| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.254 | 0.453 | 4.112 | 6.405 |
| Arsenic | As (ppm) | 2.962 | 2.478 | 0.325 | 18.272 |
| Calcium | Ca (wt%) | 1.316 | 0.346 | 0.741 | 1.988 |
| Copper | Cu (ppm) | 8.693 | 1.924 | 3.344 | 18.624 |
| Iron | Fe (wt%) | 2.132 | 0.357 | 1.319 | 3.918 |
| Mercury | Hg (ppm) | 0.118 | 0.168 | 0.024 | 1.586 |
| Magnesium | Mg (wt%) | 0.317 | 0.074 | 0.175 | 0.497 |
| Manganese | Mn (ppm) | 1123.540 | 204.640 | 489.591 | 2196.070 |
| Sodium | Na (wt%) | 1.620 | 0.174 | 1.266 | 2.092 |
| Phosphorus | P (wt%) | 0.069 | 0.019 | 0.031 | 0.133 |
| Lead | Pb (ppm) | 35.072 | 4.581 | 25.988 | 64.782 |
| Selenium | Se (ppm) | 0.119 | 0.020 | 0.100 | 0.255 |
| Titanium | Ti (wt%) | 0.695 | 0.229 | 0.327 | 1.459 |
| Zinc | Zn (ppm) | 30.090 | 6.069 | 15.819 | 60.702 |