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| Shale | Quartz | iIlite | Kaolinite | Chlorite | Total clay | Calcite | Siderite | Dolomite | Total carbonate |
|---|---|---|---|---|---|---|---|---|---|
| Opalinus | 13.5 | 44.2 | 18.1 | 3.4 | 65.7 | 12.8 | 0.7 | 1.3 | 14.1 |
| Haynesville | 24.1 | 43.2 | 0.9 | 0.6 | 44.7 | 17.9 | 0 | 3.0 | 20.9 |
| Longmaxi | 36.3 | 35.6 | 0.8 | 0 | 36.4 | 2.0 | 0 | 10.3 | 12.3 |
| Eagle ford | 20.0 | 3.4 | 2.2 | 0 | 5.6 | 60 | 0 | 4.0 | 64 |
