natural chalk stones background soft white porous sedimentary carbonate rock form limestone composed the |
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| navigate by keyword : abstract backdrop background beige calcite calcium carbonate chalk construction crushed debris decorative design diatomite exterior floor geology granit gravel gray grey ground grunge limestone marble material mineral mining mountain natural organic pattern quarry radiolarians rock rubble sedimentary silica soft stone stones surface texture 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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