| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.063 | 0.805 | 4.119 | 10.400 |
| Arsenic | As (ppm) | 8.395 | 6.323 | 3.345 | 50.736 |
| Calcium | Ca (wt%) | 1.145 | 0.688 | 0.192 | 5.172 |
| Copper | Cu (ppm) | 44.681 | 10.159 | 9.809 | 99.000 |
| Iron | Fe (wt%) | 5.116 | 0.933 | 2.113 | 7.931 |
| Mercury | Hg (ppm) | 0.117 | 0.040 | 0.021 | 0.290 |
| Magnesium | Mg (wt%) | 3.913 | 1.698 | 0.593 | 11.571 |
| Manganese | Mn (ppm) | 820.327 | 195.444 | 393.619 | 1485.350 |
| Sodium | Na (wt%) | 1.334 | 0.217 | 0.377 | 1.876 |
| Phosphorus | P (wt%) | 0.067 | 0.013 | 0.035 | 0.129 |
| Lead | Pb (ppm) | 11.728 | 3.821 | 5.369 | 28.000 |
| Selenium | Se (ppm) | 0.312 | 0.142 | 0.110 | 0.781 |
| Titanium | Ti (wt%) | 0.392 | 0.056 | 0.196 | 0.541 |
| Zinc | Zn (ppm) | 91.245 | 13.148 | 46.987 | 144.000 |