| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.981 | 0.189 | 4.040 | 5.503 |
| Arsenic | As (ppm) | 3.236 | 2.072 | 0.549 | 16.511 |
| Calcium | Ca (wt%) | 1.214 | 0.180 | 0.865 | 2.042 |
| Copper | Cu (ppm) | 10.514 | 2.715 | 4.470 | 18.327 |
| Iron | Fe (wt%) | 2.808 | 0.529 | 1.382 | 4.685 |
| Mercury | Hg (ppm) | 0.042 | 0.010 | 0.012 | 0.103 |
| Magnesium | Mg (wt%) | 0.393 | 0.102 | 0.128 | 0.605 |
| Manganese | Mn (ppm) | 1821.400 | 410.479 | 871.246 | 3262.760 |
| Sodium | Na (wt%) | 1.382 | 0.126 | 0.956 | 1.853 |
| Phosphorus | P (wt%) | 0.057 | 0.016 | 0.023 | 0.118 |
| Lead | Pb (ppm) | 40.737 | 12.899 | 21.077 | 129.888 |
| Selenium | Se (ppm) | 0.141 | 0.029 | 0.100 | 0.269 |
| Titanium | Ti (wt%) | 0.790 | 0.208 | 0.377 | 1.335 |
| Zinc | Zn (ppm) | 37.833 | 9.398 | 13.916 | 68.435 |