Phases

Ore types

FeO

Al₂O₃

SiO₂

Hematite

HO

99.5

0.1

0.4

FO

98.7

0.6

0.6

SO

98.2

1.0

0.9

H (Secondary)

HO

91.9

7.1

1.0

FO

92.2

6.9

0.9

SO

94.6

4.2

1.2

Goethite

HO

89.1

8.1

2.8

FO

84.6

11.1

4.3

SO

91.4

6.8

1.8

Clay (Ferruginous)

HO

33.4

32.7

33.9

FO

14.3

38.2

47.6

SO

19.1

38.0

42.9

Gibbsite

HO

1.7

98.2

0.1

FO

4.1

95.2

0.7

SO

0.4

99.6

0.0