allivalite

noun
al·​li·​va·​lite | \ ˈalə̇vəˌlīt\
plural -s

Definition of allivalite

: a plutonic rock composed of anorthite and olivine in approximately equal amounts

First Known Use of allivalite

1903, in the meaning defined above

History and Etymology for allivalite

Allival Hill, Isle of Rum, Inner Hebrides, Scotland, its locality + English -ite

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