====== Silicate Earth composition based on CI Carbonaccous Chondrites (total) ====== Source: McDonough W.F., Sun S.-s. The composition of the Earth, Chemical Geology 120 (1995) 223-253. element;units;orig_value;value Li;ppm;1.5;0.000150000 Be;ppm;0.025;0.000002500 B;ppm;0.9;0.000090000 C;ppm;3.5;0.000350000 N;ppm;3180;0.318000000 F;ppm;60;0.006000000 Na;ppm;5100;0.510000000 Mg;pt;9.65;9.650000000 Al;pt;0.86;0.860000000 Si;pt;10.65;10.650000000 P;ppm;1080;0.108000000 Si;pt;5.4;5.400000000 Cl;ppm;680;0.068000000 K;ppm;550;0.055000000 Ca;pt;0.925;0.925000000 Sc;ppm;5.92;0.000592000 Ti;ppm;440;0.044000000 V;ppm;56;0.005600000 Cr;ppm;2650;0.265000000 Mn;ppm;1920;0.192000000 Fe;pt;18.1;18.100000000 Co;ppm;500;0.050000000 Ni;ppm;10500;1.050000000 Cu;ppm;120;0.012000000 Zn;ppm;310;0.031000000 Ga;ppm;9.2;0.000920000 Ge;ppm;31;0.003100000 As;ppm;1.85;0.000185000 Se;ppm;21;0.002100000 Br;ppm;3.57;0.000357000 Rb;ppm;2.3;0.000230000 Sr;ppm;7.25;0.000725000 Y;ppm;1.57;0.000157000 Zr;ppm;3.82;0.000382000 Nb;ppb;240;0.000024000 Mo;ppb;900;0.000090000 Ru;ppb;710;0.000071000 Rh;ppb;130;0.000013000 Pd;ppb;550;0.000055000 Ag;ppb;200;0.000020000 Cd;ppb;710;0.000071000 In;ppb;80;0.000008000 Sn;ppb;1650;0.000165000 Sb;ppb;140;0.000014000 Te;ppb;2330;0.000233000 I;ppb;450;0.000045000 Cs;ppb;190;0.000019000 Ba;ppb;2410;0.000241000 La;ppb;237;0.000023700 Ce;ppb;613;0.000061300 Pr;ppb;92.8;0.000009280 Nd;ppb;457;0.000045700 Sm;ppb;148;0.000014800 Eu;ppb;56.3;0.000005630 Gd;ppb;199;0.000019900 Tb;ppb;36.1;0.000003610 Dy;ppb;246;0.000024600 Ho;ppb;54.6;0.000005460 Er;ppb;160;0.000016000 Tm;ppb;24.7;0.000002470 Yb;ppb;161;0.000016100 Lu;ppb;24.6;0.000002460 Hf;ppb;103;0.000010300 Ta;ppb;13.6;0.000001360 W;ppb;93;0.000009300 Re;ppb;40;0.000004000 Os;ppb;490;0.000049000 Ir;ppb;455;0.000045500 Pt;ppb;1010;0.000101000 Au;ppb;140;0.000014000 Hg;ppb;300;0.000030000 Tl;ppb;140;0.000014000 Pb;ppb;2470;0.000247000 Bi;ppb;110;0.000011000 Th;ppb;29;0.000002900 U;ppb;7.4;0.000000740