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1. Sedimentary rocks: This article does not receive scheduled updates. If you would like to help our coverage grow, consider donating to Ballotpedia. [100%] 2024-08-24 [Energy policy terms] [Energy_policy_terms_and_definitions]...
2. Organic-rich sedimentary rocks: Organic-rich sedimentary rocks are a specific type of sedimentary rock that contains significant amounts (>3%) of organic carbon. The most common types include coal, lignite, oil shale, or black shale. (Earth) [70%] 2023-11-29 [Sedimentary rocks]
3. Iron-rich sedimentary rocks: Iron-rich sedimentary rocks are sedimentary rocks which contain 15 wt.% or more iron. However, most sedimentary rocks contain iron in varying degrees. (Earth) [70%] 2023-11-15 [Sedimentary rocks] [Iron ores]...
4. Organic-rich sedimentary rocks: Organic-rich sedimentary rocks are a specific type of sedimentary rock that contains significant amounts (>3%) of organic carbon. The most common types include coal, lignite, oil shale, or black shale. [70%] 2024-08-24 [Sedimentary rocks]
5. Iron-rich sedimentary rocks: Iron-rich sedimentary rocks are sedimentary rocks which contain 15 wt.% or more iron. However, most sedimentary rocks contain iron in varying degrees. (Sedimentary rocks containing 15 wt.% or more iron) [70%] 2024-08-24 [Sedimentary rocks] [Iron ores]...