English
marinite
From marine + -ite.
Formed from marine + -ite
Proto-Indo-European *móri ‘body of water, lake’
…
Latin marīnus ‘of the sea’
Old French marin
Middle French marin
Middle English marin
English marine
Today it means
noun A gray to black oil shale of marine origin in which the chiefmain organic components are lamalginite and bituminite derived from marine phytoplankton, with varied admixtures of bitumen, telalginite and vitrinite
Language periods are conventional ranges, not dates for this word.
Etymograph / marinite