| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 7.123 | 0.504 | 5.728 | 8.798 |
| Arsenic | As (ppm) | 4.123 | 2.551 | 1.009 | 19.834 |
| Calcium | Ca (wt%) | 2.121 | 0.309 | 0.900 | 3.173 |
| Copper | Cu (ppm) | 13.383 | 5.301 | 1.346 | 29.930 |
| Iron | Fe (wt%) | 3.107 | 0.488 | 1.695 | 5.288 |
| Mercury | Hg (ppm) | 0.083 | 0.263 | 0.010 | 2.747 |
| Magnesium | Mg (wt%) | 0.859 | 0.168 | 0.468 | 1.458 |
| Manganese | Mn (ppm) | 640.842 | 84.127 | 331.907 | 948.802 |
| Sodium | Na (wt%) | 1.838 | 0.270 | 0.984 | 2.374 |
| Phosphorus | P (wt%) | 0.111 | 0.030 | 0.040 | 0.227 |
| Lead | Pb (ppm) | 26.665 | 4.559 | 20.012 | 60.583 |
| Selenium | Se (ppm) | 0.263 | 0.238 | 0.100 | 1.823 |
| Titanium | Ti (wt%) | 0.428 | 0.099 | 0.245 | 0.865 |
| Zinc | Zn (ppm) | 81.857 | 19.919 | 37.168 | 302.960 |