Porphyry is an igneous rock which means it is produced by volcanic eruptions. These chippings have a nice green-gray color and a high hardness and resistance. This makes Porphyry green best known for the usage as ballast under railway rails and therefore ideal to use where pressure resistance is important.
- • Type of stone: Igneous rock
- • Hardness: Very high
- • Specific gravity: ± 1500 kg per m3
- • Colour: Green - gray
- • Shape: Angular (broken)
Delivery options and available sizes
|Loose bulk loads||