ˈspesə(r)ˌtīt noun
also spes·sart·ine -ˌtēn, -_tə̇n
( -s )
Etymology: French, from Spessart, mountain range in southern Germany + French -ite, -ine
: a manganese aluminum garnet ideally Mn 3 Al 2 (SiO 4 ) 3 usually containing iron, magnesium, or other elements in minor amounts — see garnet 1