learned that Atoko Point is composed of pyroxene and feldspar. Both materials are commonly found in volcanic and metamorphic rocks on Earth. Atoko Point also probably originated elsewhere further ...

There are three main types of rock — igneous, sedimentary and metamorphic — with varying ... minerals and include feldspar, olivine, pyroxene, mica, quartz and amphibole." ...

Swapp, S.M., and B.R. Frost, 1991, Pyroxene-producing reactions in contact ... My principal area of petrologic research involves the elucidation of metamorphic reactions in contact and regionally ...