Table 1 Modal (i.e., volume percentage) mineralogical composition of sandstone and shale as constrained in the computer-based geochemical models
Mineral | Sandstone (%) | Shale (%) |
|---|---|---|
Quartz | 46.35 | 21.15 |
K-feldspar | 8.40 | 3.2 |
Plagioclase | 12.00 | 4.0 |
Albie | 0.3 | 4.1 |
Calcite | 0.3 | 2.7 |
Dolomite | 1.10 | 1.9 |
Kaolinite | 4.35 | 3.15 |
Illite | 5.5 | 49.5 |
Chlorite | 0.5 | 4.5 |