Category: Metamorphic

  Reference N9 NAME Trevillett (riven) 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) Buckstead Abbey, Abbey Farm  USES (2) Tavistock Town Hall  USES (3)  USES (4) Stone Names Tredorn Phyllites

  Reference N3 NAME Burlington Blue (riven) TYPE Slate GEOLOGY Silurian COUNTY Cumbria COLOUR Blue/black TEXTURE Extremely fine grained. Pronounced cleavage  BLOCK SIZE LXBXH (mm) 1500x900mm SUITABILITY Roofing, cladding, paving, cills, copings and fireplaces  USES (1)  USES (2)  USES (3)  USES (4) Stone Names Wray Castle formation

Reference N5 NAME Berwyn (riven) TYPE Slate GEOLOGY Silurian. Ludlow Beds COUNTY Clywd COLOUR Deep blue TEXTURE Extremely fine grained. Finely cleaved  BLOCK SIZE LXBXH (mm) 2500x1500x75mm SUITABILITY Roofing, cladding, paving, cills, copings and fireplaces  USES (1)  USES (2)  USES (3)  USES (4) Stone Names    

Reference N9 NAME Trevillett (riven) 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) Buckstead Abbey, Abbey Farm  USES (2) Tavistock Town Hall  USES (3)  USES (4) Stone Names Tredorn Phyllites

Reference N7 NAME Portmadoc (riven) TYPE Slate GEOLOGY Ordovician. Llandeilo Series COUNTY Gwynedd COLOUR Blue/grey. Occasional pyrite flecks TEXTURE Extremely fine grained. Finely cleaved  BLOCK SIZE LXBXH (mm) SUITABILITY Roofing, cladding, flooring and architectural  USES (1)  USES (2)  USES (3)  USES (4) Stone Names   Intro: Portmadoc Welsh Slate (N6) – Stone Library (shu.ac.uk) Intro:…

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Reference N1 NAME Kirkstone Brathay (riven) TYPE Slate GEOLOGY Ordovician. Borrowdale Volcanics Series COUNTY Cumbria COLOUR Blue/black TEXTURE Extremely fine grained. Pronounced cleavage  BLOCK SIZE LXBXH (mm) SUITABILITY Roofing, cladding, paving, cills, copings and fireplaces  USES (1)  USES (2)  USES (3)  USES (4) Stone Names Seathwaite Fell Sandstone Formation   Kirkstone Brathay (honed) (M10) Lake…

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Kirkstone Brathay (honed) Reference M10 NAME Kirkstone Brathay (honed) TYPE Slate GEOLOGY Ordovician. Borrowdale Volcanics Series COUNTY Cumbria COLOUR Blue/black TEXTURE Extremely fine grained. Pronounced cleavage  BLOCK SIZE LXBXH (mm) SUITABILITY Roofing, cladding, paving, cills, copings and fireplaces  USES (1)  USES (2)  USES (3)  USES (4) Stone Names Seathwaite Fell Sandstone Formation   Kirkstone Brathay…

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