| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.463 | 1.302 | 1.531 | 7.995 |
| Arsenic | As (ppm) | 13.480 | 22.285 | 1.899 | 422.250 |
| Calcium | Ca (wt%) | 4.210 | 2.291 | 0.633 | 16.976 |
| Copper | Cu (ppm) | 24.071 | 15.380 | 5.287 | 176.700 |
| Iron | Fe (wt%) | 3.992 | 1.980 | 0.383 | 12.884 |
| Mercury | Hg (ppm) | 0.305 | 2.926 | 0.010 | 72.624 |
| Magnesium | Mg (wt%) | 1.411 | 0.579 | 0.397 | 6.059 |
| Manganese | Mn (ppm) | 689.764 | 281.768 | 56.191 | 2038.090 |
| Sodium | Na (wt%) | 1.087 | 0.529 | 0.087 | 2.490 |
| Phosphorus | P (wt%) | 0.116 | 0.054 | 0.017 | 0.415 |
| Lead | Pb (ppm) | 48.809 | 148.242 | 6.523 | 2070.090 |
| Selenium | Se (ppm) | 0.265 | 0.659 | 0.100 | 12.362 |
| Titanium | Ti (wt%) | 0.498 | 0.255 | 0.050 | 1.375 |
| Zinc | Zn (ppm) | 87.030 | 53.667 | 11.227 | 616.558 |