Natural
Stone Suppliers from India
|
Slatestone Varieties /
Colors |
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| PHYSICAL PROPERTIES OF SLATE | |
| Hardness | 2.5 to 4.0 on Moh's scale |
| Modulus of Rupture | 450 to 850 Kg/cm2 |
| Compressive Strength | 170 to 240 Kg/cm2 |
| Specific Gravity | 2.65 to 2.80 |
| Porosity | Low to very low |
| Water Absorption | 1.0 to 1.5% |
| Weather Impact | Resistant |
| Corrodibility | 0.4 to 0.7% |
| CHEMICAL PROPERTIES OF SLATE | |
| Chemically they are Multi-Mineral rocks made of an aggregate of minerals and colloidal substances. Essentially mineral composition includes members of Mica group commonly sericite & muscovite, Clay group commonly paragonite, chlorite & kaonilite. The accessory minerals are oxides, calcites & minor amounts of quartz and feldspar along with subordinate amounts of ferromagnesian minerals. Free silica is normally poor. It is resistant to acids and staining. |
