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Progress in Earth and Planetary Science

Table 3 Activity coefficients for REE in oldhamite

From: The message of oldhamites from enstatite chondrites

 

La

Ce

Pr

Nd

Sm

Eu

Gd

Tb

Dy

Ho

Er

Tm

Yb

Lu

γ(REE2+)

     

1.49

      

3

 

γ(REE3+)

1617

970

693

539

441

431a

422

441

462

511

571

647

764 a

882

  1. All coefficients apply to REE3+, except for Eu2+ and Yb2+, which have also been considered. Given the oxygen fugacity range, Ce4+ has not been considered here
  2. aFor Eu3+ and Yb3+, activity coefficients have been interpolated from other REE3+ values
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