sedimentary
Oil Shale
Kerogen-rich marlstone
AI-generated identification · may be incorrectHardness 2-3 on Mohs scale, dark gray to black color, dull luster, very fine-grained laminae, specific gravity 1.6-2.5.
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Physical properties
Hardness 2-3 on Mohs scale, dark gray to black color, dull luster, very fine-grained laminae, specific gravity 1.6-2.5.
Formation & geological history
Formed through the deposition and compaction of organic-rich mud, algae, and silt in anoxic aquatic environments over millions of years.
Uses & applications
Primarily evaluated as an energy resource for synthetic oil extraction, and occasionally used in cement production or carbon sequestration research.
Geological facts
Contains significant amounts of kerogen, which yields liquid hydrocarbons when heated to high temperatures. It is one of the most abundant hydrocarbon resources globally.
Field identification & locations
Identified by its fine lamination, dark color, and a distinctive petroleum-like odor when freshly scratched or burned. Found extensively in the Green River Formation of the western United States.
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