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Tuesday, 12 July 2016

Tourmaline var.Elbaite on Albite var.Cleavelandite





Tourmaline var.Elbaite :  Na (Li_{1.5} Al_{1.5} ) Al_6 Si_6 O_{18} (B O_3)_3 (O H)_4
with impurity from Mn or Ti
Pink/Yellow crystal

Crystal: Trigonal


Albite var.Cleavelandite : Na Al Si_3 O_8

White/Pale Blue Matrix

Crystal: Triclinic Pinacoidal



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