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Swiss Journal of Geosciences

Table 10 Composition of chlorite from four samples of TGU Grt-Ph schist

From: The Theodul Glacier Unit, a slab of pre-Alpine rocks in the Alpine meta-ophiolite of Zermatt-Saas, Western Alps

 

KB 860

OK-Z129

OK-Z131

OK-Z133

61/1

64/1

Chl3

Chl4

Chl7

Chl-ES1

Chl-ES2

Chl-ES1

Chl1

Chl4

SiO2

25.92

26.08

27.39

27.46

25.47

25.31

25.00

28.02

25.98

25.13

Al2O3

22.85

22.44

21.14

21.37

21.39

22.60

22.46

21.08

22.24

22.11

FeO

23.49

23.89

19.06

19.54

25.47

24.69

24.95

16.66

22.32

24.16

MnO

0.3

0.27

0.18

0.12

0.36

0.32

0.25

0.05

0.27

0.29

MgO

15.92

16.24

19.89

19.6

14.64

14.79

14.68

22.75

16.59

15.05

Total

88.48

88.92

87.66

88.09

87.33

87.711

87.35

88.56

87.4

86.74

Si

2.667

2.678

2.78

2.778

2.695

2.649

2.637

2.774

2.691

2.654

Al(IV)

1.333

1.322

1.22

1.222

1.305

1.351

1.363

1.226

1.309

1.346

Al(VI)

1.437

1.393

1.31

1.325

1.363

1.436

1.428

1.234

1.407

1.406

Fe2+

2.021

2.051

1.618

1.653

2.254

2.161

2.200

1.379

1.933

2.134

Mn

0.026

0.023

0.016

0.01

0.033

0.028

0.023

0.004

0.024

0.026

Mg

2.442

2.486

3.01

2.956

2.309

2.308

2.308

3.358

2.562

2.370

XFe

0.45

0.45

0.35

0.36

0.49

0.48

0.49

0.29

0.43

0.47

  1. Traces of Ti, Cr, Ca, Na and K (all < 0.1 wt%), concentrations in wt%, formulas per 14 oxygen
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