Indicators on Paraiba Tourmaline You Should Know
, the sodium iron (divalent) endmember of the group. It might account for 95% or maybe more of all tourmaline in character. The early background of the mineral schorl reveals that the identify "schorl" was in use prior to 1400 for the reason that a village regarded nowadays as Zschorlau (in Saxony, Germany) was then named "Schorl" (or minimal varia