| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 1.708 | 0.882 | 0.042 | 4.118 |
| Arsenic | As (ppm) | 1.651 | 0.703 | 0.327 | 4.090 |
| Calcium | Ca (wt%) | 0.147 | 0.154 | 0.010 | 1.878 |
| Copper | Cu (ppm) | 4.316 | 2.833 | 1.000 | 33.397 |
| Iron | Fe (wt%) | 0.683 | 0.351 | 0.014 | 1.694 |
| Mercury | Hg (ppm) | 0.123 | 0.407 | 0.010 | 5.385 |
| Magnesium | Mg (wt%) | 0.080 | 0.063 | 0.003 | 0.758 |
| Manganese | Mn (ppm) | 209.427 | 120.014 | 8.911 | 727.294 |
| Sodium | Na (wt%) | 0.012 | 0.005 | 0.003 | 0.040 |
| Phosphorus | P (wt%) | 0.063 | 0.048 | 0.003 | 0.423 |
| Lead | Pb (ppm) | 11.112 | 6.278 | 2.252 | 43.544 |
| Selenium | Se (ppm) | 0.211 | 0.061 | 0.103 | 0.474 |
| Titanium | Ti (wt%) | 0.295 | 0.088 | 0.066 | 0.568 |
| Zinc | Zn (ppm) | 16.988 | 9.072 | 1.383 | 75.674 |