13509-A

13509-B

64775

64777

COO-01

Volcanic rock

Volcanic rock

Volcanic rock

Volcanic rock

Intrusive rock

SiO₂ (wt%)

54.06

55.04

56.83

52.88

49.30

TiO₂

0.74

0.66

0.26

0.74

0.91

Al₂O₃

16.35

16.29

6.40

18.55

20.94

Fe₂O₃

9.14

8.98

8.23

12.06

8.63

MnO

0.38

0.37

0.22

0.18

0.29

MgO

4.74

4.82

1.05

3.20

3.00

CaO

6.21

4.26

15.03

3.38

5.50

Na₂O

0.83

0.50

0.01

1.04

0.00

K₂O

2.06

2.51

1.26

2.49

3.67

P₂O₅

0.15

0.14

0.05

0.17

0.18

LOI

5.34

6.43

10.67

5.29

7.57

Sum

100.00

100.00

100.00

100.00

100.00

Ba (ppm)

84.9

84.0

54.3

191.7

230.0

Co

n.m.

n.m.

n.m.

n.m.

17.50

Cr

55.1

47.0

54.7

64.0

11.0

Nb

14.7

10.7

10.7

2.1

3.0

Ni

24.1

24.3

35.3

37.4

8.4

Rb

44.3

49.9

25.7

49.4

59.5

Sr

198.3

102.2

36.7

159.1

49.5

Th

n.m.

n.m.

n.m.

n.m.

0.64

V

223.3

218.4

75.1

310.5

189.0

Y

20.2

17.1

12.5

25.4

20.5

Zr

100.5

90.3

36.8

62.9

20.7

Nb/Y

0.73

0.63

0.86

0.08

0.15

Zr/Y

4.98

5.28

2.94

2.48

1.01