| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.344 | 0.434 | 0.961 | 4.521 |
| Arsenic | As (ppm) | 6.061 | 1.519 | 3.226 | 12.487 |
| Calcium | Ca (wt%) | 0.120 | 0.058 | 0.031 | 0.433 |
| Copper | Cu (ppm) | 7.433 | 1.760 | 3.492 | 22.165 |
| Iron | Fe (wt%) | 1.444 | 0.275 | 0.594 | 2.390 |
| Mercury | Hg (ppm) | 0.030 | 0.019 | 0.011 | 0.113 |
| Magnesium | Mg (wt%) | 0.140 | 0.036 | 0.064 | 0.291 |
| Manganese | Mn (ppm) | 453.845 | 208.862 | 123.575 | 2196.730 |
| Sodium | Na (wt%) | 0.061 | 0.025 | 0.020 | 0.169 |
| Phosphorus | P (wt%) | 0.019 | 0.005 | 0.009 | 0.049 |
| Lead | Pb (ppm) | 14.797 | 4.217 | 5.240 | 46.010 |
| Selenium | Se (ppm) | 0.294 | 0.060 | 0.116 | 0.441 |
| Titanium | Ti (wt%) | 0.249 | 0.035 | 0.123 | 0.395 |
| Zinc | Zn (ppm) | 42.012 | 25.762 | 18.410 | 360.113 |