Mugearite

Mugearite
Igneous rock
Mugearite lava flow (on right); flow on left is hawaiite; at North Berwick, Scotland
Composition
oligoclase, olivine

Mugearite (/ˈmʌɡiərt/) is a type of oligoclase-bearing basalt, comprising olivine, apatite, and opaque oxides. The main feldspar in mugearite is oligoclase.

Mugearite is a sodium-rich member of the alkaline magma series. In the TAS classification of volcanic rock, mugearite is classified as sodium-rich basaltic trachyandesite.