| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.233 | 0.380 | 4.306 | 6.383 |
| Arsenic | As (ppm) | 1.547 | 0.449 | 0.706 | 3.094 |
| Calcium | Ca (wt%) | 1.834 | 0.314 | 1.087 | 2.799 |
| Copper | Cu (ppm) | 12.017 | 1.970 | 7.952 | 20.025 |
| Iron | Fe (wt%) | 3.168 | 0.486 | 1.970 | 5.230 |
| Mercury | Hg (ppm) | 0.056 | 0.023 | 0.012 | 0.198 |
| Magnesium | Mg (wt%) | 0.606 | 0.150 | 0.311 | 1.267 |
| Manganese | Mn (ppm) | 1179.270 | 273.230 | 674.492 | 2455.850 |
| Sodium | Na (wt%) | 1.482 | 0.196 | 1.132 | 2.163 |
| Phosphorus | P (wt%) | 0.061 | 0.020 | 0.025 | 0.140 |
| Lead | Pb (ppm) | 42.134 | 14.986 | 18.819 | 118.210 |
| Selenium | Se (ppm) | 0.157 | 0.032 | 0.104 | 0.279 |
| Titanium | Ti (wt%) | 0.760 | 0.159 | 0.450 | 1.385 |
| Zinc | Zn (ppm) | 46.226 | 5.667 | 30.049 | 64.845 |