| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.813 | 0.585 | 3.847 | 8.069 |
| Arsenic | As (ppm) | 12.501 | 16.056 | 2.563 | 165.131 |
| Calcium | Ca (wt%) | 0.763 | 0.190 | 0.311 | 1.561 |
| Copper | Cu (ppm) | 11.074 | 5.982 | 2.039 | 34.658 |
| Iron | Fe (wt%) | 3.036 | 1.279 | 0.865 | 10.197 |
| Mercury | Hg (ppm) | 0.050 | 0.047 | 0.011 | 0.671 |
| Magnesium | Mg (wt%) | 0.758 | 0.342 | 0.243 | 2.863 |
| Manganese | Mn (ppm) | 1068.720 | 569.999 | 236.566 | 5145.350 |
| Sodium | Na (wt%) | 1.463 | 0.266 | 0.854 | 2.896 |
| Phosphorus | P (wt%) | 0.061 | 0.023 | 0.015 | 0.208 |
| Lead | Pb (ppm) | 29.698 | 20.489 | 9.305 | 169.835 |
| Selenium | Se (ppm) | 0.215 | 0.118 | 0.100 | 1.574 |
| Titanium | Ti (wt%) | 0.426 | 0.131 | 0.128 | 1.424 |
| Zinc | Zn (ppm) | 78.507 | 29.424 | 21.613 | 205.394 |