Thought this might be useful;
http://web.archive.org/web/200107200...data/foods.asp
Table V — Elements or Ions Present Percent of the Sample ICP Metals Formula One Formula Two Prime Reef Lancefish Silversides Seawater Aluminum 15.00 15.00 11.00 9.80 14.00 1.9 Antimony <0.50 <0.46 <0.52 <0.50 <0.38 0.00001 Arsenic <0.50 <0.46 <0.52 2.10 <0.38 0.024 Barium 0.55 0.73 0.72 <0.025 0.06 0.05 Beryllium 0.03 <0.023 0.03 <0.02 <0.02 0.0001 Boron <2.50 <2.3 <2.60 <2.50 <1.90 4.6 Cadmium 0.08 0.10 0.07 <0.02 0.02 0.00001 Calcium 800.00 1700.00 860.00 4700.00 4300.00 400 Chromium 0.28 0.07 0.12 1.10 1.30 0.00001 Cobalt 0.10 0.10 0.12 0.11 0.14 0.0001 Copper 2.30 1.80 2.00 24.00 36.00 0.09 Iodide 380.00 410.00 320.00 1500.00 1300.00 0.05 Iron 20.00 27.00 30.00 23.00 32.00 0.02 Lead <0.50 <0.46 <0.52 <0.50 <0.04 0.005 Lithium <0.25 <0.23 <0.26 <0.25 <0.02 0.1 Magnesium 280.00 290.00 290.00 520.00 560.00 1272 Manganese 4.40 13.00 14.00 3.40 15.00 0.01 Mercury <0.50 <0.46 <0.52 <0.52 <0.38 0.0003 Molybdenum <0.25 <0.23 <0.26 <0.25 <0.19 0.002 Nickel <0.25 <0.23 <0.26 <0.25 <0.19 0.0005 Phosphorus 1100.00 1200.00 900.00 4400.00 4000.00 0.012 Potassium 1000.00 990.00 230.00 2500.00 2200.00 380 Selenium 1.60 1.40 1.20 1.30 1.50 0.004 Silicon 59.00 75.00 56.00 22.00 29.00 4 Silver <0.50 <0.46 <0.52 <0.50 <0.38 0.0003 Sodium 1200.00 870.00 340.00 3300.00 3700.00 10561 Strontium 12.00 14.00 11.00 7.00 16.00 13 Sulfur 1300.00 1400.00 1200.00 2000.00 2000.00 884 Thallium <0.50 <0.46 <0.52 <0.50 <0.38 0.0005 Tin 0.72 0.70 0.70 2.40 2.50 0.003 Titanium 0.33 0.40 0.28 <0.05 0.21 0.00001 Vanadium <0.25 <0.23 <0.26 <0.25 <0.19 0.0003 Yttrium <0.02 <0.02 <0.03 <0.02 <0.02 0.0003 Zinc 37.00 99.00 120.00 30.00 24.00 0.014 Brine Shrimp Plankton Marine Snow Coral Vital Golden Pearls Seawater Aluminum 120.00 8.10 0.48 3.00 49.00 1.9 Antimony <0.44 <0.42 <0.06 <0.12 <0.46 0.00001 Arsenic <0.44 <0.42 <0.06 <0.12 3.70 0.024 Barium 0.72 0.63 <0.00 0.01 1.70 0.05 Beryllium <0.02 <0.02 <0.00 <0.01 <0.02 0.0001 Boron <2.20 <2.10 <0.30 42.00 <2.30 4.6 Cadmium <0.02 <0.02 <0.00 0.50 0.90 0.00001 Calcium 140.00 1700.00 12.00 24.00 8700.00 400 Chromium 0.52 0.18 <0.01 0.42 1.00 0.00001 Cobalt 0.11 0.07 0.02 0.14 4.40 0.0001 Copper 1.30 10.00 <0.01 <0.01 22.00 0.09 Iodide 370.00 500.00 12.00 170.00 4300.00 0.05 Iron 140.00 5.6 0.30 550.00 1100.00 0.02 Lead <0.44 <0.42 <0.06 <0.12 1.80 0.005 Lithium 0.24 <0.21 <0.03 <0.06 0.31 