| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.799 | 0.785 | 1.681 | 5.535 |
| Arsenic | As (ppm) | 5.634 | 3.049 | 1.632 | 23.440 |
| Calcium | Ca (wt%) | 2.429 | 2.232 | 0.105 | 12.084 |
| Copper | Cu (ppm) | 18.838 | 4.748 | 9.171 | 33.042 |
| Iron | Fe (wt%) | 2.480 | 0.504 | 1.326 | 4.119 |
| Mercury | Hg (ppm) | 0.207 | 0.147 | 0.070 | 1.266 |
| Magnesium | Mg (wt%) | 0.509 | 0.209 | 0.170 | 1.068 |
| Manganese | Mn (ppm) | 537.834 | 179.978 | 284.159 | 1183.700 |
| Sodium | Na (wt%) | 0.236 | 0.141 | 0.040 | 0.610 |
| Phosphorus | P (wt%) | 0.045 | 0.012 | 0.018 | 0.090 |
| Lead | Pb (ppm) | 28.158 | 9.150 | 14.217 | 85.939 |
| Selenium | Se (ppm) | 0.323 | 0.102 | 0.103 | 0.890 |
| Titanium | Ti (wt%) | 0.432 | 0.133 | 0.202 | 0.777 |
| Zinc | Zn (ppm) | 90.948 | 25.956 | 43.738 | 153.086 |