| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.920 | 0.595 | 1.098 | 3.686 |
| Arsenic | As (ppm) | 3.448 | 0.662 | 1.753 | 5.364 |
| Calcium | Ca (wt%) | 0.150 | 0.106 | 0.046 | 0.420 |
| Copper | Cu (ppm) | 5.020 | 0.865 | 3.732 | 8.432 |
| Iron | Fe (wt%) | 0.814 | 0.202 | 0.473 | 1.417 |
| Mercury | Hg (ppm) | 0.022 | 0.006 | 0.011 | 0.042 |
| Magnesium | Mg (wt%) | 0.096 | 0.047 | 0.038 | 0.274 |
| Manganese | Mn (ppm) | 245.424 | 63.083 | 128.041 | 443.222 |
| Sodium | Na (wt%) | 0.300 | 0.159 | 0.110 | 0.711 |
| Phosphorus | P (wt%) | 0.014 | 0.005 | 0.007 | 0.034 |
| Lead | Pb (ppm) | 18.945 | 14.439 | 7.093 | 66.912 |
| Selenium | Se (ppm) | 0.163 | 0.037 | 0.102 | 0.288 |
| Titanium | Ti (wt%) | 0.301 | 0.029 | 0.258 | 0.398 |
| Zinc | Zn (ppm) | 21.905 | 12.603 | 12.242 | 114.031 |