Sample No

Mn (ppm)

Sr (ppm)

Zn (ppm)

Pb (ppm)

Fe (ppm) × 10³

GB1

1760

193

88

97

6.54

GB2

851

256

102

113

1.61

GB3

667

213

102

108

1.79

GB4

740

369

107

270

2.04

GB5

545

205

95

91

5.55

GB6

733

389

132

96

8.86

GB7

880

266

122

136

1.52

GB8

658

499

86

88

5.97

GB9

743

694

95

122

7.11

GB10

843

692

153

117

5.73

GB11

953

348

157

115

2.81

GB12

545

450

70

77

9.17

GB14

943

497

124

108

4.85

GB15

638

689

94

107

6.06

GB16

973

628

124

121

3.19

GB17

829

569

127

120

3.52

GB18

977

637

120

111

5.20

GB19

823

346

143

114

2.17

GB20

927

509

138

102

5.7

Mean

841.3

444.6

114.6

116.4

4.70