| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 6.374 | 0.726 | 4.176 | 8.016 |
| Arsenic | As (ppm) | 7.876 | 2.419 | 1.665 | 21.038 |
| Calcium | Ca (wt%) | 1.301 | 0.485 | 0.556 | 2.851 |
| Copper | Cu (ppm) | 15.566 | 5.769 | 1.248 | 27.126 |
| Iron | Fe (wt%) | 2.999 | 0.513 | 2.030 | 5.118 |
| Mercury | Hg (ppm) | 0.053 | 0.018 | 0.011 | 0.115 |
| Magnesium | Mg (wt%) | 0.744 | 0.149 | 0.407 | 1.374 |
| Manganese | Mn (ppm) | 625.104 | 146.770 | 345.690 | 1209.050 |
| Sodium | Na (wt%) | 1.132 | 0.325 | 0.606 | 1.977 |
| Phosphorus | P (wt%) | 0.083 | 0.024 | 0.026 | 0.185 |
| Lead | Pb (ppm) | 30.740 | 7.925 | 16.212 | 61.115 |
| Selenium | Se (ppm) | 0.208 | 0.087 | 0.101 | 0.738 |
| Titanium | Ti (wt%) | 0.466 | 0.162 | 0.267 | 1.141 |
| Zinc | Zn (ppm) | 84.668 | 26.206 | 34.947 | 216.114 |