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tourmaline
t o u r m a l i n e hex:#116;#111;#117;#114;#109;#97;#108;#105;#110;#101;
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- Tourmaline - n. - A mineral occurring usually in three-sided or six-sided prisms terminated by rhombohedral or scalenohedral planes. Black tourmaline (schorl) is the most common variety, but there are also other varieties, as the blue (indicolite), red (rubellite), also green, brown, and white. The red and green varieties when transparent are valued as jewels.
- Tourmaline - n. - A mineral occurring usually in three-sided or six-sided prisms terminated by rhombohedral or scalenohedral planes. Black tourmaline (schorl) is the most common variety, but there are also other varieties, as the blue (indicolite), red (rubellite), also green, brown, and white. The red and green varieties when transparent are valued as jewels.
- Rubellite - n. - A variety of tourmaline varying in color from a pale rose to a deep ruby, and containing lithium.
- Chrysolite - n. - A mineral, composed of silica, magnesia, and iron, of a yellow to green color. It is common in certain volcanic rocks; -- called also olivine and peridot. Sometimes used as a gem. The name was also early used for yellow varieties of tourmaline and topaz.
- Cockle - n. - The mineral black tourmaline or schorl; -- so called by the Cornish miners.
- Indicolite - n. - A variety of tourmaline of an indigo-blue color.