Table 2

Estimates of HSE abundances (in ng.g−1) and 187Os/188Os in various planetary reservoirs (in ng.g−1) calculated using methods outlined in this review.

ReservoirRe (± 1σ)Os (± 1σ)Ir (± 1σ)Ru (± 1σ)Pt (± 1σ)Rh (± 1σ)Pd (± 1σ)Au (± 1σ)187Re/188Os (± 1σ)187Os/188Os (± 1σ)187Os/188Osc8DPUM186Os/188Os (± 2σ)
Terrestrial Mantle10.35 ± 0.063.9 ± 0.53.5 ± 0.47 ± 0.97.6 ± 1.31.2 ± 0.27.1 ± 1.31.7 ± 0.50.42530.1296 ± 0.0080.1292−0.30.119837 ± 0.000005
Terrestrial Mantle (MgO)20.23 ± 0.053.1 ± 0.53 ± 0.56 ± 110 ± 29 ± 1.50.3516-0.1233−4.8-
Lunar Crust30.0029 ± 0.00010.0014 ± 0.00030.0015 ± 0.00060.0068 ± 0.0270.016 ± 0.015-0.033 ± 0.030.028 ± 0.030.1547– 0.2248Unknown
Lunar Mantle (MgO)20.010.10.10.10.20.10.47390.129 ± 0.0020.13312.7Unknown
Lunar Mantle (MgO)40.009 ± 0.0060.097 ± 0.030.087 ± 0.040.162 ± 0.050.211 ± 0.130.151 ± 0.10.43190.13 ± 0.0060.1293−0.2Unknown
Lunar Mantle (I-HSE)50.0040.070.070.10.10.030.2708-0.1169−10-
Martian Mantle60.3 ± 0.33.7 ± 2.93.3 ± 35.3 ± 4.93.7 ± 3.6-2.3 ± 2.1-0.38430.1284 ± 0.0030.1260−2.8Unknown
Martian Mantle (I-HSE)50.12.42.43430.1975-0.1110−14-
Martian Mantle (Exp.)70.051.82.21.84.984.220.630.13330.1057−18
  • Notes:

  • 1 Re, Os, Ir, Ru, Pt, Pd from Becker et al. (2006) and Au and Rh from Fischer-Gödde et al. (2011) assuming primitive mantle Al2O3 of 4.25 ± 0.25 wt.% 187Os/188Os from Meisel et al. (2001);

  • 2 Estimates from Day et al. (2007);

  • 3 Lunar crustal compositions from Day et al. (2010);

  • 4 Estimate of lunar mantle using data from Day et al. (2007) and Day and Walker (in review);

  • 5 Estimates using inter-element method of Dale et al. (2012);

  • 6 Estimate of martian mantle given in Day (2013) and derived from MgO regression method using data in Brandon et al. (2012);

  • 7 Experimental constraints applying 14 GPa, 2100 °C partitioning from Righter et al. (2015);

  • 8 Values of 187Os/188Osc calculated assuming in-growth of 187Os as a function of Re/Os over 4.568 Ga of evolution from a Solar System initial 187Os/188Os = 0.0952. DPUM is difference in % from PUM estimate of 187Os/188Osc.