0.1 Magnesium 300.00 520.00 10.00 380.00 920.00 1272 Manganese 10.00 0.62 0.02 77.00 49.00 0.01 Mercury <0.44 <0.42 <0.06 <0.01 <0.46 0.0003 Molybdenum <0.22 <0.21 <0.03 13.00 1.20 0.002 Nickel 0.32 <0.21 <0.03 <0.61 <0.23 0.0005 Phosphorus 720.00 1600.00 16.00 580.00 15000.00 0.012 Potassium 1000.00 230.00 660.00 1800.00 5400.00 380 Selenium 0.57 0.50 <0.06 0.29 7.00 0.004 Silicon 270.00 29.00 4.00 102.00 270.00 4 Silver <0.44 <0.42 <0.06 <0.12 <0.46 0.0003 Sodium 3200.00 940.00 180.00 68.00 7100.00 10561 Strontium 2.30 28.00 0.21 0.08 38.00 13 Sulfur 1000.00 840.00 280.00 860.00 6000.00 884 Thallium <0.44 <0.42 <0.06 <0.12 <0.46 0.0005 Tin 0.34 0.38 <0.03 0.12 1.10 0.003 Titanium 2.30 <0.04 <0.01 5.70 0.98 0.00001 Vanadium <0.22 <0.21 <0.03 <0.61 <0.23 0.0003 Yttrium <0.02 <0.02 <0.00 <0.01 <0.02 0.0003 Zinc 6.90 5.80 0.05 260.00 280.00 0.014 Gold Flakes Tahitian Blend Saltwater Staple Combisan Nori Seawater Aluminum 80.00 14.00 95.00 0.12 83.00 1.9 Antimony <0.49 <0.17 <0.49 <0.06 <6.50 0.00001 Arsenic 2.30 <0.17 2.70 <0.06 25.00 0.024 Barium 5.20 0.83 6.90 0.00 5.90 0.05 Beryllium <0.68 <0.10 <0.02 <0.00 <0.03 0.0001 Boron <2.50 <0.86 <2.40 1.60 <33.00 4.6 Cadmium <0.84 <0.02 1.30 <0.00 1.20 0.00001 Calcium 7200.00 440.00 17000.00 1.50 2400.00 400 Chromium 5.60 0.80 <0.05 0.06 1.30 0.00001 Cobalt 0.80 0.40 0.80 0.02 0.93 0.0001 Copper 10.00 6.50 9.50 0.11 3.00 0.09 Iodide 2900.00 530.00 5000.00 14.00 2000.00 0.05 Iron 1700.00 90.00 290.00 23.00 110.00 0.02 Lead 1.00 <0.34 1.70 <0.06 <6.50 0.005 Lithium 0.56 <0.09 0.48 <0.03 <3.30 0.1 Magnesium 1300.00 290.00 1800.00 <0.29 2900.00 1272 Manganese 23.00 18.00 90.00 18.00 110.00 0.01 Mercury <0.49 <0.17 <0.49 <0.06 <6.50 0.0003 Molybdenum 1.80 0.19 0.61 0.24 <3.30 0.002 Nickel 1.80 0.30 0.25 0.15 <3.30 0.0005 Phosphorus 8300.00 1400.00 15000.00 1.80 6400.00 0.012 Potassium 4000.00 840.00 4200.00 7.90 32000.00 380 Selenium 7.00 3.90 5.80 <0.06 10.00 0.004 Silicon 540.00 120.00 440.00 2.00 280.00 4 Silver <0.49 <0.17 <0.49 <0.06 <6.50 0.0003 Sodium 3400.00 1300.00 7400.00 26.00 13000.00 10561 Strontium 39.00 28.00 150.00 0.01 25.00 13 Sulfur 5000.00 780.00 4800.00 27.00 17000.00 884 Thallium 1.90 <0.17 <0.49 <0.06 <6.50 0.0005 Tin 2.50 1.40 1.40 0.60 4.80 0.003 Titanium 2.10 1.10 4.20 <0.01 <0.65 0.00001 Vanadium <0.25 <0.09 <0.24 <0.03 <3.30 0.0003 Yttrium 0.68 <0.01 0.04 <0.00 1.20 0.0003 Zinc 63.00 12.00 190.00 5.80 38.00 0.014