| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.028 | 1.369 | 0.926 | 6.282 |
| Arsenic | As (ppm) | 4.910 | 2.116 | 2.371 | 11.694 |
| Calcium | Ca (wt%) | 1.253 | 0.688 | 0.145 | 2.870 |
| Copper | Cu (ppm) | 9.118 | 4.490 | 1.234 | 19.842 |
| Iron | Fe (wt%) | 2.949 | 1.119 | 0.809 | 5.444 |
| Mercury | Hg (ppm) | 1.541 | 3.564 | 0.047 | 23.369 |
| Magnesium | Mg (wt%) | 0.683 | 0.346 | 0.114 | 1.854 |
| Manganese | Mn (ppm) | 929.992 | 321.885 | 186.777 | 1756.540 |
| Sodium | Na (wt%) | 0.674 | 0.308 | 0.176 | 1.519 |
| Phosphorus | P (wt%) | 0.061 | 0.019 | 0.013 | 0.099 |
| Lead | Pb (ppm) | 25.570 | 10.319 | 3.045 | 50.649 |
| Selenium | Se (ppm) | 0.378 | 0.114 | 0.110 | 0.978 |
| Titanium | Ti (wt%) | 0.441 | 0.181 | 0.190 | 1.004 |
| Zinc | Zn (ppm) | 82.929 | 25.850 | 24.550 | 142.460 |