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Tapira Complex, Tapira, Minas Gerais, Southeast Region, Brazil

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Carbonatite complex, hosted in weathered pyroxenite, syenite, sövite, silexite, and jacupirangite. The deposit is presently mined for Ti and phosphates, but also represents a potential Nb, REE, and vermiculite resource.

Ref.:
- Orris, G.J., and Grauch, R.I. (2002): Rare earth element mines, deposits, and occurrences. USGS Open-File Report 02-189.
- http://www.koeln.netsurf.de/~w.steffens/brazil.htm





 Map Reference: 19°54'S , 46°52'W

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Mineral List:
  		•  Anatase
    TiO
     
    2
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Andradite
    var: Melanite
    Reference: []
  		•  'Apatite'
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Apatite-(CaOH)
    Ca
     
    5
    		[OH|(PO
     
    4
    		)
     
    3
    		]
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Augite
    (Ca,Na)(Mg,Fe
    2+
     
    		,Al,Fe
    3+
     
    		,Ti)[(Si,Al)
     
    2
    		O
     
    6
    		]
    Reference: []
  		•  Bariopyrochlore
    (Ba,Sr)
     
    2-x
    		(Nb,Ti)
     
    2
    		(O,OH)
     
    7
    Reference: []
  		•  Biotite
    Reference: []
  		•  Calzirtite
    CaZr
     
    3
    		TiO
     
    9
    Reference: []
  		•  Crandallite
    CaAl
     
    3
    		[(OH)
     
    5
    		|(PO
     
    4
    		)
     
    2
    		] · H
     
    2
    		O
    Reference: [http://www.sbgeo.org.br/597.html]
  		•  Diopside
    CaMg[Si
     
    2
    		O
     
    6
    		]
    Reference: []
  		•  'Garnet Group'
    X
     
    3
    		Z
     
    2
    		(TO
     
    4
    		)
     
    3
    		 (X = Ca, Fe, etc·, Z = Al, Cr, etc·, T = Si, As, V)
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Limonite
    FeO(OH)·nH
     
    2
    		O
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Melilite
    (Ca,Na)
     
    2
    		(Al,Mg,Fe
    2+
     
    		)[(Al,Si)SiO
     
    7
    		]
    Reference: []
  		•  'Olivine'
    (Mg,Fe
    2+
     
    		)
     
    2
    		[SiO
     
    4
    		]
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Perovskite
    CaTiO
     
    3
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Phlogopite
    KMg
     
    3
    		[(OH,F)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Pyrochlore
    (Ca,Na)
     
    2
    		Nb
     
    2
    		O
     
    6
    		(OH,F)
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  'Pyroxene Group'
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Quartz
    SiO
     
    2
    Reference: []
  		•  'Rhabdophane'
    Reference: [http://www.sbgeo.org.br/597.html]
  		•  Titanite
    CaTi[O|SiO
     
    4
    		]
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]
  		•  Vermiculite
    (Mg,Fe,Al)
     
    3
    		(Al,Si)
     
    4
    		O
     
    10
    		(OH)
     
    2
    		·4H
     
    2
    		O
    Reference: [Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.]


    24 entries listed. 15 valid minerals.

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