| Element | Symbol | Mean | Std. dev. | Minimum | Maximum |
|---|---|---|---|---|---|
| Aluminum | Al (wt%) | 4.098 | 0.463 | 3.121 | 5.236 |
| Arsenic | As (ppm) | 5.654 | 2.205 | 2.055 | 15.370 |
| Calcium | Ca (wt%) | 1.203 | 0.193 | 0.718 | 2.132 |
| Copper | Cu (ppm) | 12.878 | 2.852 | 6.800 | 25.564 |
| Iron | Fe (wt%) | 4.036 | 0.793 | 2.132 | 7.056 |
| Mercury | Hg (ppm) | 0.027 | 0.021 | 0.011 | 0.205 |
| Magnesium | Mg (wt%) | 0.489 | 0.046 | 0.356 | 0.619 |
| Manganese | Mn (ppm) | 1004.990 | 215.118 | 572.076 | 1853.260 |
| Sodium | Na (wt%) | 1.359 | 0.127 | 1.106 | 1.739 |
| Phosphorus | P (wt%) | 0.107 | 0.030 | 0.056 | 0.190 |
| Lead | Pb (ppm) | 24.004 | 2.832 | 15.378 | 33.040 |
| Selenium | Se (ppm) | 0.119 | 0.030 | 0.100 | 0.260 |
| Titanium | Ti (wt%) | 0.980 | 0.208 | 0.501 | 1.542 |
| Zinc | Zn (ppm) | 42.963 | 7.184 | 31.449 | 68.150 |