Particle size (μm)

Weight %

Cumulative %

Mineralogical composition

20

52.8

52.8

Dominated with hematite (>80%), with less of carbon and calcite

32

11.7

64.5

Dominated with hematite (60% - 45%), with high calcite, quartz and carbon content

45

5.6

70.1

63

6.3

76.4

90

5.8

82.2

Dominated with hematite, carbon and calcite

100

1.6

83.8

Dominated with carbon, calcite and hematite with less quartz

125

3.4

87.2

250

12.4

99.6

Dominated with carbon, quartz and calcite with less hematite

Median (d50)

18.41μm

d₁₀ = 1.84

d₂₅ = 6.97

d₅₀ = 18.42

d₇₅ = 58.37

d₉₀ = 144.1

d₁₀₀ = 228.6