GERM Partition Coefficient (Kd) Database
Development and Maintenance by the EarthRef.org Database Team
Data contribution by Roger Nielsen

Partition Coefficients      
Rock Type Mineral Z Elem Value SD Low High Kd Type Info Reference
High Silica Rhyolite Allanite 21 Sc     49.4 62.3 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 24 Cr     369 391 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 25 Mn     17.1 19.1 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 27 Co     41 44 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 30 Zn     24 30 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 57 La     2362 2827 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 58 Ce     2063 2494 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 60 Nd     1400 1840 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 62 Sm     756 977 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 63 Eu     100 122 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 65 Tb     235 311 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 66 Dy     123 150 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 70 Yb     24.5 37 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 71 Lu     22 44 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 72 Hf     9.8 28 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 73 Ta     1.9 4.4 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 90 Th     420 548 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Allanite 92 U     14 17 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 21 Sc     13.1 18.1 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 24 Cr     3.7 6.7 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 25 Mn     7.9 13.4 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 27 Co     79 101 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 30 Zn     13 19 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 37 Rb     3 5.3 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 55 Cs     1.2 3.1 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 56 Ba     3.7 7 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 57 La     2.59 3.55 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 58 Ce     2.15 3.49 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 60 Nd     1.8 2.7 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 62 Sm     1.28 1.76 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 63 Eu     0.73 1 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 65 Tb     0.66 1.3 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 66 Dy     0.5 1.05 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 70 Yb     0.32 0.69 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 71 Lu     0.39 0.8 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 72 Hf     0.47 0.68 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 73 Ta     1.31 1.36 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 90 Th     0.511 1.74 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Biotite 92 U     0.131 0.19 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 21 Sc     109 172 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 25 Mn     30 34 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 27 Co     6 17 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 30 Zn     7.2 20.7 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 57 La     2.8 24 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 58 Ce     3.5 21.6 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 60 Nd     5.3 17 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 62 Sm     6.21 14 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 63 Eu     5.2 12 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 65 Tb     4 6.9 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 66 Dy     4.5 6.4 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 70 Yb     4.5 6.4 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 71 Lu     6.1 8.1 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 72 Hf     0.3 2.04 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 73 Ta 0.101       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 90 Th     0.36 3.44 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Clinopyroxene 92 U     0.12 1.01 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 21 Sc     4.8 9.3 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 25 Mn     56 77 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 27 Co     6 23 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 30 Zn     10.4 11.1 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 42 Mo     0.1 1.4 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 57 La     1.08 23.3 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 58 Ce     0.93 20.4 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 60 Nd     0.77 14 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 62 Sm     0.496 8.4 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 63 Eu     0.09 5.8 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 65 Tb     0.31 2.85 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 66 Dy     0.9 3.3 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 70 Yb     0.92 1.96 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 71 Lu     1.26 2.21 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 72 Hf     0.12 1.78 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 73 Ta 0.098       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 90 Th     0.276 3.172 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Fayalite, Olivine 92 U     0.12 0.69 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 21 Sc 18.5       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 25 Mn 27       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 27 Co 26       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 30 Zn 7.8       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 42 Mo 11       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 57 La 1.31       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 58 Ce 1.19       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 60 Nd 0.96       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 62 Sm 0.684       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 63 Eu 0.4       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 65 Tb 0.36       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 66 Dy 0.37       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 70 Yb 0.55       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 71 Lu 0.74       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 72 Hf 0.65       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 73 Ta 18       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 90 Th 0.427       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Ilmenite 92 U 0.063       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 21 Sc     0.024 0.059 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 25 Mn     0.011 0.035 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 26 Fe     0.11 0.2 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 27 Co     0.09 0.39 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 30 Zn     0.041 0.09 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 37 Rb     0.31 0.74 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 55 Cs     0.009 0.061 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 56 Ba     1 6.7 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 57 La     0.037 0.111 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 58 Ce     0.031 0.095 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 60 Nd     0.013 0.093 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 62 Sm     0.014 0.0458 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 63 Eu     2 3.5 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 65 Tb     0.012 0.092 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 66 Dy     0.006 0.15 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 70 Yb     0.005 0.024 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 71 Lu     0.008 0.07 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 72 Hf     0.0052 0.031 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 73 Ta     0.0045 0.029 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 90 Th     0.0095 0.0253 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite K-Feldspar 92 U     0.008 0.037 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 21 Sc     18.1 96 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 25 Mn     25.4 57 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 27 Co     56 196 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 30 Zn     7.5 19 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 56 Ba     35 2.3 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 57 La     10.8 18 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 58 Ce     9 15.6 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 60 Nd     7.8 14 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 62 Sm     6.47 11.75 Experimental Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 63 Eu     2.4 5.4 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 65 Tb     4.7 10.5 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 66 Dy     3.3 10.3 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 70 Yb     2.1 5 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 71 Lu     2.1 4.8 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 73 Ta     0.72 1.29 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 90 Th     5.3 7.76 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Low Calcium Pyroxene 92 U     0.07 0.35 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 21 Sc     8.9 12.4 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 25 Mn     21.6 27.9 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 27 Co     13 197 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 30 Zn     22 41 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 42 Mo 29       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 57 La     11 32 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 58 Ce     9.7 26 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 60 Nd     6.9 18.6 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 62 Sm     3.77 12.5 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 63 Eu     0.9 7.2 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 65 Tb     2 7.5 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 66 Dy 2.4       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 70 Yb 1.34       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 71 Lu 1.4       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 73 Ta     0.74 2.73 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 90 Th     1.63 13.1 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Magnetite 92 U 0.74       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 21 Sc     60.3 77 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 24 Cr     119 260 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 25 Mn     1.26 1.78 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 27 Co     9 23 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 57 La     7.2 26.6 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 58 Ce     10 23.5 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 60 Nd     4.6 22 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 62 Sm     11.1 17.7 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 63 Eu     12 20 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 65 Tb 37       Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 66 Dy     95 108 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 70 Yb     490 564 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 71 Lu     635 648 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 72 Hf     2645 3742 Phenocryst-Matrix Mahood & Hildreth 1983
High Silica Rhyolite Zircon 73 Ta     40.2 54.8 Phenocryst-Matrix Mahood & Hildreth 1983
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