| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 2.119 | 1.039 | 0.333 | 5.994 |
| Arsenic | As (ppm) | 3.555 | 0.968 | 0.955 | 7.904 |
| Calcium | Ca (wt%) | 0.133 | 0.172 | 0.012 | 0.911 |
| Copper | Cu (ppm) | 8.408 | 2.782 | 2.124 | 19.974 |
| Iron | Fe (wt%) | 1.399 | 1.246 | 0.279 | 7.479 |
| Mercury | Hg (ppm) | 0.052 | 0.015 | 0.017 | 0.127 |
| Magnesium | Mg (wt%) | 0.082 | 0.062 | 0.009 | 0.288 |
| Manganese | Mn (ppm) | 288.019 | 374.524 | 59.977 | 2134.020 |
| Sodium | Na (wt%) | 0.116 | 0.180 | 0.005 | 1.141 |
| Phosphorus | P (wt%) | 0.040 | 0.009 | 0.018 | 0.089 |
| Lead | Pb (ppm) | 27.415 | 23.044 | 8.073 | 229.010 |
| Selenium | Se (ppm) | 0.305 | 0.097 | 0.103 | 0.670 |
| Titanium | Ti (wt%) | 0.585 | 0.084 | 0.384 | 1.086 |
| Zinc | Zn (ppm) | 20.715 | 10.117 | 4.137 | 53.169 |