Intro: Trevillett Slate (N8) Cornish (and Devon) Slate
<image>Trevillet Reference N8 NAME Trevillett (honed) TYPE Slate GEOLOGY Devonian. Upper Devonian Slate Beds COUNTY Cornwall COLOUR Blue/grey/green. Pyrite grains common TEXTURE Fine grained. Pronounced irregular cleavage BLOCK SIZE LXBXH (mm) SUITABILITY Roofing and flooring USES (1) USES (2) USES (3) USES (4) Stone Names Tredorn Phyllites