| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.069 | 0.715 | 3.595 | 7.685 |
| Arsenic | As (ppm) | 6.589 | 2.664 | 2.248 | 23.407 |
| Calcium | Ca (wt%) | 2.621 | 0.729 | 0.689 | 5.342 |
| Copper | Cu (ppm) | 23.870 | 33.587 | 2.057 | 635.857 |
| Iron | Fe (wt%) | 3.031 | 1.131 | 1.141 | 9.568 |
| Mercury | Hg (ppm) | 0.025 | 0.006 | 0.010 | 0.050 |
| Magnesium | Mg (wt%) | 1.281 | 0.627 | 0.403 | 8.940 |
| Manganese | Mn (ppm) | 457.942 | 216.546 | 90.412 | 1302.170 |
| Sodium | Na (wt%) | 1.373 | 0.374 | 0.632 | 2.908 |
| Phosphorus | P (wt%) | 0.076 | 0.022 | 0.033 | 0.173 |
| Lead | Pb (ppm) | 16.290 | 3.367 | 6.748 | 29.300 |
| Selenium | Se (ppm) | 0.572 | 0.512 | 0.101 | 3.478 |
| Titanium | Ti (wt%) | 0.272 | 0.079 | 0.094 | 0.690 |
| Zinc | Zn (ppm) | 79.125 | 46.984 | 31.705 | 461.114 |