An Extended Investigation of High-Level Natural Radioactivity and Geochemistry of Neoproterozoic Dokhan Volcanics: A Case Study of Wadi Gebeiy, Southwestern Sinai, Egypt

High-level natural radioactivity, geochemical, geological, and radiological hazard assessment of the poorly investigated Wadi Gebeiy Dokhan volcanics rocks are discussed. located in Southwestern Sinai, Egypt, covering an area ~1.3 km2. represented by porphyritic dacite. Geochemically, they have medium-k characters originate from calc-alkaline magma within a arc environment. Along fault plane striking NNE-SSW, at its intersection with NW-SE plane, altered occur high radioactive anomalies. Radiological parameters (absorbed dose rate, radium equivalent, activity annual effective dose, external internal indices) used to evaluate their suitability as ornamental stone. Except for absorbed all indices show that unaltered can be Controversially, applied reveal higher content than recommended values UNSCEAR, reflecting risk on human organs.