texture of chert rock in the nature. Chert is a sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide.

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abstract architecture background banded bedded brown cambrian chalcedony chert close-up closeup design discovery faulting fold formation fracture gate geological geologist geology grunge layer material mineral natural nature old orange oregon outdoors pacific pattern quartz ribbon rock rough sediment sedimentary sedimentary rocks shells shore silica stone strata surface texture textured wall wallpaper
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