claysize |
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navigate by keyword : brown cementing claysize crack geology grains macro material mineral occupy organic rock sand sandsize sandstone sedimentary silt surface swirl tan view yellow |
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Sandstone is a sedimentary rock composed of sand-size grains of mineral, rock, or organic material. It also contains a cementing material that binds the sand grains together and may contain a matrix of silt- or clay-size particles that occupy the spaces between the sand grains. |
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