| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.320 | 0.874 | 0.989 | 6.219 |
| Arsenic | As (ppm) | 5.595 | 1.991 | 1.706 | 12.018 |
| Calcium | Ca (wt%) | 2.456 | 2.454 | 0.031 | 10.259 |
| Copper | Cu (ppm) | 6.620 | 2.492 | 1.239 | 14.475 |
| Iron | Fe (wt%) | 1.659 | 0.444 | 0.555 | 3.098 |
| Mercury | Hg (ppm) | 0.022 | 0.007 | 0.010 | 0.053 |
| Magnesium | Mg (wt%) | 0.318 | 0.183 | 0.032 | 0.962 |
| Manganese | Mn (ppm) | 418.114 | 196.761 | 100.993 | 1315.950 |
| Sodium | Na (wt%) | 0.230 | 0.077 | 0.035 | 0.562 |
| Phosphorus | P (wt%) | 0.028 | 0.010 | 0.006 | 0.063 |
| Lead | Pb (ppm) | 18.447 | 4.730 | 6.599 | 39.414 |
| Selenium | Se (ppm) | 0.364 | 0.102 | 0.142 | 0.706 |
| Titanium | Ti (wt%) | 0.286 | 0.062 | 0.214 | 0.510 |
| Zinc | Zn (ppm) | 39.471 | 10.974 | 15.326 | 77.660 |