrowths with serandite-pectolite in small veins crosscutting an assemblage of idiomorphic sugilite in fibrous serandite-pectolite.
    Reference: [Schweiz.Min.Petr.Mitt.(1993) 73, 349-355]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Knut Eldjarn
  		•  Henritermierite
    Ca
     
    3
    		(Mn
    3+
     
    		,Al)
     
    2
    		[(OH)
     
    4
    		|(SiO
     
    4
    		)
     
    2
    		]
    Habit: dipyramid
    Colour: red
    Description: Zoned crystals with holtstamite.
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]; European Journal of Mineralogy: 17(2): 375-382.]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Hibschite
    Ca
     
    3
    		Al
     
    2
    		[(OH)
     
    6-1
    		|(SiO
     
    4
    		)
     
    1.5-2.5
    		]
    Reference: [Minerals of South Africa]
  		•  Holtstamite (TL)
    Ca
     
    3
    		(Al,Mn
    3+
     
    		)
     
    2
    		(SiO
     
    4
    		)
     
    2
    		(OH)
     
    4
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Description: Zoned crystals with henritermierite.
    Reference: [Am. Min. (2005): 90: 1946; European Journal of Mineralogy: 17(2): 375-382.]
  		•  Inesite
    Ca
     
    2
    		(Mn,Fe)
     
    7
    		Si
     
    10
    		O
     
    28
    		(OH)
     
    2
    		·5H
     
    2
    		O
    Habit: chisel-shaped in stacked, fan-shaped parallell groups and aggregates
    Colour: pale red
    Reference: [Gutzmer, J. & Cairncross, B. (1993): Recent discoveries from the Wessels mine South Africa. Mineralogocal Record 24 (5): 365-368]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Jacobsite
    Mn
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Minerals of South Africa]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Jennite
    Ca
     
    9
    		H
     
    2
    		Si
     
    6
    		O
     
    18
    		(OH)
     
    8
    		·6H
     
    2
    		O
    Habit: Platey crystals to 0.5mm
    Description: Single pocket found.
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Knut Eldjarn
  		•  Johannsenite
    CaMn
    2+
     
    		[Si
     
    2
    		O
     
    6
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Kentrolite
    Pb
     
    2
    		Mn
    3+
    2
    		[O
     
    2
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Kirschsteinite
    CaFe
    2+
     
    		[SiO
     
    4
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Kornite (TL)
    [(Na,K)][Na
     
    2
    		][Mg
     
    2
    		Mn
    3+
    2
    		Li][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Habit: fine fibers to 0.2mm
    Colour: dark red to lilac
    Reference: [Schweiz.Min.Petr.Mitt.(1993) 73, 349-355]
  		•  Kutnohorite
    Ca(Mn,Mg,Fe)(CO
     
    3
    		)
     
    2
    Reference: [No reference listed]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © namibiaminerals
  		•  Leucophoenicite
    Mn
    2+
    7
    		[(OH)
     
    2
    		|(SiO
     
    4
    		)
     
    3
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Lizardite
    Mg
     
    3
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    5
    		]
    Reference: [Minerals of South Africa]
  		•  Magnesio-arfvedsonite
    [Na][Na
     
    2
    		][Mg
     
    4
    		Fe
    3+
     
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Manganipiemontite-(Sr) (TL)
    {CaSr}{Mn
    3+
     
    		AlMn
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Reference: [Min.Mag.(2002) 66, 137-150; Lapis 2002(11), 43]
  		•  Manganite
    Mn
    3+
     
    		O(OH)
    Reference: []
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Manganvesuvianite (TL)
    Ca
     
    19
    		Mn(Al,Mn,Fe)
     
    19
    		(Mg,Mn)
     
    2
    		Si
     
    18
    		O
     
    69
    		(OH)
     
    9
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Reference: [T. Armbruster et al. (2002) Min. Mag. 66, 137-150; European Journal of Mineralogy: 17(2): 375-382.]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Marcasite
    FeS
     
    2
    Reference: [Minerals of South Africa]
  		•  Marokite
    CaMn
     
    2
    		O
     
    4
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Minnesotaite
    (Fe,Mg)
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: [Minerals of South Africa]
  		•  Mozartite
    CaMn
    3+
     
    		[OH|SiO
     
    4
    		]
    Reference: [Minerals of South Africa]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Knut Eldjarn
  		•  Natrolite
    Na
     
