| X | Y3 | Z6 | V3 | Names |
TOUR 1 | Na | Fe3+ | Al | OH1− | Schorlitic tourmaline |
TOUR 2 | Na | Mg | Al | OH1− | Dravitic tourmaline |
TOUR 3 | Na | Mg | Al | OH1− | Dravitic tourmaline |
TOUR 4 | Na | Fe3+ | Al | OH1− | Schorlitic tourmaline |
TOUR 5 | Na | Fe3+ | Al | OH1− | Schorlitic tourmaline |
TOUR 6 | Na | Fe3+ | Al | OH1− | Schorlitic tourmaline |