| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.643 | 0.525 | 2.215 | 5.091 |
| Arsenic | As (ppm) | 5.072 | 1.484 | 1.665 | 11.023 |
| Calcium | Ca (wt%) | 2.280 | 2.545 | 0.214 | 15.492 |
| Copper | Cu (ppm) | 8.972 | 1.828 | 5.203 | 13.874 |
| Iron | Fe (wt%) | 2.103 | 0.480 | 1.120 | 3.583 |
| Mercury | Hg (ppm) | 0.031 | 0.009 | 0.020 | 0.068 |
| Magnesium | Mg (wt%) | 0.255 | 0.044 | 0.132 | 0.374 |
| Manganese | Mn (ppm) | 710.496 | 224.948 | 264.241 | 2042.830 |
| Sodium | Na (wt%) | 0.423 | 0.074 | 0.177 | 0.590 |
| Phosphorus | P (wt%) | 0.048 | 0.016 | 0.026 | 0.121 |
| Lead | Pb (ppm) | 20.890 | 2.239 | 15.314 | 28.107 |
| Selenium | Se (ppm) | 0.434 | 0.118 | 0.112 | 0.953 |
| Titanium | Ti (wt%) | 0.218 | 0.023 | 0.145 | 0.267 |
| Zinc | Zn (ppm) | 56.121 | 8.415 | 27.984 | 82.702 |