Rock Type

Elements

As

Cr

Cu

Fe

Mn

Ni

Pb

Sb

Zn

Unaltered Ultramafics

13.0

2280

25.2

76,000

1130

1080

4.55

7.67

74.5

Altered Ultramafics

139

2360

113

133,000

4390

1010

38.5

23.4

197

Unaltered Felsics

18.5

30.0

29.0

20,200

266

10.7

8.00

9.67

53.0

Altered Felsics

244

152

250

223,000

3060

107

59.7

30.4

299