a variously colored mineral, CaTiSiO, that is an ore of titanium; calcium titanium silicate
Origin of spheneFrench sphène ; from Classical Greek sphēn, a wedge (for Indo-European base see spoon): so named because of its crystal form
A titanium accessory mineral in some granite and metamorphic rocks, CaTiSiO5, occurring in usually small brown or yellow crystals and sometimes used as a gemstone. Also called titanite.
Origin of spheneFrench sphène, from Greek sphēn, wedge.
- (mineralogy) titanite