| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.024 | 0.441 | 0.803 | 3.704 |
| Arsenic | As (ppm) | 2.948 | 0.961 | 1.620 | 9.064 |
| Calcium | Ca (wt%) | 0.158 | 0.099 | 0.045 | 0.556 |
| Copper | Cu (ppm) | 7.607 | 1.807 | 3.220 | 12.350 |
| Iron | Fe (wt%) | 0.984 | 0.162 | 0.468 | 1.528 |
| Mercury | Hg (ppm) | 0.049 | 0.012 | 0.023 | 0.086 |
| Magnesium | Mg (wt%) | 0.099 | 0.041 | 0.036 | 0.349 |
| Manganese | Mn (ppm) | 404.722 | 87.389 | 193.821 | 647.071 |
| Sodium | Na (wt%) | 0.262 | 0.073 | 0.092 | 0.522 |
| Phosphorus | P (wt%) | 0.024 | 0.005 | 0.010 | 0.047 |
| Lead | Pb (ppm) | 15.725 | 4.378 | 6.474 | 26.509 |
| Selenium | Se (ppm) | 0.168 | 0.046 | 0.101 | 0.311 |
| Titanium | Ti (wt%) | 0.302 | 0.034 | 0.169 | 0.391 |
| Zinc | Zn (ppm) | 39.942 | 14.361 | 14.867 | 74.463 |