Typical %

Calcium carbonate as CaCO₃

93,5

Magnesium as MgCO₃

2,2

Silica as SiO₂

2,5

Manganese as Mn₂O₃

0,8

Iron as Fe₂O₃

0,5

Aluminium as Al₂O₃

0,3

Sulphur as SO₃

<0,05

Phosphorus as P₂O₅

<0,005

Ignition loss

43,1

Bulk density (kg/m3):

1 500

1 700

Size:

Screen aperture
(?m)

% retained (typical)

5 000
3 350
125
75
minus 75

0
5
70
5
20

Colour: Blue grey to white because of finely powdered composition.

Angle of repose: 30°- 40°