ˌkȯ(r)nəˈrüˌpēn, -_pə̇n noun
( -s )
Etymology: Danish kornerupin, from A. N. Kornerup, 19th century Danish geologist + Danish -in -ine
: a mineral (Mg,Fe,Al) 20 (Si,B) 9 O 43 consisting of a magnesium aluminum iron borosilicate resembling sillimanite in appearance