Mugearite

Mugearite

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

Mugearite (pronunciation: /ˈmʌɡiːəraɪt/) 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. This mugearite was formed during a period of volcanic activity that happened in western Scotland during the Paleogene epoch of the Earth's geological history. Outcrops of mugearite of this age also occur on the island of Mull.

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.