Lithology of sample

mass fraction/%

SiO₂

Al₂O₃

Fe₂O₃

MnO

TiO₂

P₂O₅

Stromatolites

2.53

0.05

0.48

0.36

0.02

0.01

Argillaceous banded limestone

17.62

0.27

5.49

2.37

0.03

0.01

Bioclastic limestone

9.04

0.14

2.66

1.19

0.09

0.18

Dolomitic limestone

2.23

0.04

0.21

0.16

0.00

0.01