| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.811 | 0.545 | 5.129 | 10.751 |
| Arsenic | As (ppm) | 3.612 | 1.981 | 0.827 | 15.479 |
| Calcium | Ca (wt%) | 3.075 | 1.074 | 0.778 | 5.783 |
| Copper | Cu (ppm) | 39.788 | 26.347 | 17.716 | 220.194 |
| Iron | Fe (wt%) | 6.485 | 1.646 | 3.086 | 12.640 |
| Mercury | Hg (ppm) | 0.035 | 0.014 | 0.010 | 0.081 |
| Magnesium | Mg (wt%) | 1.385 | 0.596 | 0.538 | 3.275 |
| Manganese | Mn (ppm) | 1182.710 | 250.232 | 693.008 | 2383.040 |
| Sodium | Na (wt%) | 1.865 | 0.255 | 1.131 | 2.569 |
| Phosphorus | P (wt%) | 0.116 | 0.026 | 0.027 | 0.231 |
| Lead | Pb (ppm) | 12.136 | 3.138 | 3.348 | 39.138 |
| Selenium | Se (ppm) | 0.153 | 0.073 | 0.100 | 0.733 |
| Titanium | Ti (wt%) | 0.847 | 0.222 | 0.399 | 1.524 |
| Zinc | Zn (ppm) | 120.594 | 17.627 | 72.125 | 179.980 |