| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.708 | 0.639 | 0.701 | 4.864 |
| Arsenic | As (ppm) | 4.473 | 1.107 | 2.436 | 8.405 |
| Calcium | Ca (wt%) | 0.374 | 0.076 | 0.048 | 0.487 |
| Copper | Cu (ppm) | 7.681 | 1.120 | 3.647 | 12.161 |
| Iron | Fe (wt%) | 1.204 | 0.210 | 0.566 | 1.826 |
| Mercury | Hg (ppm) | 0.028 | 0.006 | 0.010 | 0.041 |
| Magnesium | Mg (wt%) | 0.171 | 0.043 | 0.040 | 0.299 |
| Manganese | Mn (ppm) | 641.299 | 197.631 | 140.424 | 1313.500 |
| Sodium | Na (wt%) | 0.736 | 0.199 | 0.029 | 0.931 |
| Phosphorus | P (wt%) | 0.034 | 0.006 | 0.012 | 0.056 |
| Lead | Pb (ppm) | 14.833 | 2.432 | 4.822 | 20.877 |
| Selenium | Se (ppm) | 0.235 | 0.103 | 0.102 | 0.658 |
| Titanium | Ti (wt%) | 0.257 | 0.042 | 0.056 | 0.335 |
| Zinc | Zn (ppm) | 34.414 | 5.827 | 14.585 | 56.781 |