Top Paraiba Tourmaline Secrets
, the sodium iron (divalent) endmember on the group. It might account for 95% or more of all tourmaline in nature. The early record with the mineral schorl demonstrates which the identify "schorl" was in use previous to 1400 due to the fact a village recognized nowadays as Zschorlau (in Saxony, Germany) was then named "Schorl" (or slight variants o