The 2-Minute Rule for Paraiba Tourmaline
, the sodium iron (divalent) endmember of the group. It might account for ninety five% or even more of all tourmaline in nature. The early record from the mineral schorl displays which the name "schorl" was in use before 1400 due to the fact a village recognized right now as Zschorlau (in Saxony, Germany) was then named "Schorl" (or insignificant v