1) Aphanitic rock 
Mugearite t 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`)...