| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.634 | 0.761 | 2.902 | 10.220 |
| Arsenic | As (ppm) | 2.673 | 0.803 | 1.291 | 7.291 |
| Calcium | Ca (wt%) | 2.873 | 0.711 | 0.351 | 5.012 |
| Copper | Cu (ppm) | 31.635 | 7.458 | 7.141 | 62.828 |
| Iron | Fe (wt%) | 4.678 | 1.026 | 1.238 | 8.044 |
| Mercury | Hg (ppm) | 0.029 | 0.013 | 0.010 | 0.063 |
| Magnesium | Mg (wt%) | 1.393 | 0.511 | 0.232 | 3.549 |
| Manganese | Mn (ppm) | 874.807 | 133.835 | 170.258 | 1280.720 |
| Sodium | Na (wt%) | 2.473 | 0.254 | 0.362 | 3.134 |
| Phosphorus | P (wt%) | 0.105 | 0.027 | 0.020 | 0.200 |
| Lead | Pb (ppm) | 18.086 | 26.157 | 2.126 | 252.056 |
| Selenium | Se (ppm) | 0.117 | 0.029 | 0.100 | 0.289 |
| Titanium | Ti (wt%) | 0.608 | 0.127 | 0.189 | 1.014 |
| Zinc | Zn (ppm) | 94.880 | 19.358 | 30.948 | 234.228 |