sample nb.

132-1

132-1

132-1

TiO₂ (wt%)

2.92

2.48

2.85

Al₂O₃

32.62

32.64

28.78

Cr₂O₃

14.90

14.26

16.15

FeO

33.62

35.77

39.57

MnO

0.32

0.23

0.50

MgO

14.11

13.65

10.84

CaO

0.01

0.00

0.06

Total

98.73

99.04

98.74

Fe₂O₃ (calc)

17.82

19.36

19.58

FeO (calc)

17.58

18.34

21.95

Total (calc)

100.52

100.98

100.7

Ti (apfu)

0.516

0.439

0.522

Al

9.042

9.044

8.259

Cr

2.771

2.651

3.109

Fe³⁺

3.154

3.426

3.588

Fe²⁺

3.458

3.607

4.471

Mn

0.063

0.046

0.102

Mg

4.949

4.786

3.934

Ca

0.003

0.000

0.015