1 Paint-there are dozens of quality brands available, and for a room in the size described it will require two full gallons to cover the walls. 2  The better paints will cost between $30 and $50 per gallon, and will come as flat, semi-gloss, or glossy finish.
Foliation is the result of the parallel arrangement of (micas, etc.) in a plane perpendicular to the maximum principal applied stress. A lineation is caused by a similar growth of elongate minerals (eg. hornblende) in this plane. Slate, schist, and gneiss are three common foliated metamorphic rocks.
Schist is a type of metamorphic rock that can originate from slate which is another type of metamorphic rock. The word metamorphic literally means changed form. Slate, a metamorphic rock, can form from shale, clay or mudstone. The Taj Mahal in India is made entirely of different types of marble, a metamorphic rock.