It is possible for any granite sample to contain varying concentrations of uranium and other naturally occurring radioactive elements.
Brazilian granite radon.
Color and uranium content.
This is not the only method for measuring the amount of radon coming from the granite but it is the most economical.
The reports were about granite countertops that contain radium which can emit radon a radioactive gas that can cause lung cancer.
What about radon and radioactivity in granite countertops.
Does the epa believe there is a danger of radon gas or associated radiation being emitted from granite countertops.
Radon that originates in the soil is the main cause of radon problems the epa says.
The us epa recommends taking corrective measures for radon levels at or above 4 pci l the us epa encourages you to consider reducing your radon levels for readings between 2 and 4.
The epa says that approximately one of every 15 homes throughout the country whether new or old has elevated radon levels.
Ok so the risk from granite is minuscule but how common is radon in u s.
Granites can be black gray pink or red depending on the colors of the constituent minerals.