| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.033 | 0.926 | 1.303 | 6.232 |
| Arsenic | As (ppm) | 1.339 | 0.658 | 0.337 | 4.783 |
| Calcium | Ca (wt%) | 0.642 | 0.537 | 0.022 | 2.741 |
| Copper | Cu (ppm) | 5.803 | 1.216 | 1.899 | 9.758 |
| Iron | Fe (wt%) | 2.373 | 0.485 | 1.235 | 3.634 |
| Mercury | Hg (ppm) | 0.126 | 0.104 | 0.019 | 0.708 |
| Magnesium | Mg (wt%) | 0.173 | 0.112 | 0.024 | 0.608 |
| Manganese | Mn (ppm) | 611.800 | 179.935 | 256.414 | 1420.900 |
| Sodium | Na (wt%) | 0.415 | 0.256 | 0.026 | 1.223 |
| Phosphorus | P (wt%) | 0.024 | 0.009 | 0.006 | 0.060 |
| Lead | Pb (ppm) | 23.992 | 4.489 | 14.127 | 48.054 |
| Selenium | Se (ppm) | 0.124 | 0.022 | 0.100 | 0.210 |
| Titanium | Ti (wt%) | 0.737 | 0.140 | 0.396 | 1.135 |
| Zinc | Zn (ppm) | 37.726 | 18.013 | 11.214 | 91.286 |