Sweep the area to remove loose trash and dirt
The first step in cleaning a marble surface is to prepare it for cleaning. Clean the marble area around your fireplace of loose trash and dirt by sweeping it with a broom. Sweep the trash into a dustpan and dispose it off properly.
Start with water
For regular cleaning, avoid using strong cleansers on your marble surface, rather use lukewarm or slightly hot water and a rag to clean it. Make sure you wipe off the surface properly once you are done to avoid water stains or mineral deposits on marble.
A mild dish detergent also works
Take some dishwashing soap or detergent and mix it with water (slightly hot but not boiling). Apply this soapy solution to the marble surface around your fireplace with a rag. This will effectively remove dirt or dust stains on the marble.
If the stains around your fireplace are tough and stubborn, use a commercial cleaner that is designed especially for marble. Marble is an extremely porous element that is vulnerable to a number of ingredients present in chemical cleaners (especially the acidic compounds). Read the list of ingredients on the cleaner to make sure it does not contain anything that can damage your marble.
Follow the manufacturer’s instructions carefully to clean the marble around your fireplace. Wash the area thoroughly with normal water once you are done. Blot the entire area with paper towels or a clean dishwashing cloth.