| Property | Value |
| Absorption | 1.21% |
| Compressive strength across strata | 18,255 lb/in2 |
| Compressive strength with strata | 12,388 lb/in2 |
| Flexural strength across strata | 2,977 lb/in2 |
| Flexural strength with strata | 2,180 lb/in2 |
| Abrasion (Thermal face) | 28.2 |
| Abrasion (Natural cleft) | 11.2 |
| Specific gravity | 2.604 |
| Weight per cubic foot | 162.5 lbs |
