SPHENE, n. A mineral composed of nearly equal parts of oxyd of titanium, silex and lime. Its colors are commonly grayish, yellowish, redish and blackish brown, and various shades of green. It is found amorphous and in crystals.
SPHENE, n. [Gr. σφην, a wedge.]
A mineral composed of silicic acid, titanic acid, and lime. Its colors are dull yellow, green, gray, brown, and black. It is found amorphous and in crystals. The primary form of its crystal is an oblique rhombic prism.
- A mineral found
usually in thin, wedge-shaped crystals of a yellow or green to black
color. It is a silicate of titanium and calcium; titanite.