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Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g., kaolin, Al2Si2O5(OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite. Shale is characterized by its tendency to split into thin layers (laminae) less than one…
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clay shales minerals rock water black particles quartz iron compaction sedimentary less rocks illite fissility may anoxic deposited color carbon
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Shale | is a | fine-grained | 0.90 | text |
| Shale | is a | most common sedimentary rock.The term shale is sometimes applied more broadly | 0.90 | text |
| molybdenum | instance of | Some black shales contain abundant heavy metals | 0.80 | text |
| uranium | instance of | Some black shales contain abundant heavy metals | 0.80 | text |
| vanadium | instance of | Some black shales contain abundant heavy metals | 0.80 | text |
| and zinc | instance of | Some black shales contain abundant heavy metals | 0.80 | text |
| Shale | related to As hydrocarbon source rock | The | 0.60 | section |
| Shale | related to As hydrocarbon source rock | These | 0.60 | section |
| Shale | related to As hydrocarbon source rock | As | 0.60 | section |
| Shale | related to As hydrocarbon source rock | Individual | 0.60 | section |
| Shale | related to Composition and color | Shales | 0.60 | section |
| Shale | related to Composition and color | The | 0.60 | section |
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