Physically, these are recrystallized, Hard, Compact, fine to very fine grained metamorphosed rocks capable of taking shining polish.
| Hardness | 3 to 4 on Moh's Scale |
| Density | 2.55 to 2.7 Kg/cm3 |
| Compressive Strength | 70 to 140 N/mm2 |
| Modulus of Rupture | 12 to 18 N/mm2 |
| Water Absorption | Less than 0.5% (except Rainforest Green/Brown with 2-3%) |
| Porosity | Quite low |
| Weather Impact | Resistant |
Chemically, they are crystalline rocks composed predominantly of calcite, dolomite or serpentine minerals. The other minor constituents vary from origin to origin.
| Lime (CaO) | 28-32% |
| Silica (SiO2) | 3-30% (varies with variety) |
| MgO | 20 to 25% |
| FeO + Fe2O3 | 1-3% |
| Loss On Ignition (LOI) | 20-45% |
Natural Mint Sandstone tiles, random crazy, pool coping and wall cladding...
Location : Australia
