| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.741 | 1.306 | 1.430 | 8.096 |
| Arsenic | As (ppm) | 8.082 | 1.353 | 2.833 | 12.920 |
| Calcium | Ca (wt%) | 0.717 | 0.478 | 0.084 | 2.314 |
| Copper | Cu (ppm) | 15.134 | 5.108 | 4.586 | 29.683 |
| Iron | Fe (wt%) | 2.459 | 0.634 | 0.736 | 3.977 |
| Mercury | Hg (ppm) | 0.022 | 0.004 | 0.010 | 0.031 |
| Magnesium | Mg (wt%) | 0.490 | 0.168 | 0.082 | 0.899 |
| Manganese | Mn (ppm) | 759.078 | 225.355 | 486.017 | 1794.900 |
| Sodium | Na (wt%) | 0.672 | 0.367 | 0.044 | 1.767 |
| Phosphorus | P (wt%) | 0.048 | 0.011 | 0.011 | 0.071 |
| Lead | Pb (ppm) | 16.035 | 1.741 | 11.870 | 20.922 |
| Selenium | Se (ppm) | 0.289 | 0.096 | 0.104 | 0.520 |
| Titanium | Ti (wt%) | 0.269 | 0.082 | 0.089 | 0.488 |
| Zinc | Zn (ppm) | 72.922 | 10.131 | 32.285 | 93.822 |