| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.110 | 0.929 | 2.732 | 9.443 |
| Arsenic | As (ppm) | 14.180 | 33.133 | 0.715 | 369.653 |
| Calcium | Ca (wt%) | 2.097 | 1.316 | 0.439 | 10.006 |
| Copper | Cu (ppm) | 29.828 | 28.066 | 1.107 | 318.628 |
| Iron | Fe (wt%) | 2.851 | 0.670 | 1.319 | 5.997 |
| Mercury | Hg (ppm) | 0.047 | 0.024 | 0.010 | 0.177 |
| Magnesium | Mg (wt%) | 1.132 | 0.675 | 0.169 | 6.383 |
| Manganese | Mn (ppm) | 603.702 | 167.129 | 211.624 | 1368.810 |
| Sodium | Na (wt%) | 1.338 | 0.371 | 0.343 | 2.847 |
| Phosphorus | P (wt%) | 0.090 | 0.034 | 0.026 | 0.271 |
| Lead | Pb (ppm) | 69.095 | 122.810 | 6.189 | 800.481 |
| Selenium | Se (ppm) | 0.645 | 1.120 | 0.102 | 9.407 |
| Titanium | Ti (wt%) | 0.352 | 0.086 | 0.136 | 0.629 |
| Zinc | Zn (ppm) | 109.152 | 103.201 | 28.295 | 669.451 |