Type of rock parameter no. of analyses

Ultramafic (peridotite)

n = 287

Mafic (gabbro)

n = 1.451

Intermediate (diorite)

n = 872

Felsic (granite)

n = 2.485

SiO₂

45.31

51.06

58.58

72.04

TiO₂

0.52

1.17

0.96

0.30

Al₂O₃

4.38

15.91

16.98

14.42

Fe₂O₃

4.28

3.10

2.55

1.22

FeO

7.48

7.76

5.13

1.68

MnO

0.26

0.12

0.12

0.05

MgO

31.19

7.68

3.73

0.71

CaO

5.5

9.88

6.66

1.82

Na₂O

0.55

2.48

3.60

3.69

K₂O

0.3

0.96

1.81

4.12

P₂O₅

0.11

0.24

0.29

0.12

Minerals

Ol. Py

Py. Pl. Hb. Bi

Pl. Hb. Bi

Pl. Kspar. Bi. Qtz