Mineral

Parameter

Control-clay

P-clay

P-Pb-clay

Montmorillonite

X_m

500

322.6

500

K

0.015

0.023

0.0168

R²

0.99

0.99

0.99

Allophane

X_m

370.4

500

476.2

K

0.014

0.041

0.0225

R²

0.98

0.98

0.99

Kaolinite

X_m

37.5

74.1

78.1

K

0.0027

0.015

0.0674

R²

0.89

0.97

0.97