| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.439 | 0.524 | 2.332 | 4.727 |
| Arsenic | As (ppm) | 5.427 | 3.168 | 1.653 | 16.380 |
| Calcium | Ca (wt%) | 0.774 | 0.720 | 0.210 | 3.967 |
| Copper | Cu (ppm) | 7.575 | 1.480 | 4.083 | 11.991 |
| Iron | Fe (wt%) | 1.815 | 0.657 | 0.774 | 3.903 |
| Mercury | Hg (ppm) | 0.018 | 0.007 | 0.010 | 0.042 |
| Magnesium | Mg (wt%) | 0.258 | 0.084 | 0.071 | 0.499 |
| Manganese | Mn (ppm) | 556.484 | 256.974 | 187.330 | 1212.000 |
| Sodium | Na (wt%) | 0.575 | 0.079 | 0.420 | 0.868 |
| Phosphorus | P (wt%) | 0.035 | 0.013 | 0.010 | 0.075 |
| Lead | Pb (ppm) | 20.755 | 6.503 | 10.652 | 44.504 |
| Selenium | Se (ppm) | 0.263 | 0.111 | 0.101 | 0.521 |
| Titanium | Ti (wt%) | 0.223 | 0.031 | 0.168 | 0.385 |
| Zinc | Zn (ppm) | 43.152 | 14.979 | 12.350 | 80.145 |