| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.962 | 0.417 | 3.900 | 6.343 |
| Arsenic | As (ppm) | 5.742 | 1.242 | 2.472 | 8.700 |
| Calcium | Ca (wt%) | 5.827 | 0.674 | 3.952 | 7.245 |
| Copper | Cu (ppm) | 11.387 | 3.611 | 2.247 | 29.649 |
| Iron | Fe (wt%) | 1.989 | 0.237 | 1.370 | 2.410 |
| Mercury | Hg (ppm) | 0.015 | 0.005 | 0.010 | 0.040 |
| Magnesium | Mg (wt%) | 0.714 | 0.145 | 0.338 | 1.138 |
| Manganese | Mn (ppm) | 563.737 | 186.554 | 301.175 | 1041.080 |
| Sodium | Na (wt%) | 1.188 | 0.163 | 0.786 | 1.511 |
| Phosphorus | P (wt%) | 0.060 | 0.013 | 0.040 | 0.134 |
| Lead | Pb (ppm) | 18.605 | 2.746 | 13.000 | 26.957 |
| Selenium | Se (ppm) | 0.182 | 0.061 | 0.100 | 0.397 |
| Titanium | Ti (wt%) | 0.354 | 0.067 | 0.255 | 0.583 |
| Zinc | Zn (ppm) | 50.452 | 8.089 | 29.000 | 75.546 |