(a)

38 - 40% medium grade ore

Mn

40% (Min.)

Rejection

Below 38%

SiO₂

6% Max.

Al₂O₃

8% Max.

SiO₂ + Al₂O₃

14% Max.

Fe

16% (Min.)

Phos

0.12% Max.

Physical size

10mm to 40mm

(b)

42 - 44% grade ore

Mn

44% (Min.)

Rejection

Below 42%

SiO₂

5% Max.

Al₂O₃

7% Max.

SiO₂ + Al₂O₃

12% Max.

Fe

14% Max.

Phos

0.10% Max.

Physical size

10mm to 40mm

(c)

46 - 48% grade ore

Mn

48% (Min.)

Rejection

Below 46%

SiO₂

4% Max.

Al₂O₃

5% Max.

SiO₂ + Al₂O₃

9% Max.

Physical size

10mm to 40mm

(d)

78 - 80% Mn Dioxide

MnO₂

78 - 80%

Fe

6 - 8% Max. Typical less than 5% Fe

Physical size

10mm to 60mm

(e)

80 - 84% Mn Dioxide

MnO₂

82 - 84%

Fe

3.5% Max.

Physical size

10mm to 60mm