Formed primarily from clay and eroded materials within the local environment. Mud, sand, volcanic ash and fragments of eroded igneous and sedimentary rocks combine to form the precursor, Shale and / or Mudstone. The metamorphic processes that transform the shale and mustone into Slate are in shallow pressure gradient, therefore, the low grade metamorphic environment has lower temperatures and pressures compared to other natural surfaces. Slate is mainly composed of the minerals quartz, and muscovite or illite. Slate can often be formed with several other minerals: biotite, chlorite, hematite, pyrite and less frequently: apatite, graphite, kaolinite, magnetite, tourmaline, zircon and feldspar. The purple slates of North Wales, ferrous reduction spheres form around iron nuclei and can leave a light green spotted texture.
Heat & Thermal Resistance
An ideal worktop choice for areas of high heat, however, long exposure to hot or cold temperatures may cause the slate to delaminate (divide into layers).
Stain Resistance Slate
Slate is highly susceptible to Staining. Calcified hard water deposits may appear under pots or items that have prolonged contact with the slate surface. Sealing is strongly advised.
Scratch Resistant Slate
Being 5 to 6 on the Moh's scale of hardness, slate is highly scratch resistant. Marks do appear easily on some slate worktops. Most scratches can be buffed out with mineral oil or a stain pen.
Sunlight & UV Resistance
Slate is naturally resistant to sunlight and UV rays and perfect for indoor and outdoor use in direct or natural light.
