Isotope

Penikat, Finland, pyrite

Talnakh, Russia, chalcopyrite

Overlapping of oxide masses allowed tor by ELAN software

Intensity correction subtracted from definite intensity*

Concentration, ppm

RSD, %, n = 81

Concentration, ppm

RSD, %, n = 81

¹³⁹La

0.63 ± 0.03

4.8

0.020 ± 0.001

5.0

¹⁴⁰Ce

1.557 ± 0.007

0.4

0.050 ± 0.003

6.0

^14lPr

0.194 ± 0.004

2.1

0.0092 ± 0.0008

8.7

¹⁴³Nd

0.82 ± 0.03

3.7

0.054 ± 0.003

5.6

0.125653·Int(¹⁴⁰Ce)

¹⁵²Sm

0.144 ± 0.007

4.9

0.028 ± 0.002

7.1

CeO, BaO

0.01278·Int(¹⁵⁷Gd)

¹⁵¹Eu

0.0147 ± 0.0005

3. 4

0.0066 ± 0.0006

9.1

BaO

¹⁵⁷Gd

0.0794 ± 0.0012

1.5

0.0460 ± 0.0005

1.1

LaO, CeO, PiO

0.004016·Int(^l63Dy)

¹⁵⁹Tb

0.010 ± 0.001

10

0.0076 ± 0.0007

9.2

NdO, PrO

¹⁶⁴Dy

0.044 ± 0.002

4.5

0.047 ± 0.003

6.4

NdO, SmO

0.047902·Int(¹⁶⁶Ег)

¹⁶⁵Ho

0.0068 ± 0.0006

8.8

0.0095 ± 0.0006

6.3

SmO

¹⁶⁶Er

0.0165 ± 0.0005

3.0

0.025 ± 0.002

8.0

SmO, NdO

^I67Er

EuO, SmO

¹⁶⁹Tm

0.0022 ± 0.0002

9.1

0.0029 ± 0.0003

10.3

¹⁷⁴Yb

0.0089 ± 0.0005

5.6

0.019 ± 0.001

5.3

GdO, DyO

0.005865·Int(¹⁷⁸Hf)

¹⁷⁵Lu

0.0013 ± 0.0001

7.7

0.0022 ± 0.0002

9.1

GdO, TbO

⁸⁹Y

0.150 ± 0.006

4.0

0.34 ± 0.03

8.8

¹³⁷Ba

10.6 ± 0.5

4.7