The 2-Minute Rule for Paraiba Tourmaline
, the sodium iron (divalent) endmember of your group. It might account for ninety five% or maybe more of all tourmaline in nature. The early historical past of the mineral schorl exhibits the title "schorl" was in use previous to 1400 for the reason that a village known these days as Zschorlau (in Saxony, Germany) was then named "Schorl" (or insign