piece slate rock isolated white background |
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navigate by keyword : alteration background black carbon coal created crystal finegrained foliated fossil fuel geology granite grey isolated lowgrade lump macro material metamorphic metamorphism mineral mudstone natural nature object ore piece raw regional rock rough shale slate texture tone white |
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Slate is a fine-grained, foliated metamorphic rock that is created by the alteration of shale or mudstone by low-grade regional metamorphism. |
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