| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.790 | 0.784 | 1.639 | 5.749 |
| Arsenic | As (ppm) | 4.049 | 1.873 | 1.348 | 15.398 |
| Calcium | Ca (wt%) | 2.102 | 1.399 | 0.249 | 9.242 |
| Copper | Cu (ppm) | 51.733 | 146.813 | 3.084 | 1862.210 |
| Iron | Fe (wt%) | 1.835 | 0.535 | 0.636 | 7.536 |
| Mercury | Hg (ppm) | 0.020 | 0.011 | 0.010 | 0.114 |
| Magnesium | Mg (wt%) | 0.490 | 0.178 | 0.127 | 2.591 |
| Manganese | Mn (ppm) | 276.831 | 80.942 | 87.754 | 555.270 |
| Sodium | Na (wt%) | 0.445 | 0.135 | 0.185 | 1.358 |
| Phosphorus | P (wt%) | 0.040 | 0.015 | 0.005 | 0.105 |
| Lead | Pb (ppm) | 20.263 | 9.072 | 9.208 | 129.888 |
| Selenium | Se (ppm) | 0.212 | 0.107 | 0.100 | 0.893 |
| Titanium | Ti (wt%) | 0.219 | 0.036 | 0.103 | 0.361 |
| Zinc | Zn (ppm) | 87.807 | 134.088 | 14.046 | 1080.240 |