Table 2 XRD analysis results showing the mineral compositions and contents of the oncolitic limestone from the Cambrian Miaolingian Series, North China Platform
Section name | Sample number | Mineral composition and content (%) | |||||
|---|---|---|---|---|---|---|---|
Quartz | Potassium feldspar | Calcite | Dolomite | Pyrite | Clay minerals | ||
Wuhai section | WHXZ-1 | 4 | 2 | 86 | 6 | 1 | 1 |
WHXZ-2 | 7 | 3 | 79 | 9 | / | 2 | |
WHXZ-3 | 2 | 2 | 89 | 6 | 1 | / | |
WHXZ-4 | 5 | 4 | 83 | 7 | / | 1 | |
WHXZ-5 | 8 | 2 | 80 | 10 | / | / | |
Diaoquan section | DQZX-1 | 2 | 1 | 82 | 15 | / | / |
DQZX-2 | 3 | 2 | 83 | 11 | 1 | / | |
DQZX-3 | 9 | 2 | 79 | 10 | / | / | |
DQZX-4 | 8 | 4 | 75 | 13 | / | / | |
DQZX-5 | 8 | 4 | 75 | 13 | / | / | |
Xiaweidian section | XWDXZ-1 | 2 | / | 95 | 3 | / | / |
XWDXZ-2 | 1 | / | 94 | 4 | 1 | / | |
XWDXZ-3 | 1 | 1 | 93 | 5 | / | / | |
XWDXZ-4 | 1 | / | 94 | 4 | 1 | / | |
XWDXZ-5 | 1 | 1 | 95 | 2 | 1 | / | |
Sandaogou section | SDGZX-1 | 2 | 1 | 95 | 1 | / | 1 |
SDGZX-2 | 2 | / | 97 | / | 1 | / | |
SDGZX-3 | 2 | / | 95 | 2 | / | 1 | |
SDGZX-4 | 2 | 2 | 94 | 1 | 1 | / | |
SDGZX-5 | 1 | / | 95 | 1 | 1 | 2 | |
Fuzhou Bay section | FZXZ-1 | 2 | / | 96 | 2 | / | / |
FZXZ-2 | 1 | / | 98 | 1 | / | / | |
FZXZ-3 | 2 | / | 97 | 1 | / | / | |
FZXZ-4 | / | / | 97 | 2 | / | 1 | |
FZXZ-5 | 1 | / | 98 | 1 | / | / | |
Jinzhou Bay section | JZXZ-1 | 1 | / | 97 | 1 | 1 | / |
JZXZ-2 | 1 | / | 97 | 2 | / | / | |
JZXZ-3 | 2 | / | 98 | / | / | / | |
JZXZ-4 | / | / | 99 | 1 | / | / | |
JZXZ-5 | 1 | / | 98 | 1 | / | / | |