Table 2 The mineralogical compositions of the studied bulk samples (wt%).
Sample No | AZ01 | AZ02 | AZ03 | AZ04 | AZ05 | AZ06 | AZ07 | AZ08 | AZ09 | AZ10 |
|---|---|---|---|---|---|---|---|---|---|---|
Kaolinite | 66 | 69 | 68 | 71 | 64 | 65 | 68 | 63 | 65 | 67 |
Quartz | 28 | 27 | 31 | 28 | 34 | 34 | 29 | 34 | 33 | 31 |
Hematite | 3 | 3 | Nd | Nd | Nd | Nd | Nd | 2 | 2 | Nd |
Illite | 2 | Nd | 1 | 1 | 1 | 1 | Nd | Nd | Nd | 1 |
Feldspar | Nd | Nd | Nd | Nd | Nd | Nd | 1 | Nd | Nd | 1 |