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| Mineral | Formula | Specific Gravity |
| Biotite | complex | 2.8 - 3.2 |
| Calcite | CaCO3 | 2.71 |
| Dolomite | CaMg(CO3) 2 | 2.85 |
| Gypsum | CaSO4.2H2O | 2.3 |
| Quartz | SiO2 | 2.65 |
| K Feldspar | KAlSi3O8 | 2.54 - 2.57 |
| Na Feldspar | NaAlSi2O8 | 2.62 - 2.76 |
| Kaolinite | Al2Si2O5(OH)4 | 2.61 - 2.66 |
| Muscovite | varies | 2.76 - 3.0 |
| Hematite | Fe2O3 | 5.2 - 5.3 |
| Serpentine | Mg3Si2O5(OH)4 | 2.5 - 2.6 |
| Illite | complex | 2.6 - 2.86 |
| Montmorillonite | complex | 2.74 - 2.78 |
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