Whitton Fell Sandstone

Stone name: Whitton Fell Sandstone
Geological type: Carboniferous sandstone
Colour/texture: Buff with pink intrusions, fine to medium grained
Maximum size: Lengths over three metres have been supplied
Density: 2201kg per cubic metre
Water absorption: 4.94%
Compressive strength: 42 N/mm2
Freeze thaw resistance: Tests indicate that failure due to frost action is unlikely

Peak Moor

Stone name: Peak Moor
Geological type: Carboniferous / Millstone grit
Water Absorption: 10.49 %
Porosity: 4.69 %
Density: 2240 kg/m3
Abrasion Resistance: 26.8 Compressive Strength: 71 MPa
Durability: Pass. Change in flexural Slip Resistance: Dry 94 Wet 79
Flexural Strength: 7.64 MPa Acid Immersion: Pass

Stanton Moor

Stone name: Stanton Moor
Geological type: Carboniferous / Millstone grit
Colour/texture: Buff with pink or gold - fine to medium grained
Petrographic description: Sub-Arkose sandstone
Apparent density: 2250 Kgm3
Open Porosity: 13.71% Water absorption: 4.4% (by wt)
Flexural strength: 6.0 MPa Frost resistance: 9.72 MP
Compressive strength: 71.66 MP Water Absorption by Capillarity: 33.76 g/m2/

Birchover Gritstone

Stone name: Birchover Gritstone
Geological type: Mill stone grit
Colour/texture: Pink to buff, medium to fine-grained grit-stone without visible laminations
Maximum size: Up to three metres in length have been supplied
Density: 2250kg per cubic metre
Water absorption: 4.3%
Compressive strength: 60-70 N/mm2
Freeze thaw resistance: Tests indicate that failure due to frost action is unlikely

Ann Twyford

Stone name: Ann Twyford
Colour/texture: Pink to buff, medium to fine-grained grit-stone without visible laminations
Maximum size: Up to three metres in length have been supplied
Density: 2250kg per cubic metre
Water absorption: 4.3%
Compressive strength:60-70 N/mm2
Freeze thaw resistance: Tests indicate that failure due to frost action is unlikely

Hayfield Gritstone

Stone name: Hayfield Gritstone
Geological type: Mill stone grit
Colour/texture: Various buff-blue pink colourings medium-fine grained
Maximum size: Up to three metres in length have been supplied
Density: 2400kg per cubic metre
Water absorption: 2.3%
Compressive strength:110 N/mm2
Freeze thaw resistance: Tests indicate that failure due to frost action is likely if in incorrect application or failing to be maintained correctly

Morley Yorkstone

Stone name: Morley Yorkstone
Geological type: Carboniferous sandstone
Colour/texture: Buff green with blue intrusions, fine to medium grained
Maximum size: Lengths over three metres have been supplied
Density: 2400kg per cubic metre
Water absorption: 4%
Compressive strength:54 N/mm2
Freeze thaw resistance: Tests indicate that failure due to frost action is unlikely

Copper Cragg

Stone name: Copper Cragg
Geological type: Carboniferous Westphalian sandstone
Colour/texture: Cream coloured with brown speckling, occasional large dark discoloured areas
Maximum size: Up to three metres in length have been supplied
Density: 2130kg per cubic metre
Water absorption: 5.7%
Compressive strength:75.5 N/mm2
Freeze thaw resistance: Tests indicate that failure due to frost action is unlikely

Yorkshire Coarse Gritstone

Stone name: Yorkshire Coarse Gritstone
Geological type: Mill stone grit
Colour/texture: Sandy buff with coarse large grit present without visible laminations
Maximum size: Up to three metres in length have been supplied
Density: 2350kg per cubic metre
Water absorption: 9.1%
Compressive strength:50-60 N/mm2
Freeze thaw resistance: Tests indicate that failure due to frost action is unlikely

York Stone

Stone name: York Stone
Geological type: Carboniferous sedimentary rock
Colour/texture: Buff to grey with some natural bed lines, fine grained
Maximum size: Up to three metres in length have been supplied
Density: 2402kg per cubic metre
Water absorption: 2.76%
Compressive strength:132 N/mm2
Freeze thaw resistance: Tests indicate that failure due to frost action is unlikely