| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.454 | 0.389 | 7.132 | 10.355 |
| Arsenic | As (ppm) | 2.987 | 1.091 | 1.189 | 8.081 |
| Calcium | Ca (wt%) | 3.487 | 0.529 | 1.859 | 5.481 |
| Copper | Cu (ppm) | 46.294 | 23.412 | 19.210 | 138.340 |
| Iron | Fe (wt%) | 6.513 | 1.363 | 3.462 | 15.429 |
| Mercury | Hg (ppm) | 0.024 | 0.010 | 0.010 | 0.074 |
| Magnesium | Mg (wt%) | 1.609 | 0.358 | 0.810 | 2.806 |
| Manganese | Mn (ppm) | 1081.770 | 176.559 | 625.527 | 1932.130 |
| Sodium | Na (wt%) | 2.176 | 0.275 | 1.375 | 3.346 |
| Phosphorus | P (wt%) | 0.071 | 0.017 | 0.030 | 0.138 |
| Lead | Pb (ppm) | 15.915 | 21.003 | 5.117 | 253.079 |
| Selenium | Se (ppm) | 0.192 | 0.194 | 0.100 | 1.543 |
| Titanium | Ti (wt%) | 0.751 | 0.126 | 0.431 | 1.250 |
| Zinc | Zn (ppm) | 110.613 | 20.650 | 71.945 | 234.712 |