| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 5.415 | 0.384 | 4.345 | 6.821 |
| Arsenic | As (ppm) | 3.018 | 2.014 | 1.004 | 14.125 |
| Calcium | Ca (wt%) | 1.641 | 0.332 | 0.557 | 2.450 |
| Copper | Cu (ppm) | 12.952 | 3.630 | 5.026 | 22.501 |
| Iron | Fe (wt%) | 2.920 | 0.641 | 1.604 | 4.869 |
| Mercury | Hg (ppm) | 0.042 | 0.008 | 0.024 | 0.087 |
| Magnesium | Mg (wt%) | 0.544 | 0.159 | 0.300 | 1.015 |
| Manganese | Mn (ppm) | 1254.520 | 383.731 | 719.023 | 2793.900 |
| Sodium | Na (wt%) | 1.593 | 0.209 | 0.790 | 2.312 |
| Phosphorus | P (wt%) | 0.080 | 0.018 | 0.028 | 0.171 |
| Lead | Pb (ppm) | 36.423 | 4.727 | 24.266 | 57.042 |
| Selenium | Se (ppm) | 0.173 | 0.089 | 0.100 | 0.769 |
| Titanium | Ti (wt%) | 0.706 | 0.145 | 0.450 | 1.304 |
| Zinc | Zn (ppm) | 44.920 | 15.563 | 22.088 | 123.123 |