| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.788 | 1.080 | 2.627 | 7.209 |
| Arsenic | As (ppm) | 5.983 | 1.985 | 2.390 | 11.725 |
| Calcium | Ca (wt%) | 2.601 | 1.741 | 0.161 | 7.956 |
| Copper | Cu (ppm) | 13.363 | 5.753 | 1.000 | 26.193 |
| Iron | Fe (wt%) | 2.876 | 0.534 | 1.874 | 3.988 |
| Mercury | Hg (ppm) | 0.098 | 0.045 | 0.050 | 0.614 |
| Magnesium | Mg (wt%) | 1.096 | 0.360 | 0.462 | 1.876 |
| Manganese | Mn (ppm) | 634.625 | 174.788 | 377.921 | 1261.190 |
| Sodium | Na (wt%) | 0.478 | 0.056 | 0.416 | 0.695 |
| Phosphorus | P (wt%) | 0.063 | 0.015 | 0.040 | 0.100 |
| Lead | Pb (ppm) | 25.052 | 4.992 | 14.319 | 44.500 |
| Selenium | Se (ppm) | 0.402 | 0.136 | 0.151 | 0.761 |
| Titanium | Ti (wt%) | 0.290 | 0.050 | 0.216 | 0.491 |
| Zinc | Zn (ppm) | 82.688 | 27.778 | 36.944 | 197.492 |