| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.732 | 0.390 | 2.615 | 4.753 |
| Arsenic | As (ppm) | 10.191 | 1.430 | 5.081 | 14.642 |
| Calcium | Ca (wt%) | 11.861 | 4.720 | 3.590 | 19.910 |
| Copper | Cu (ppm) | 15.063 | 3.752 | 8.752 | 23.936 |
| Iron | Fe (wt%) | 2.079 | 0.170 | 1.654 | 2.734 |
| Mercury | Hg (ppm) | 0.014 | 0.003 | 0.010 | 0.022 |
| Magnesium | Mg (wt%) | 0.413 | 0.047 | 0.314 | 0.650 |
| Manganese | Mn (ppm) | 1231.280 | 539.101 | 370.217 | 4225.840 |
| Sodium | Na (wt%) | 0.216 | 0.078 | 0.089 | 0.387 |
| Phosphorus | P (wt%) | 0.058 | 0.011 | 0.035 | 0.103 |
| Lead | Pb (ppm) | 30.573 | 8.490 | 17.726 | 69.693 |
| Selenium | Se (ppm) | 0.474 | 0.131 | 0.302 | 0.995 |
| Titanium | Ti (wt%) | 0.241 | 0.032 | 0.176 | 0.363 |
| Zinc | Zn (ppm) | 55.775 | 7.301 | 40.369 | 71.875 |