| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.850 | 0.531 | 2.737 | 5.724 |
| Arsenic | As (ppm) | 2.081 | 1.116 | 0.938 | 5.312 |
| Calcium | Ca (wt%) | 1.085 | 0.510 | 0.575 | 2.598 |
| Copper | Cu (ppm) | 11.691 | 4.078 | 2.355 | 23.846 |
| Iron | Fe (wt%) | 2.890 | 1.046 | 1.393 | 5.934 |
| Mercury | Hg (ppm) | 0.118 | 0.101 | 0.015 | 0.418 |
| Magnesium | Mg (wt%) | 0.373 | 0.211 | 0.143 | 1.148 |
| Manganese | Mn (ppm) | 901.870 | 249.368 | 519.944 | 1682.310 |
| Sodium | Na (wt%) | 0.758 | 0.130 | 0.473 | 1.118 |
| Phosphorus | P (wt%) | 0.023 | 0.011 | 0.009 | 0.071 |
| Lead | Pb (ppm) | 16.264 | 3.780 | 9.881 | 30.430 |
| Selenium | Se (ppm) | 0.150 | 0.031 | 0.100 | 0.214 |
| Titanium | Ti (wt%) | 0.538 | 0.181 | 0.230 | 1.354 |
| Zinc | Zn (ppm) | 34.367 | 7.703 | 23.111 | 58.464 |