Shale specimen. This sample of shale, which contains small nodules of clay ironstone, is from the Lower Coal Measures deposit, Brynamman, Carmarthensh

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Shale specimen. This sample of shale, which contains small nodules of clay ironstone, is from the Lower Coal Measures deposit, Brynamman, Carmarthenshire, Wales.

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Size: 3676px × 4754px
Photo credit: © NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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