| Tourmaline || NaMg<sub>3</sub> AI<sub>6</sub> B<sub>3</sub> Si<sub>6</sub> O<sub>2</sub> (OH)<sub>4</sub> || 3.02 || 16. || 22. || || || 2.14 || 6.46 || || || — || 7449.82 | | Tourmaline || NaMg<sub>3</sub> AI<sub>6</sub> B<sub>3</sub> Si<sub>6</sub> O<sub>2</sub> (OH)<sub>4</sub> || 3.02 || 16. || 22. || || || 2.14 || 6.46 || || || — || 7449.82 |