| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.775 | 1.143 | 2.145 | 6.303 |
| Arsenic | As (ppm) | 13.691 | 3.190 | 5.837 | 19.888 |
| Calcium | Ca (wt%) | 0.276 | 0.093 | 0.150 | 0.734 |
| Copper | Cu (ppm) | 21.518 | 9.665 | 6.111 | 58.071 |
| Iron | Fe (wt%) | 4.220 | 1.354 | 2.309 | 6.855 |
| Mercury | Hg (ppm) | 0.087 | 0.006 | 0.075 | 0.100 |
| Magnesium | Mg (wt%) | 0.334 | 0.141 | 0.109 | 0.804 |
| Manganese | Mn (ppm) | 784.644 | 267.116 | 358.152 | 1360.000 |
| Sodium | Na (wt%) | 0.404 | 0.284 | 0.083 | 1.343 |
| Phosphorus | P (wt%) | 0.100 | 0.023 | 0.039 | 0.182 |
| Lead | Pb (ppm) | 59.757 | 19.656 | 26.408 | 101.000 |
| Selenium | Se (ppm) | 0.540 | 0.121 | 0.300 | 0.885 |
| Titanium | Ti (wt%) | 1.381 | 0.703 | 0.481 | 3.074 |
| Zinc | Zn (ppm) | 65.222 | 9.482 | 32.569 | 88.279 |