Tourmaline, esp. the black variety.
| 单词 | θ6862 |
| 释义 | the world > the earth > minerals > types of mineral > silicates > cyclosilicates > [noun] > tourmaline > schorl (3) schorla1773 Tourmaline, esp. the black variety. schorl-rock1811 (see quot. 1882). schorl-schist1885 |
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