| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.140 | 0.673 | 1.394 | 6.082 |
| Arsenic | As (ppm) | 15.244 | 59.072 | 0.800 | 648.492 |
| Calcium | Ca (wt%) | 2.146 | 1.131 | 0.189 | 6.975 |
| Copper | Cu (ppm) | 62.157 | 274.547 | 2.085 | 3005.870 |
| Iron | Fe (wt%) | 1.156 | 0.543 | 0.372 | 5.671 |
| Mercury | Hg (ppm) | 0.015 | 0.010 | 0.010 | 0.099 |
| Magnesium | Mg (wt%) | 0.593 | 0.278 | 0.142 | 2.068 |
| Manganese | Mn (ppm) | 238.927 | 80.832 | 74.760 | 742.844 |
| Sodium | Na (wt%) | 0.358 | 0.119 | 0.100 | 0.956 |
| Phosphorus | P (wt%) | 0.027 | 0.009 | 0.010 | 0.060 |
| Lead | Pb (ppm) | 16.895 | 10.975 | 4.117 | 110.639 |
| Selenium | Se (ppm) | 0.155 | 0.130 | 0.100 | 2.082 |
| Titanium | Ti (wt%) | 0.145 | 0.039 | 0.054 | 0.299 |
| Zinc | Zn (ppm) | 42.717 | 107.125 | 6.834 | 1183.040 |