natural chalk stones background soft white porous sedimentary carbonate rock form limestone composed |
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| navigate by keyword : abstract backdrop background beige calcite calcium carbonate chalk construction crushed debris decoration decorative design diatomite diatoms exterior floor geology granit gravel gray grey grunge industrial landscape limestone marble material mineral mining mountain natural organic porous quarry radiolarians rock rubble sedimentary silica soft stone stones surface texture textured wall white |
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| Natural chalk stones background. Chalk is a soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite. Rock forms from the ooze. Mining concept |
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