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RM3319   Schorl
NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
  -  9. Silicates

Group of tourmaline schorl crystals in parallel growth, with an intense black color and brilliance. With defined top terminal faces. It belongs from the collection of Peter Seroka (L'Escala, Catalonia).

Size: 6.3 x 4.2 x 2.8 cm.
Col. Peter Seroka (L'Escala, Girona) #599
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