The Definitive Guide to Paraiba Tourmaline
, the sodium iron (divalent) endmember of your team. It could account for ninety five% or even more of all tourmaline in character. The early background in the mineral schorl exhibits which the title "schorl" was in use previous to 1400 mainly because a village known today as Zschorlau (in Saxony, Germany) was then named "Schorl" (or insignificant