| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.471 | 0.359 | 4.377 | 6.568 |
| Arsenic | As (ppm) | 2.745 | 1.005 | 0.647 | 7.995 |
| Calcium | Ca (wt%) | 1.872 | 0.481 | 1.031 | 4.430 |
| Copper | Cu (ppm) | 13.976 | 3.648 | 7.934 | 33.914 |
| Iron | Fe (wt%) | 3.294 | 0.690 | 2.154 | 5.214 |
| Mercury | Hg (ppm) | 0.104 | 0.044 | 0.031 | 0.319 |
| Magnesium | Mg (wt%) | 0.724 | 0.185 | 0.296 | 1.609 |
| Manganese | Mn (ppm) | 1162.000 | 397.972 | 591.957 | 2948.490 |
| Sodium | Na (wt%) | 1.473 | 0.266 | 0.881 | 2.154 |
| Phosphorus | P (wt%) | 0.074 | 0.012 | 0.047 | 0.126 |
| Lead | Pb (ppm) | 46.471 | 14.552 | 27.256 | 148.177 |
| Selenium | Se (ppm) | 0.476 | 0.223 | 0.140 | 1.682 |
| Titanium | Ti (wt%) | 0.585 | 0.150 | 0.304 | 1.106 |
| Zinc | Zn (ppm) | 68.097 | 16.189 | 33.318 | 124.291 |