| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.319 | 0.255 | 4.465 | 6.083 |
| Arsenic | As (ppm) | 14.445 | 12.526 | 2.900 | 86.901 |
| Calcium | Ca (wt%) | 1.055 | 0.155 | 0.723 | 1.720 |
| Copper | Cu (ppm) | 13.063 | 3.402 | 4.000 | 31.033 |
| Iron | Fe (wt%) | 2.780 | 0.554 | 1.540 | 5.702 |
| Mercury | Hg (ppm) | 0.035 | 0.012 | 0.010 | 0.071 |
| Magnesium | Mg (wt%) | 0.685 | 0.098 | 0.362 | 1.065 |
| Manganese | Mn (ppm) | 1540.460 | 880.376 | 440.833 | 5810.140 |
| Sodium | Na (wt%) | 1.297 | 0.089 | 1.146 | 1.630 |
| Phosphorus | P (wt%) | 0.057 | 0.013 | 0.031 | 0.115 |
| Lead | Pb (ppm) | 39.826 | 9.532 | 21.133 | 85.107 |
| Selenium | Se (ppm) | 0.375 | 0.239 | 0.100 | 1.692 |
| Titanium | Ti (wt%) | 0.474 | 0.030 | 0.374 | 0.538 |
| Zinc | Zn (ppm) | 51.789 | 8.008 | 25.000 | 74.766 |