Table 2 Results of mineralogical composition analysis (XRF and XRD)
Specimen | Major oxide element (Wt%) | Mineralogical composition (Wt%) | Percentage of clay minerals(Wt%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SiO2 | Al2O3 | K2O | Fe2O3 | Others | Quartz | K-feldspar | Albite | Dolomite | Hematite | Clay minerals | Illite | Kaolinite | |
CD-FT-1 | 74.9 | 18.6 | 2.9 | 2.1 | 1.5 | 70.4 | 2.4 | 0.1 | 0.6 | 2.1 | 24.4 | 5.0 | 95.0 |
CD-FT-2 | 73.8 | 18.6 | 2.8 | 2.4 | 2.3 | 72.0 | 2.7 | 0.4 | 0.7 | 1.1 | 23.1 | 3.0 | 97.0 |
CD-FT-3 | 74.8 | 19.0 | 2.7 | 1.8 | 1.8 | 70.8 | 2.7 | 0.1 | 0.8 | 1.4 | 24.2 | 1.0 | 99.0 |