What is "mugearite"

n. A kind of orthoclase-bearing basalt that is made up of olivine, apatite, and opaque oxides.

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

The rock type was first identified at Mugeary on the island of Skye, Scotland by Alfred Harker in 1904. Analysis of a Martian rock found by the Curiosity rover and named "Jake Matijevic"(or "Jake M"), after a NASA engineer, determined that the martian rock was very similar to terrestrial mugearite.