| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 3.859 | 0.753 | 2.279 | 6.987 |
| Arsenic | As (ppm) | 3.824 | 1.688 | 1.213 | 11.269 |
| Calcium | Ca (wt%) | 2.871 | 1.044 | 0.488 | 6.736 |
| Copper | Cu (ppm) | 10.382 | 6.997 | 1.473 | 45.000 |
| Iron | Fe (wt%) | 2.544 | 0.525 | 1.254 | 3.913 |
| Mercury | Hg (ppm) | 0.075 | 0.013 | 0.034 | 0.147 |
| Magnesium | Mg (wt%) | 0.976 | 0.194 | 0.475 | 1.523 |
| Manganese | Mn (ppm) | 504.390 | 111.349 | 297.952 | 813.270 |
| Sodium | Na (wt%) | 0.648 | 0.121 | 0.429 | 1.030 |
| Phosphorus | P (wt%) | 0.054 | 0.008 | 0.030 | 0.090 |
| Lead | Pb (ppm) | 24.450 | 9.443 | 11.851 | 62.000 |
| Selenium | Se (ppm) | 0.277 | 0.092 | 0.103 | 0.577 |
| Titanium | Ti (wt%) | 0.383 | 0.076 | 0.224 | 0.600 |
| Zinc | Zn (ppm) | 79.757 | 50.045 | 32.958 | 308.000 |