| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.142 | 0.650 | 2.258 | 5.763 |
| Arsenic | As (ppm) | 9.153 | 1.603 | 5.156 | 16.437 |
| Calcium | Ca (wt%) | 0.215 | 0.071 | 0.076 | 0.464 |
| Copper | Cu (ppm) | 11.585 | 4.907 | 1.402 | 27.227 |
| Iron | Fe (wt%) | 3.131 | 0.462 | 2.133 | 4.452 |
| Mercury | Hg (ppm) | 0.052 | 0.036 | 0.011 | 0.211 |
| Magnesium | Mg (wt%) | 0.272 | 0.057 | 0.132 | 0.494 |
| Manganese | Mn (ppm) | 1054.300 | 345.310 | 324.458 | 2420.720 |
| Sodium | Na (wt%) | 0.296 | 0.057 | 0.151 | 0.499 |
| Phosphorus | P (wt%) | 0.050 | 0.006 | 0.033 | 0.063 |
| Lead | Pb (ppm) | 24.717 | 2.861 | 17.360 | 33.998 |
| Selenium | Se (ppm) | 0.353 | 0.062 | 0.122 | 0.527 |
| Titanium | Ti (wt%) | 0.277 | 0.031 | 0.180 | 0.350 |
| Zinc | Zn (ppm) | 100.996 | 18.546 | 50.086 | 136.986 |