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