| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.154 | 2.227 | 1.712 | 12.595 |
| Arsenic | As (ppm) | 5.040 | 1.208 | 1.561 | 9.916 |
| Calcium | Ca (wt%) | 1.340 | 0.501 | 0.274 | 3.908 |
| Copper | Cu (ppm) | 50.275 | 14.830 | 13.939 | 105.673 |
| Iron | Fe (wt%) | 5.397 | 1.441 | 1.685 | 9.049 |
| Mercury | Hg (ppm) | 0.046 | 0.017 | 0.011 | 0.133 |
| Magnesium | Mg (wt%) | 1.990 | 1.952 | 0.303 | 15.366 |
| Manganese | Mn (ppm) | 1147.120 | 379.311 | 234.190 | 2859.570 |
| Sodium | Na (wt%) | 1.128 | 0.346 | 0.147 | 1.970 |
| Phosphorus | P (wt%) | 0.070 | 0.017 | 0.014 | 0.136 |
| Lead | Pb (ppm) | 17.555 | 6.033 | 2.708 | 35.862 |
| Selenium | Se (ppm) | 0.191 | 0.113 | 0.100 | 1.110 |
| Titanium | Ti (wt%) | 0.512 | 0.119 | 0.082 | 0.983 |
| Zinc | Zn (ppm) | 98.318 | 20.241 | 36.605 | 172.924 |