    2
    		[Al
     
    2
    		Si
     
    3
    		O
     
    10
    		] · 2H
     
    2
    		O
    Reference: [Gutzmer, J. & Cairncross, B. (1993): Recent discoveries from the Wessels mine South Africa. Mineralogocal Record 24 (5): 365-368]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Nchwaningite
    Mn
    2+
    2
    		[(OH)
     
    2
    		|SiO
     
    3
    		] · H
     
    2
    		O
    Reference: [No reference listed]
  		•  Neltnerite
    CaMn
    3+
    6
    		[O
     
    8
    		|SiO
     
    4
    		]
    Reference: [Minerals of South Africa]
  		•  Norrishite
    KLiMn
    2+
    2
    		[(OH)
     
    2
    		|Si
     
    4
    		O
     
    10
    		]
    Reference: [Gnos E., Armbruster T., Villa I. M., 2003. Norrishite, K(Mn3+2Li)Si4O10(O)2, an oxymica associated with sugilite from the Wessels Mine, South Africa: Crystal chemistry and 39Ar-40Ar dating. Am. Miner., 88: 189-194 ]
  		•  Orientite
    Ca
     
    2
    		MnMn
     
    2
    		Si
     
    3
    		O
     
    10
    		(OH)
     
    4
    Reference: [Minerals of South Africa]
  		•  Orlymanite (TL)
    Ca
     
    4
    		Mn
     
    3
    		Si
     
    8
    		O
     
    20
    		(OH)
     
    6
    		·2H
     
    2
    		O
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Reference: [Amer.Min.(1990) 75, 923-927; Mandarino, 1997]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Edwards Minerals
  		•  Parsettensite
    K
     
    1.2
    		Mn
     
    8
    		(Si,Al)
     
    12
    		O
     
    26
    		(OH)
     
    10
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Pectolite
    NaCa
     
    2
    		[HSi
     
    3
    		O
     
    9
    		]
    Reference: [No reference listed]
  		•  Piemontite
    {Ca
     
    2
    		}{Al
     
    2
    		Mn
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Minerals of South Africa]
  		•  Piemontite-(Sr)
    {CaSr}{Al
     
    2
    		Mn
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [Minerals of South Africa]
  		•  Poldervaartite (TL)
    CaCa[SiO
     
    3
    		OH](OH)
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Habit: Sprays to 1 cm
    Colour: White
    Description: One pocket was discovered
    Reference: [Amer.Min.(1993) 78, 1082-1087; von Bezing, L. & Gutzmer, J. (1994): Das Kalahari Manganerzfeld und seine Mineralien (II). Mineralien-Welt, 5(5), 41-59. Gutzmer, J. & Cairncross, B. (2001): Seltene Mineralien aus dem Kalahari-Manganerzfeld, Südafrika. Lapis, 26(10), 32-42; Gutzmer, J. & Cairncross, B. (2002): Spectacular Minerals from the Kalahari Manganese Field, South Africa. Rocks & Minerals, 77(2), 94-107. ]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Portlandite
    Ca(OH)
     
    2
    Reference: [No reference listed]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © 2008, JGW
  		•  Pyrite
    FeS
     
    2
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Pyrochroite
    Mn(OH)
     
    2
    Reference: [MinRec 22:289]
  		•  Pyrolusite
    MnO
     
    2
    Reference: [Minerals of South Africa]
  		•  Pyrophanite
    Mn
    2+
     
    		TiO
     
    3
    Reference: [Minerals of South Africa]
  		•  Quartz
    SiO
     
    2
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Quartz
    var: Amethyst
    SiO
     
    2
    Reference: [Minerals of South Africa]
  		•  Rhodochrosite
    MnCO
     
    3
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Rhodonite
    MnSiO
     
    3
    Reference: [Gutzmer, J. & Cairncross, B. (1993): Recent discoveries from the Wessels mine South Africa. Mineralogocal Record 24 (5): 365-368]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Richterite
    Na[CaNa][Mg
     
    5
    		][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Ruizite
    Ca
     
    2
    		Mn
    3+
    2
    		[(OH)
     
    2
    		|H
     
    2
    		Si
     
    4
    		O
     
    13
    		] · 2H
     
    2
    		O
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
     
  		•  Sérandite
    Na(Mn
    2+
     
    		,Ca)
     
