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ciminite

noun cim·i·nite \ ˈchiməˌnīt , ˈsim- \

Definition of ciminite

plural -s
:an extrusive rock intermediate between trachyte and andesite that is marked by the presence of olivine

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Origin and Etymology of ciminite

Monti Cimini (Ciminian hills), Italy, its locality + English -ite

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