| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.657 | 0.687 | 3.190 | 6.291 |
| Arsenic | As (ppm) | 4.969 | 1.164 | 1.032 | 8.691 |
| Calcium | Ca (wt%) | 3.919 | 2.135 | 1.081 | 11.452 |
| Copper | Cu (ppm) | 11.753 | 2.113 | 7.306 | 18.745 |
| Iron | Fe (wt%) | 3.355 | 1.192 | 1.657 | 6.118 |
| Mercury | Hg (ppm) | 0.014 | 0.007 | 0.010 | 0.039 |
| Magnesium | Mg (wt%) | 0.591 | 0.291 | 0.230 | 1.834 |
| Manganese | Mn (ppm) | 556.113 | 206.628 | 243.067 | 1184.660 |
| Sodium | Na (wt%) | 1.022 | 0.249 | 0.408 | 1.594 |
| Phosphorus | P (wt%) | 0.033 | 0.010 | 0.020 | 0.059 |
| Lead | Pb (ppm) | 22.765 | 4.887 | 14.735 | 35.721 |
| Selenium | Se (ppm) | 0.143 | 0.045 | 0.100 | 0.420 |
| Titanium | Ti (wt%) | 0.425 | 0.126 | 0.224 | 0.731 |
| Zinc | Zn (ppm) | 77.493 | 23.845 | 34.113 | 134.000 |