| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.515 | 0.312 | 1.432 | 3.358 |
| Arsenic | As (ppm) | 1.250 | 0.275 | 0.398 | 1.927 |
| Calcium | Ca (wt%) | 0.315 | 0.273 | 0.058 | 1.551 |
| Copper | Cu (ppm) | 8.790 | 2.242 | 4.644 | 16.436 |
| Iron | Fe (wt%) | 3.329 | 0.549 | 1.452 | 4.860 |
| Mercury | Hg (ppm) | 0.031 | 0.006 | 0.016 | 0.048 |
| Magnesium | Mg (wt%) | 0.200 | 0.133 | 0.056 | 1.009 |
| Manganese | Mn (ppm) | 549.295 | 113.264 | 348.247 | 999.253 |
| Sodium | Na (wt%) | 0.216 | 0.101 | 0.091 | 0.678 |
| Phosphorus | P (wt%) | 0.008 | 0.003 | 0.003 | 0.020 |
| Lead | Pb (ppm) | 16.855 | 4.327 | 3.522 | 31.252 |
| Selenium | Se (ppm) | 0.140 | 0.042 | 0.100 | 0.247 |
| Titanium | Ti (wt%) | 0.755 | 0.147 | 0.445 | 1.161 |
| Zinc | Zn (ppm) | 44.337 | 7.729 | 18.117 | 74.686 |