Specimens from the BCGM Collection
Tourmaline var. Schorl (Cyclosilicates) - NaFe3Al6(B03)3Si6O18(OH)4
BCGM 186 - Cereara, Brazil
Specimens from the BCGM Collection
Tourmaline var. Schorl (Cyclosilicates) - NaFe3Al6(B03)3Si6O18(OH)4
BCGM 186 - Cereara, Brazil