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Tantalbetafite Gallery

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Multiple photos availableBetafite (Var: Tantalbetafite) : (Ca,U)2(Ti,Nb)2O6(OH), Schorl : [Na][Fe2+3][Al6][(OH)3|OH|(BO3)3|Si6O18], Microcline : K[AlSi3O8]

Kiimassuo pegmatite, Forssa, Etelä-Suomen Lääni, Finland

7x3 mm grain of golden-brown Tantalbetafite of composition (Ca1.20Na.49U.25Pb.05)1.99(Ti.73Ta.73Nb.57W.03)2.00O6.29F.71. Associating minerals are black Schorl and white Microcline. Collected by Ilkka Mikkola. Pavel M. Kartashov analytical data, collection and photo.
 © Pavel M. KartashovPhoto ID: 258836    View Count: 21

Betafite (Var: Tantalbetafite) : (Ca,U)2(Ti,Nb)2O6(OH)

Kiimassuo pegmatite, Forssa, Etelä-Suomen Lääni, Finland

Shining grain of golden-brown Tantalbetafite of composition (Ca1.20Na.49U.25Pb.05)1.99(Ti.73Ta.73Nb.57W.03)2.00O6.29F.71 overgrow black Schorl crystal into white Microcline matrix. Length of the arrow is 7 mm. Collected by Ilkka Mikkola. Pavel M. Kartashov analytical data, collection and photo.
 © Pavel M. KartashovPhoto ID: 258844    View Count: 19
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