|
SLATE |
|
| UF |
Longford Rustic Slate Rag Slate Riven Slate Swithland Slate |
| SN | Collective term for a hard, fine grained, dark coloured metamorphic rock, which splits easily; hence its common use as a roofing and flooring material, and a functional description for any rectangular, sheet, roofing material. |
| CL |
STONE |
| NT |
KILLAS
LAKE DISTRICT SLATE SCOTTISH SLATE WELSH SLATE WEST COUNTRY SLATE |
| RT |
FOREST STONE (LEICESTERSHIRE)
SHALE
|