Blue Cap Tourmaline


Tourmaline Queen Mine
Pala, California

Blue Cap Tourmaline

From what does the blue cap arise?

A growth layer poor in titanium and manganese, but with iron mostly in the 2+ oxidation state.


Optical spectra of elbaite GRR 2648 were obtained on a slab of blue cap tourmaline blue cap mined at the Tourmaline Queen mine, Pala, CA, obtained from PalaGems.