| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.750 | 1.439 | 1.917 | 7.750 |
| Arsenic | As (ppm) | 1.859 | 0.685 | 0.821 | 5.025 |
| Calcium | Ca (wt%) | 0.359 | 0.205 | 0.097 | 1.198 |
| Copper | Cu (ppm) | 9.020 | 2.209 | 4.445 | 18.288 |
| Iron | Fe (wt%) | 2.557 | 0.800 | 1.011 | 5.552 |
| Mercury | Hg (ppm) | 0.208 | 0.181 | 0.030 | 1.198 |
| Magnesium | Mg (wt%) | 0.231 | 0.041 | 0.130 | 0.381 |
| Manganese | Mn (ppm) | 655.031 | 281.370 | 183.565 | 1689.520 |
| Sodium | Na (wt%) | 0.259 | 0.152 | 0.090 | 0.965 |
| Phosphorus | P (wt%) | 0.034 | 0.007 | 0.020 | 0.058 |
| Lead | Pb (ppm) | 32.089 | 7.970 | 16.543 | 55.740 |
| Selenium | Se (ppm) | 0.166 | 0.046 | 0.100 | 0.363 |
| Titanium | Ti (wt%) | 0.675 | 0.143 | 0.313 | 1.170 |
| Zinc | Zn (ppm) | 46.581 | 14.840 | 25.493 | 117.441 |