| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 8.191 | 1.503 | 1.518 | 12.445 |
| Arsenic | As (ppm) | 4.561 | 3.752 | 0.967 | 34.139 |
| Calcium | Ca (wt%) | 2.591 | 0.954 | 0.257 | 6.215 |
| Copper | Cu (ppm) | 51.014 | 16.690 | 18.162 | 112.900 |
| Iron | Fe (wt%) | 5.206 | 1.408 | 2.049 | 12.503 |
| Mercury | Hg (ppm) | 0.038 | 0.025 | 0.010 | 0.317 |
| Magnesium | Mg (wt%) | 2.795 | 2.357 | 0.360 | 17.127 |
| Manganese | Mn (ppm) | 1190.060 | 373.623 | 219.584 | 3007.020 |
| Sodium | Na (wt%) | 1.521 | 0.474 | 0.097 | 3.136 |
| Phosphorus | P (wt%) | 0.084 | 0.029 | 0.020 | 0.218 |
| Lead | Pb (ppm) | 9.983 | 3.095 | 2.122 | 27.363 |
| Selenium | Se (ppm) | 0.209 | 0.145 | 0.100 | 1.175 |
| Titanium | Ti (wt%) | 0.490 | 0.129 | 0.103 | 1.003 |
| Zinc | Zn (ppm) | 93.532 | 18.048 | 47.309 | 156.737 |