An Unbiased View of Paraiba Tourmaline
, the sodium iron (divalent) endmember of the group. It might account for 95% or even more of all tourmaline in mother nature. The early history with the mineral schorl reveals the title "schorl" was in use just before 1400 mainly because a village recognized now as Zschorlau (in Saxony, Germany) was then named "Schorl" (or minimal variants of the