Mī′ca-schist, Mī′ca-slate, a metamorphic rock consisting of alternate layers of mica and quartz.
Granite is recognised as an igneous as well as a metamorphic rock.
If mica is a prominent element, the metamorphic rock is easily parted into overlapping, scaly layers.
Syenite, like granite, is recognised as an igneous as well as a metamorphic rock.
The mountains along the canyon are all of metamorphic rock, splintered and shivered by too rapid cooling.
From aqueous rock materials, fire has produced a metamorphic rock.
A very large proportion of both the quartz and placer mining of North America is in regions occupied by metamorphic rock.
In many cases, however, the early history of a metamorphic rock can be deciphered.
It is a metamorphic rock derived from either sedimentary or igneous rock, more commonly the former.