Marble
Marble
Marble is a nonfoliated metamorphic rock resulting from the metamorphism of limestone, composed mostly of calcite (a crystalline form of calcium carbonate, CaCO3). It is extensively used for sculpture, as a building material, and in many other applications.
Slate
Slate is a regionally metamorphosis, argillaceous rock, that has developed but has suffered re-crystallization, and compressed into a dense stone made up of quartz, iolite, mica and calcite. Because it is formed in layers, it can easily be split to expose beautifully textured surfaces.
The usual colors of slates are earthy (various shades and mixes of browns, beiges, yellows), black, dark-grays, and greenish-gray but shades of pinks, purples and copper are also found.
They usually exhibit lot of variations amongst the pieces quarried from the same pit. Slates, depending on their individual hardness, are used for flooring, cladding and landscaping.
Slate
