Intro: Springwell Sandstone (I4)
I4 <stone name> Reference I4 NAME Springwell TYPE Sandstone GEOLOGY Upper Carboniferous. Coal Measures COUNTY Tyne and Wear COLOUR Buff TEXTURE Fine to medium grained BLOCK SIZE LXBXH (mm) 1200mm depth on bed SUITABILITY Ashlar, cladding and general building USES (1) Culzean Castle, Ayrshire USES (2) County Hall, Durham USES (3) Leith Walk,…