| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.737 | 0.480 | 2.551 | 4.865 |
| Arsenic | As (ppm) | 9.334 | 1.620 | 4.784 | 14.100 |
| Calcium | Ca (wt%) | 0.225 | 0.272 | 0.061 | 1.619 |
| Copper | Cu (ppm) | 18.256 | 4.806 | 8.558 | 35.913 |
| Iron | Fe (wt%) | 2.172 | 0.276 | 1.279 | 2.830 |
| Mercury | Hg (ppm) | 0.074 | 0.015 | 0.050 | 0.194 |
| Magnesium | Mg (wt%) | 0.269 | 0.099 | 0.170 | 0.754 |
| Manganese | Mn (ppm) | 2094.480 | 1618.770 | 443.199 | 7435.220 |
| Sodium | Na (wt%) | 0.148 | 0.036 | 0.097 | 0.294 |
| Phosphorus | P (wt%) | 0.038 | 0.009 | 0.025 | 0.078 |
| Lead | Pb (ppm) | 57.880 | 16.289 | 34.894 | 105.416 |
| Selenium | Se (ppm) | 0.803 | 0.334 | 0.202 | 3.090 |
| Titanium | Ti (wt%) | 0.322 | 0.029 | 0.263 | 0.432 |
| Zinc | Zn (ppm) | 184.218 | 42.278 | 116.046 | 374.291 |