Paraiba Tourmaline - An Overview
, the sodium iron (divalent) endmember of the group. It might account for 95% or maybe more of all tourmaline in mother nature. The early record of your mineral schorl reveals that the name "schorl" was in use previous to 1400 for the reason that a village recognised right now as Zschorlau (in Saxony, Germany) was then named "Schorl" (or small vari