Slate is a compact, fined-grained, metamorphic rock; The presence of iron and/or carbon compounds create the wide variety of colours inherent to slate: grey, black, green, red, purple, yellow, brown and gold.
Slate has an uneven surface as it is split, rather than sliced from quarried stone.
Quartzite is a dense, crystallized slate composed of quartz crystals. Colour ranges from silver-grey, green and blue to warm gold and brown. |