    2
    		[HSi
     
    3
    		O
     
    9
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Shigaite
    Al
     
    4
    		Mn
     
    7
    		(SO
     
    4
    		)
     
    2
    		(OH)
     
    22
    		·8H
     
    2
    		O
    Reference: []
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © JBS 2006
  		•  Sturmanite
    Ca
     
    6
    		(Fe
    3+
     
    		,Al,Mn
    3+
     
    		)
     
    2
    		[(OH)
     
    12
    		|B(OH)
     
    4
    		|(SO
     
    4
    		)
     
    2
    		] · 25H
     
    2
    		O
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Martins da Pedra
  		•  Sugilite
    KNa
     
    2
    		(Fe,Mn,Al)
     
    2
    		Li
     
    3
    		Si
     
    12
    		O
     
    30
    Description: Crystals to 20 mm although better crystals to 3mm
    Reference: [Minerals of South Africa]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Robert O. Meyer
  		•  Taikanite
    Sr
     
    3
    		BaMn
    2+
    2
    		[O|Si
     
    2
    		O
     
    6
    		]
     
    2
    Reference: [Armbruster, T. , Oberhänsli, R. and Kunz, M. (1993). "Taikanite BaSr2Mn3+2O2(Si4O12) from the Wessels mine (South Africa)." American Mineralogist, 78(9/10),pp:1088-1095. - Minerals of South Africa]
  		•  Tephroite
    Mn
    2+
    2
    		[SiO
     
    4
    		]
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Knut Eljarn
  		•  Tetraferriannite
    KFe
    2+
    3
    		[(OH)
     
    2
    		|(Fe
    3+
     
    		,Al)Si
     
    3
    		O
     
    10
    		]
    Reference: [No reference listed]
  		•  Thaumasite
    Ca
     
    3
    		[CO
     
    3
    		|SO
     
    4
    		|Si(OH)
     
    6
    		] · 12H
     
    2
    		O
    Reference: [Minerals of South Africa]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Thomsonite-Ca
    NaCa
     
    2
    		[Al
     
    5
    		Si
     
    5
    		O
     
    20
    		] · 6H
     
    2
    		O
    Habit: Thin, rectangular blades stacked together in spherical groups
    Reference: [Gutzmer, J. & Cairncross, B. (1993): Recent discoveries from the Wessels mine South Africa. Mineralogocal Record 24 (5): 365-368]
  		•  Tobermorite
    Ca
     
    5
    		Si
     
    6
    		(O,OH)
     
    18
    		·5H
     
    2
    		O
    Reference: [Gutzmer, J. & Cairncross, B. (1993): Recent discoveries from the Wessels mine South Africa. Mineralogocal Record 24 (5): 365-368]
  		•  Vaterite
    CaCO
     
    3
    Reference: [Minerals of South Africa]
  		•  Vesuvianite
    Ca
     
    10
    		(Mg,Fe)
     
    2
    		Al
     
    4
    		Si
     
    9
    		O
     
    34
    		(OH)
     
    4
    Reference: [Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]
  		•  Vonbezingite (TL)
    Ca
     
    6
    		Cu
     
    3
    		[(OH)
     
    12
    		|(SO
     
    4
    		)
     
    3
    		] · 2H
     
    2
    		O
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Habit: elongated monoclinic crystals to 1.5 cm.
    Reference: [Amer.Min.(1992) 77, 1292-1300]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Brent Thorne 2007
  		•  Vuagnatite
    CaAl[OH|SiO
     
    4
    		]
    Reference: [Minerals of South Africa]
  		•  Wesselsite (TL)
    SrCu[Si
     
    4
    		O
     
    10
    		]
    Type Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    Reference: [Min.Mag.(1996) 60, 795-798]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Brent Thorne 2009
  		•  Wollastonite
    Ca[SiO
     
    3
    		]
    Reference: [MinRec 22:296]
  		•  Xonotlite
    Ca
     
    6
    		Si
     
    6
    		O
     
    17
    		(OH)
     
    2
    Reference: [No reference listed]
    Site Photo
    Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa
    © Rob Lavinsky
  		•  Zoisite
    {Ca
     
    2
    		}{Al
     
    3
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    Reference: [No reference listed]


    108 entries listed. 103 valid minerals. 10 type localities (valid minerals).

    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!
    This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    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: 26th Nov 2009 15:58:24