Table 4 Matrix of three principal components

Fe

0.927

−0.221

−0.059

Al

0.789

−0.541

−0.053

Ca

−0.355

0.846

−0.044

K

0.277

0.148

0.853

Ti

0.840

0.015

−0.287

Mn

0.507

0.004

−0.663

Zr

−0.854

0.175

−0.085

Sr

−0.189

0.927

0.237

Rb

0.911

0.211

0.174

Zn

−0.161

0.031

0.745

Sn

0.280

−0.185

0.701

P

0.174

0.789

−0.162

Ba

0.600

−0.122

0.172

Eigenvalue (total)

5.149

2.473

2.253

% of total variance

39.610

19.020

17.331

Cumulative % of variance

39.610

58.630

75.961