Sources

Specific gravity

Specific surface area (m²/kg)

Bulk density (kg/m³)

Particle size (μm)

Color

[23]

2.00

183.3

-

3.80 - 5.6

-

[24]

2.11

-

-

11.5 - 18.3

-

[25]

2.35

-

236

10 - 40

-

[26]

2.82

460.0

-

-

-

[27]

2.14

462.0

-

<45

-