Table 2 SEM-EDS results from Spectrum 1 (rock matrix) and Spectrum 2 (fracture filling). Concentrations are given in weight percent (wt%) and atomic percent (at%).

From: Determining rock discontinuity fracture aperture and infilling characteristics using 3D X ray tomography with automated approach and multi method validation

Element

Spectrum 1 – Rock Matrix

Spectrum 2 – Fracture Filling

Wt%

At%

Wt%

At%

O

48.83

70.08

49.37

67.13

Mg

0.25

0.23

1.18

1.05

Al

0.46

0.39

6.40

5.16

Si

1.59

1.30

16.58

12.84

K

–

–

3.11

1.73

Ca

48.87

27.99

19.44

10.55

Fe

–

–

3.94

1.53

Total

100.00

100.00

100.00

100.00

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