kalˈkȯfˌskīt noun
( -s )
Etymology: German kalkowsk yn (irregular from E. L. Kalkowsky died 1938 German mineralogist + German -in -ine) + English -ite
: a mineral Fe 2 Ti 3 O 9 (?) consisting of an oxide of iron and titanium and usually containing small amounts of rare-earth elements, niobium, and tantalum