Table 1 Sizes and surface areas of different stone particles
Stone particles | Size fraction (μm) | Median diameter (μm) | Particle surface (m 2 /g) |
|---|---|---|---|
Quartz | ≤ 0.5 | 0.4 | 14.1 |
≤ 2 | 1.2 | 7.4 | |
≤ 10 | 8.0 | 2.5 | |
Hornfels | ≤ 2 | 1.8 | 15.0 |
≤ 10 | 6.6 | 7.0 | |
Fine grain syenite porphyr | ≤ 2 | 1.3 | 12.2 |
≤ 10 | 5.7 | 5.3 | |
Microsilica | ≤ 0.3 | 0.3 | 17.6 |
Gabbro | ≤ 10 | 6.9 | 3.4 |
Mylonite | ≤ 10 | 5.5 | 5.0 |
Basalt | ≤ 10 | 5.0 | 7.0 |
Feldspar | ≤ 10 | 5.6 | 3.6 |