Slate is a fine-grained metamorphic rock. It's main constituents are quartz, chlorite, mica & calcite. Slate is formed when ocean or riverbed sediments are compressed and heated by the earth's crust.

Slate stone is chemically a multi-mineral rock made of an aggregate of minerals and colloidal substances. Essentially mineral composition includes members of Mica group commonly sericite & muscovite, Clay group commonly aragonite, chlorite & kaonilite. The accessory minerals are oxides, calcites & minor amounts of quartz and feldspar along with subordinate amounts of ferro-magnesium minerals. Free silica is normally poor. It is resistant to acids and staining.

All of our Slate selection are offered in an 18" x 18" size.