| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.300 | 0.278 | 2.505 | 3.715 |
| Arsenic | As (ppm) | 2.436 | 0.343 | 1.598 | 3.194 |
| Calcium | Ca (wt%) | 1.658 | 0.844 | 0.587 | 4.578 |
| Copper | Cu (ppm) | 3.872 | 1.329 | 1.131 | 9.802 |
| Iron | Fe (wt%) | 1.903 | 0.397 | 1.316 | 3.004 |
| Mercury | Hg (ppm) | 0.021 | 0.006 | 0.010 | 0.042 |
| Magnesium | Mg (wt%) | 0.631 | 0.297 | 0.213 | 1.577 |
| Manganese | Mn (ppm) | 461.235 | 100.412 | 175.760 | 692.956 |
| Sodium | Na (wt%) | 0.923 | 0.088 | 0.672 | 1.078 |
| Phosphorus | P (wt%) | 0.044 | 0.004 | 0.035 | 0.054 |
| Lead | Pb (ppm) | 14.250 | 2.012 | 10.109 | 19.265 |
| Selenium | Se (ppm) | 0.119 | 0.024 | 0.100 | 0.200 |
| Titanium | Ti (wt%) | 0.388 | 0.127 | 0.175 | 0.683 |
| Zinc | Zn (ppm) | 35.691 | 7.121 | 25.245 | 54.403 |