| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.510 | 1.500 | 0.631 | 8.671 |
| Arsenic | As (ppm) | 4.813 | 1.825 | 1.395 | 10.961 |
| Calcium | Ca (wt%) | 0.038 | 0.020 | 0.006 | 0.117 |
| Copper | Cu (ppm) | 8.211 | 4.447 | 1.960 | 23.570 |
| Iron | Fe (wt%) | 1.641 | 0.575 | 0.403 | 3.735 |
| Mercury | Hg (ppm) | 0.023 | 0.011 | 0.011 | 0.063 |
| Magnesium | Mg (wt%) | 0.040 | 0.016 | 0.017 | 0.107 |
| Manganese | Mn (ppm) | 278.339 | 108.127 | 78.711 | 668.496 |
| Sodium | Na (wt%) | 0.012 | 0.005 | 0.004 | 0.029 |
| Phosphorus | P (wt%) | 0.030 | 0.013 | 0.010 | 0.099 |
| Lead | Pb (ppm) | 19.806 | 6.035 | 6.092 | 48.109 |
| Selenium | Se (ppm) | 0.285 | 0.126 | 0.121 | 0.807 |
| Titanium | Ti (wt%) | 0.390 | 0.098 | 0.144 | 0.747 |
| Zinc | Zn (ppm) | 23.813 | 6.833 | 7.915 | 46.402 |