| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.139 | 0.336 | 6.128 | 8.020 |
| Arsenic | As (ppm) | 7.633 | 1.499 | 4.143 | 11.288 |
| Calcium | Ca (wt%) | 1.117 | 0.200 | 0.667 | 1.776 |
| Copper | Cu (ppm) | 29.966 | 19.760 | 11.005 | 100.387 |
| Iron | Fe (wt%) | 4.452 | 1.232 | 2.319 | 7.754 |
| Mercury | Hg (ppm) | 0.032 | 0.006 | 0.016 | 0.050 |
| Magnesium | Mg (wt%) | 0.720 | 0.133 | 0.466 | 1.129 |
| Manganese | Mn (ppm) | 1267.160 | 591.693 | 398.410 | 3223.530 |
| Sodium | Na (wt%) | 1.256 | 0.180 | 0.809 | 1.726 |
| Phosphorus | P (wt%) | 0.076 | 0.020 | 0.043 | 0.130 |
| Lead | Pb (ppm) | 15.863 | 1.292 | 13.005 | 20.871 |
| Selenium | Se (ppm) | 0.177 | 0.039 | 0.101 | 0.300 |
| Titanium | Ti (wt%) | 0.865 | 0.303 | 0.412 | 2.120 |
| Zinc | Zn (ppm) | 89.614 | 20.185 | 60.523 | 152.434 |