| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.436 | 1.276 | 0.608 | 6.344 |
| Arsenic | As (ppm) | 3.990 | 1.792 | 1.818 | 12.151 |
| Calcium | Ca (wt%) | 0.575 | 0.802 | 0.021 | 6.575 |
| Copper | Cu (ppm) | 7.644 | 2.488 | 3.229 | 15.082 |
| Iron | Fe (wt%) | 1.997 | 0.600 | 0.939 | 5.153 |
| Mercury | Hg (ppm) | 0.143 | 0.522 | 0.011 | 5.733 |
| Magnesium | Mg (wt%) | 0.113 | 0.074 | 0.028 | 0.359 |
| Manganese | Mn (ppm) | 495.827 | 194.986 | 197.261 | 1557.760 |
| Sodium | Na (wt%) | 0.047 | 0.026 | 0.012 | 0.130 |
| Phosphorus | P (wt%) | 0.023 | 0.013 | 0.003 | 0.057 |
| Lead | Pb (ppm) | 21.105 | 5.005 | 8.372 | 47.559 |
| Selenium | Se (ppm) | 0.292 | 0.128 | 0.107 | 0.766 |
| Titanium | Ti (wt%) | 0.607 | 0.088 | 0.380 | 0.876 |
| Zinc | Zn (ppm) | 36.299 | 11.706 | 17.087 | 68.675 |