Slate is a very fine grained metamorphic rock derived from the sedimentary rock 'shale'. Slate is composed mostly of mica, chlorite and quartz. Characteristically, the rock may slit into relatively thinner slabs and can break easily. Some slates take very good polish, are extremely beautiful and more cost effective than most other wall and floor coverings. Slate has a fine to medium grained surface texture. It renders a very graceful, natural finish to any building or home. |