| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.050 | 1.256 | 1.121 | 6.078 |
| Arsenic | As (ppm) | 7.431 | 3.074 | 1.413 | 14.191 |
| Calcium | Ca (wt%) | 0.738 | 0.398 | 0.241 | 1.624 |
| Copper | Cu (ppm) | 53.681 | 26.964 | 13.490 | 100.709 |
| Iron | Fe (wt%) | 2.496 | 1.012 | 0.851 | 4.687 |
| Mercury | Hg (ppm) | 0.176 | 0.098 | 0.044 | 0.393 |
| Magnesium | Mg (wt%) | 0.442 | 0.189 | 0.126 | 0.836 |
| Manganese | Mn (ppm) | 837.111 | 354.314 | 407.539 | 1627.270 |
| Sodium | Na (wt%) | 0.630 | 0.204 | 0.189 | 0.978 |
| Phosphorus | P (wt%) | 0.084 | 0.031 | 0.022 | 0.133 |
| Lead | Pb (ppm) | 198.002 | 188.247 | 18.163 | 627.573 |
| Selenium | Se (ppm) | 0.758 | 0.355 | 0.124 | 1.474 |
| Titanium | Ti (wt%) | 0.388 | 0.136 | 0.108 | 0.658 |
| Zinc | Zn (ppm) | 170.410 | 111.054 | 33.167 | 416.222 |