Skip to main content

Table 1 Sizes and surface areas of different stone particles

From: Different particle determinants induce apoptosis and cytokine release in primary alveolar macrophage cultures

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