###### Abstract
[12] conducted advanced nuclear radiation shielding studies on mafic and ultramafic complexes, integrating lithological mapping to better understand their shielding potential. In a subsequent study, [PERSON] et al. [13] evaluated the radiation-shielding competencies of ultramafic-alkaline-carbonate complexes using both experimental methods and Monte Carlo simulations, supported by detailed lithological characterization. Similarly, [PERSON] et al. [14] estimated the radiation-shielding capacity of different rock types through combined experimental and simulation approaches. [PERSON] et al. [15] focused on calculating the gamma ray attenuation coefficients and exposure buildup factors for select rocks to assess their effectiveness in gamma radiation-shielding applications. Furthermore, the researchers provided insights into the petrogenesis of high-K calc-alkaline granodiorites from the SE Lhasa block, Tibet, linking their geological formation processes to recycled subducted sediments, which may influence their mineralogical composition relevant to shielding properties. Collectively, these studies contribute valuable data toward identifying natural rocks with potential applications in radiation shielding [16]. [PERSON] et al. [17] investigated the radiation-shielding properties of various igneous rocks from the Isparta province across different gamma energy levels, combining experimental and theoretical approaches to provide comprehensive data on their effectiveness as natural shielding materials. Similarly, [PERSON] et al. [18] examined the gamma radiation-shielding performance of hematite-serpentine concrete composites enhanced with WO\({}_{3}\) and Bi\({}_{2}\)O\({}_{3}\) micro- and nanoparticles, demonstrating that the addition of these heavy metal oxides significantly improves the concrete's shielding efficiency, as validated through MCNPX Monte Carlo simulations. These studies contribute valuable insights into developing advanced radiation-shielding materials by leveraging both natural rocks and engineered composites. In another study, [PERSON] et al. [19] examined the use of steel slag as an aggregate in concrete for gamma ray protection and confirmed that incorporating 50% slag significantly improves gamma-shielding effectiveness. [PERSON] and [PERSON] [20] studied heavyweight concretes containing lead-zinc mine waste serpentine rock within the energy range of approximately 662-1460 keV and showed that the strength of the concrete influences its radiation-absorption capability. In geology, [PERSON] et al. [21] evaluated neutron and charged particle-attenuation properties in volcanic rocks using the Monte Carlo method for neutrons and the SRIM program for charged particles. [PERSON] et al. [22] investigated the radiation-absorption properties of sandstone, one of the sedimentary rocks, while other researchers [4] have evaluated the radiation-shielding performance of limestone. Radiation-absorption characteristics have also been studied in some metamorphic rocks such as metagabbro, marble, and gneiss [23]. Among these rock types, serpentinites are generally considered suitable for use as aggregates in radiation-shielding concrete. The high radiation-absorption capacity of serpentinites is attributed to their high density and content of heavy elements (e.g., Fe, Mg). Studies have shown that concretes containing serpentinite exhibit gamma-absorption performance comparable to that of barite- or hematite-based concretes in experiments involving gamma sources such as \({}^{137}\)Cs (662 keV) and \({}^{60}\)Co (1.17 and 1.33 MeV). The radiation-absorption property of a material depends on its density, high H\({}_{2}\)O content in the crystalline structure, and suitable additives (such as colemanite and boron minerals) [24; 25]. Serpentinite, composed of serpentine minerals (lizardite, chrysotile, antigorite), is a metamorphic rock. It is usually associated with small amounts of dolomite, magnetite, chlorite, chromite, talc, tremolite, and brucite minerals. It has a density of less than 2.7 g/cm\({}^{3}\)[26].