Red and green granites' radioactive

  Generally speaking: marble is metamorphic rock, soil contained radioactive substances and basically the same, it need not consider the radiation problem. Granite is igneous rocks, contained radioactive substances and volcanic strata formed when the material related to radioactive substances often with the Health and non-ferrous metals, non-ferrous metal compounds produced rock color, so we can rock colors, probably infer whether granite containing radioactive material. Generally see some green and red granite probability of containing radioactive material is relatively large. Such as: The Indian Red, South Africa red, red azaleas, rhododendrons Green. However, as the million-red red, red is Luoyuan category A products, green stone is so, the present detected rhododendrons Green is the highest concentration of radioactive   substances stone products, but most of the radioactive materials are relatively low, such as Lotus Green, Malachite Green; As for the band to spend the Stone, a high-low, but also difficult to distinguish; black, white relatively low, but the number of measurement samples they also can not rule out the possibility of the existence of radioactive higher.

    Radioactive materials can not be judged solely from the color, but should be measured through technical supervision departments authorized certification body of the unit, whichever is the data. Of course, the safest and most reliable way, it is with professional bodies to sample radioactive detection, and for new houses, may also invite qualified professional bodies radioactive detection, the proposed occupancy housing 222 indoor radon concentration measurement.