Question: which rock is a combination of igneous and metamorphic rock
Answer: ing Eclogite -- A dense , mafic metamorphic rock Gneiss -- A common high - grade metamorphic rock Granulite -- A class of high - grade medium to coarse grained metamorphic rocks Greenschist - a mafic metamorphic rock dominated by green amphiboles Hornfels -- A series of contact metamorphic rocks that have been baked and indurated by the heat of intrusive igneous masses Calcflinta - a type of hornfels found in the Scottish Highlands Litchfieldite - nepheline syenite gneiss Marble - a metamorphosed limestone Migmatite -- A mixture of metamorphic rock and igneous rock Mylonite - a metamorphic rock formed by shearing Metapelite - a metamorphic rock with a protolith of clay - rich ( siltstone ) sedimentary rock Metapsammite - a metamorphic rock with a protolith of quartz - rich ( sandstone ) sedimentary rock Phyllite - a low grade metamorphic rock composed mostly of micaceous minerals Pseudotachylite - a glass formed by melting within a fault via friction Quartzite - a metamorphosed sandstone typically composed of > 95 % qu