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Quixaba pegmatite, Quixaba, Frei Martinho, Borborema mineral province, Paraíba, Northeast Region, Brazil

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(Mina Quixaba, Alto Quixaba)

Granitic pegmatite in biotite schist of the Seridó Formation. Contains blue, green, bi- and tricoloured gem tourmaline.
Located 15 km NE of Frei Martinho.

Ref.:
- http://www.sbgeo.org.br/571.html





Mineral List:
  		•  Albite
    var: Cleavelandite
    Reference: []
  		•  Amblygonite
    LiAl[(F,OH)|PO
     
    4
    		]
    Reference: []
  		•  Beryl
    Be
     
    3
    		Al
     
    2
    		Si
     
    6
    		O
     
    18
    Reference: []
  		•  Fluornatromicrolite (TL)
    (Na,Ca,Bi)
     
    2
    		Ta
     
    2
    		O
     
    6
    		F
    Type Locality: Quixaba pegmatite, Quixaba, Frei Martinho, Borborema mineral province, Paraíba, Northeast Region, Brazil
    Reference: []
    Site Photo
    Quixaba pegmatite, Quixaba, Frei Martinho, Borborema mineral province, Paraíba, Northeast Region, Brazil
    © Bruno Gioia
  		•  Lepidolite
    Reference: []
  		•  Microcline
    K[AlSi
     
    3
    		O
     
    8
    		]
    Reference: []
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: []
  		•  Quartz
    SiO
     
    2
    Reference: []
  		•  Schorl
    [Na][Fe
    2+
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: []
  		•  Tantalite-(Mn)
    MnTa
     
    2
    		O
     
    6
    Reference: []
  		•  Tapiolite-(Fe)
    (Fe,Mn)(Ta,Nb)
     
    2
    		O
     
    6
    Reference: [Collection Elmar Lackner]
    Site Photo
    Quixaba pegmatite, Quixaba, Frei Martinho, Borborema mineral province, Paraíba, Northeast Region, Brazil
    © fabreminerals.com
  		•  'Tourmaline
    var: Indicolite'
    Reference: []
    Site Photo
    Quixaba pegmatite, Quixaba, Frei Martinho, Borborema mineral province, Paraíba, Northeast Region, Brazil
    © Joseph A. Freilich
  		•  'Tourmaline
    var: Verdelite'
    Reference: []


    13 entries listed. 9 valid minerals. 1 type locality (valid mineral).

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