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Golconda pegmatite, Governador Valadares, Doce valley, Minas Gerais, Southeast Region, Brazil

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Safira pegmatite district, Eastern Brazilian pegmatite province
Located about 25 km NW of downtown Governador Valadares.



References:
- Moore, T. (1993): What's new in Minerals ? Tucson Show 1993. Mineralogical Record 24 (3): 219- 230 [p 222 on a find of bertrandite]
- Morteani, G., Preinfalk, C., and Horn, A.H. (2000): Classification and mineralization potential of the pegmatites of the Eastern Brazilian Pegmatite Province. Mineralium Deposita 35, 638-655.





 Map Reference: 18°41'57"S , 42°4'17"W

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

Group 4 - Oxides and Hydroxides
  		• Quartz4.DA.05
    SiO
     
    2
    Group 8 - Phosphates, Arsenates and Vanadates
  		• Apatite-(CaF)8.BN.05
    Ca
     
    5
    		[F|(PO
     
    4
    		)
     
    3
    		]
  		• Herderite ?8.BA.10
    CaBe[(F,OH)|PO
     
    4
    		]
  		• Hydroxylherderite8.BA.10
    CaBe[(OH,F)|PO
     
    4
    		]
    Group 9 - Silicates
  		• Albite9.FA.35
    Na[AlSi
     
    3
    		O
     
    8
    		]
      var: Cleavelandite9.FA.35
    Na[AlSi
     
    3
    		O
     
    8
    		]
  		• Bertrandite9.BD.05
    Be
     
    4
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		]
  		• Beryl
    var: Morganite    		9.CJ.05
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
  		• Elbaite9.CK.05
    [Na][(Li,Al)
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
  		• Microcline9.FA.30
    K[AlSi
     
    3
    		O
     
    8
    		]
  		• Muscovite9.EC.15
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
  		• Orthoclase ?9.FA.30
    K[AlSi
     
    3
    		O
     
    8
    		]
  		• Schorl9.CK.05
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Unclassified Minerals
  		• 'K Feldspar'-
  		• Lepidolite-
  		• 'Manganese Oxides
    var: Manganese Dendrites'    		-
  		• 'Perthite'-
  		• 'Tapiolite'-
    (Fe,Mn)(Ta,Nb)
     
    2
    		O
     
    6


    18 entries listed. 13 valid minerals. 2 erroneous literature entries.

    Localities in this Region:
    Brazil
     
    • Southeast Region
      • Minas Gerais
        • Doce valley
          • Governador Valadares
            • Golconda pegmatite

    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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