| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.666 | 0.593 | 4.270 | 6.958 |
| Arsenic | As (ppm) | 6.013 | 1.067 | 3.751 | 7.894 |
| Calcium | Ca (wt%) | 1.229 | 0.322 | 0.535 | 1.952 |
| Copper | Cu (ppm) | 14.147 | 2.013 | 7.972 | 17.945 |
| Iron | Fe (wt%) | 3.898 | 0.458 | 3.033 | 4.691 |
| Mercury | Hg (ppm) | 0.067 | 0.010 | 0.051 | 0.097 |
| Magnesium | Mg (wt%) | 0.901 | 0.102 | 0.652 | 1.089 |
| Manganese | Mn (ppm) | 1110.200 | 240.802 | 715.195 | 1853.600 |
| Sodium | Na (wt%) | 1.015 | 0.048 | 0.937 | 1.151 |
| Phosphorus | P (wt%) | 0.057 | 0.004 | 0.049 | 0.065 |
| Lead | Pb (ppm) | 56.991 | 31.727 | 25.710 | 167.072 |
| Selenium | Se (ppm) | 0.239 | 0.061 | 0.101 | 0.377 |
| Titanium | Ti (wt%) | 0.551 | 0.099 | 0.370 | 0.742 |
| Zinc | Zn (ppm) | 88.579 | 7.066 | 78.881 | 112.168 |