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Mbobo Mkulu Cave, Nelspruit District, Mpumalanga Province, South Africa

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Located on Farm Goed Geluk 444 JT.

Cave with dolomite, black shale with Cu-Ni sulphides and chert breccia. Reaction between oxidized sulphides, aluminum from phyllosilicates and bat guano has formed some rare minerals.





Mineral List:
  		•  Allophane
    (Al
     
    2
    		O
     
    3
    		)(SiO
     
    2
    		)
     
    1.3-2
    		·2.5-3H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997); ]
  		•  Aluminite
    Al
     
    2
    		[(OH)
     
    4
    		|SO
     
    4
    		] · 7H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Alum-(K)
    KAl[SO
     
    4
    		]
     
    2
    		 · 12H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Alunite
    KAl
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997); ]
  		•  Aragonite
    CaCO
     
    3
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Atacamite
    Cu
     
    2
    		[(OH)
     
    3
    		|Cl]
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Brushite
    CaHPO
     
    4
    		·2H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Chalcoalumite
    CuAl
     
    4
    		[(OH)
     
    12
    		|SO
     
    4
    		] · 3H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Cryptomelane
    K(Mn
    4+
     
    		,Mn
    2+
     
    		)
     
    8
    		O
     
    16
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Gibbsite
    Al(OH)
     
    3
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Gypsum
    Ca[SO
     
    4
    		] · 2H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Halloysite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Hydromagnesite
    Mg
     
    5
    		[(CO
     
    3
    		)
     
    4
    		(OH)
     
    2
    		] · 4H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Hydrombobomkulite (TL)
    (Ni,Cu)Al
     
    4
    		[(OH)
     
    12
    		|{(NO
     
    3
    		)
     
    2
    		,SO
     
    4
    		}] · 13-14H
     
    2
    		O
    Type Locality: Mbobo Mkulu Cave, Nelspruit District, Mpumalanga Province, South Africa
    Reference: [Annal.Geol.Survey S.Africa,(1980) 14, no. 2, 1-110; Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
    Site Photo
    Mbobo Mkulu Cave, Nelspruit District, Mpumalanga Province, South Africa
    © Rick Turner, 2009
  		•  Jarosite
    KFe
    3+
     
     
    3
    		[(OH)
     
    3
    		|SO
     
    4
    		]
     
    2
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Lepidocrocite
    γ-Fe
    3+
     
    		O(OH)
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Leucophosphite
    KFe
    3+
    2
    		[OH|(PO
     
    4
    		)
     
    2
    		] · 2H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Mbobomkulite (TL)
    (Ni,Cu)Al
     
    4
    		[(OH)
     
    12
    		|{(NO
     
    3
    		)
     
    2
    		,SO
     
    4
    		}] · 3H
     
    2
    		O
    Type Locality: Mbobo Mkulu Cave, Nelspruit District, Mpumalanga Province, South Africa
    Reference: [Ann.Geol.Surv.S.Africa,(1980) 14, n2, 1-110; Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
    Site Photo
    Mbobo Mkulu Cave, Nelspruit District, Mpumalanga Province, South Africa
    © Brent Thorne 2009
  		•  Newberyite
    MgHPO
     
    4
    		·3H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Nickelalumite
    (Ni,Cu)Al
     
    4
    		[(OH)
     
    12
    		|{SO
     
    4
    		,(NO
     
    3
    		)
     
    2
    		}] · 3H
     
    2
    		O
    Reference: [Ann.Geol.Surv.S.Africa,(1980) 14, n2, 1-110;Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
    Site Photo
    Mbobo Mkulu Cave, Nelspruit District, Mpumalanga Province, South Africa
    © Brent Thorne
  		•  Opal
    SiO
     
    2
    		·nH
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Sampleite
    NaCaCu
     
    5
    		[Cl|(PO
     
    4
    		)
     
    4
    		] · 5H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997); ]
  		•  Sasaite
    (Al,Fe
    3+
     
    		)
     
    14
    		[(OH)
     
    7
    		|SO
     
    4
    		|(PO
     
    4
    		)
     
    11
    		] · 83H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Strengite
    FePO
     
    4
    		·2H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Taranakite
    (K,NH
     
    4
    		)Al
     
    3
    		(PO
     
    4
    		)
     
    3
    		OH·9H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Todorokite
    (Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)
     
    6
    		O
     
    12
    		·3H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Variscite
    AlPO
     
    4
    		·2H
     
    2
    		O
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]
  		•  Whitlockite
    Ca
     
    9
    		Mg[PO
     
    3
    		OH][PO
     
    4
    		]
     
    6
    Reference: [Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)]


    30 entries listed. 28 valid minerals. 2 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: 27th Nov 2009 04:54:52