Sphène, n.
n. [Fr. sphène, from Gr. σφήν, a wedge.] (Min.) A mineral composed of silica, titanic acid, and lime. Its colors are dull yellow, green, gray, brown, and black. It is found usually in thin, wedge-shaped crystals.
n. [Fr. sphène, from Gr. σφήν, a wedge.] (Min.) A mineral composed of silica, titanic acid, and lime. Its colors are dull yellow, green, gray, brown, and black. It is found usually in thin, wedge-shaped crystals.