N2
N3
| Reference | N2 | N3 |
| NAME | Burlington Blue (honed) | Burlington Blue (riven) |
| TYPE | Slate | Slate |
| GEOLOGY | Silurian | Silurian |
| COUNTY | Cumbria | Cumbria |
| COLOUR | Blue/black | Blue/black |
| TEXTURE | Extremely fine grained. Pronounced cleavage | Extremely fine grained. Pronounced cleavage |
| BLOCK SIZE LXBXH (mm) | 1500x900mm | 1500x900mm |
| SUITABILITY | Roofing, cladding, paving, cills, copings and fireplaces | Roofing, cladding, paving, cills, copings and fireplaces |
| USES (1) | ||
| USES (2) | ||
| USES (3) | ||
| USES (4) | ||
| Stone Names | Wray Castle formation | Wray Castle formation |