SAMPLE

O

(w%)

Na

(w%)

Mg

(w%)

Al

(w%)

Si

(w%)

P

(w%)

S

(w%)

Cl

(w%)

K

(w%)

Ca

(w%)

Mn

(w%)

Fe

(w%)

Zn

(w%)

Scaling 4

27.9

1.1

0.5

0.2

0.7

ND

1.5

2.2

0.3

5.2

ND

60.3

ND

Newly cut surface

ND

ND

ND

ND

0.3

ND

ND

ND

ND

ND

1.4

98.3

ND

Exposed inner tubing

36.2

ND

2.6

1.6

6.4

0.3

2.0

2.0

1.0

2.6

ND

43.9

1.4