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RM3725   Schorl (tourmaline) in matrix
NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)
  -  9. Silicates

These plover specimens usually come loose, off the matrix. In this specimen, we can see a doubly terminated crystal on a sericite-talc matrix.

Size: 6 x 5.7 x 3.7 cm.
Main crystal: 24 x 18 mm.
45 €