Chemical elements

Techniques used

Content (%)

Limestone

Basalt

SiO₂

Insolubilization

2.84

51.59

Al₂O₃

Coloring and reading by Spectrophotometer

0.09

1.84

Fe₂O₃

Coloring and reading by Spectrophotometer

0.44

12.71

CaO

Complexometry (EDTA)

50.05

19.27

MgO

Complexometry (EDTA)

2.53

6.29

Na₂O

Flame photometry

1.33

2.81

K₂O

Flame photometry

0.35

1.05

TiO₂

Coloring and reading by Spectrophotometer

0.03

0.8

MnO

Coloring and reading by Spectrophotometer

0.01

0.02

P₂O₅

Coloring and reading by Spectrophotometer

0.09

0.09

SO₃

Precipitation by BaCl₂

1.26

0.21

H₂O

Steaming at 105˚ for 24 hours

0.12

0.87

Fire losses

Calcination at 950˚

40.91

2.44