Red split Basque red is a red ornamental split, originating from the Basque Country from former coal mines. The split is burned after extraction, which is why the split is also called a burnt mine split. Red mine stone does not have a high hardness and is therefore better not to be used as a split on more heavily loaded driveways and parking lots, but as an ornamental split in the garden or on walkways.Properties• Rock: Mixed (including slate)• Hardness: Fairly low• Color red• Specific weight: ± 1000kg per m3• Suitable for 13m2• Shape: Angular (broken) and fairly flat• Gravel plate or root cloth available as an option.+ Retaining straps and edge closures available as options.