monticellite

[ mon-tuh-sel-ahyt, -chel- ]
/ ˌmɒn təˈsɛl aɪt, -ˈtʃɛl- /

noun

a mineral, silicate of magnesium and calcium, CaMgSiO4, belonging to the olivine group and often occurring in contact metamorphosed limestones.

Origin of monticellite

1825–35; named after T. Monticelli (1758–1846), Italian mineralogist; see -ite1