Exp.

N˚

Normalized elemental composition (wt %)

Al

Si

S

K

Fe

Cu

Zn

As

Sb

1

1.4

2.0

10.5

0.4

19.1

60.6

-

1.1

-

2

1.5

2.6

6.2

0.3

28.4

23.6

0.4

7.6

1.6

3

1.9

2.5

10.2

0.4

21.2

41.1

0.9

3.3

0.8

4

2.3

2.4

8.8

0.3

24.3

29.1

-

5.2

1.1

5

1.5

2.3

15.4

0.5

23.9

47.1

-

4.1

1.0