## 5 Research on Mineral Prospecting Prediction
### Target Area Delineation and Engineering Validation
#### 5.4.2 Engineering Validation  
Through the geo-electrochemical extraction of element anomalies and assessments of mineralization potential, drilling verification was conducted in the No. One priority anomaly verification area. Drilling projects were successively arranged at points 2, 4, 8, and 12 on the L11 line, where each element showed a single-peak anomaly area, namely, ZK192-11, ZK190-7, ZK192-1, and ZK192-17 (Table 4). An industrial uranium orebody was discovered within the F1 interlayer compressional fracture zone. The orebody exhibits a lenticular morphology, with local occurrences of graphitization, hematitization, and pyritization. The ore body is controlled by drilling a length of 225 m, with a thickness ranging from 0.81 to 9.96 m, an average thickness of 6.67 m, a grade ranging from 0.05% to 1.32%, and an average grade of 0.19%. The ore types can be classified as fractured brecciated dolomite and argillaceous siltstone. The dolomite-type ore exhibits a dark gray color and massive structure, with well-developed hematitization and pyritization alterations. Calcite veinlets were observed to be distributed along cleavage fractures (Figure 12a). Petrographically, the ore is primarily composed of dolomite and calcite. Microscopic examination under alizarin red staining reveals dolomite grains ranging from 0.03 to 0.06 mm in size, accounting for 70-75% of the rock volume, while calcite and other minerals constitute 25-30%. A porphyoclastic to cataclastic texture is evident, characterized by mineral clasts set within a finer-grained matrix. The clasts show no significant displacement and display mutually adapted boundaries. Fractures are filled with comminuted host rock material and calcite (Figure 12c). Based on the backscattered electron images of the dolomite-type ores (not collected during this study but from the same Guangzhou area), uraninite occurs as cryptocrystalline aggregates displaying disseminated and veinlet textures. The veinlets range from 0.02 to 0.15 mm in width. Constituent particles and devitrified microcrystals range from tens to hundreds of nanometers in scale. Vein-type uraninite is closely associated with colloform pyrite and galena (Figure 12e). The siltstone-type ore exhibits grayish-black to grayish-green coloration (Figure 12b) and a fine silt texture. It is primarily composed of quartz clasts within an argillaceous cement. Quartz clasts range from 0.005 to 0.01 mm in size, are subrounded, well-rounded, and moderately sorted. The clay matrix is relatively minor in abundance (Figure 12d). According to the backscattered electron images of the siltstone-type ores (not collected in this study but from the same Guangzhou area), it was revealed that uraninite occurs as disseminated and colloform masses within intergranular spaces, with a particle size of 0.02-0.06 mm Galena is relatively abundant in the ore, primarily exhibiting colloform or veinlet textures in close association with uraninite. Certain galena grains occur as inclusion-like forms enveloped by uraninite (Figure 12f). Based on the above analysis, in key anomaly verification area No. One, the ore body corresponds well with the anomaly (Figure 13), and it has considerable potential for mineral exploration. Drilling projects can be arranged from the west to the east based on the characteristics of the geo-electrochemical extraction profile and planar anomalies to control the deep ore body. Similarly, the A-1, B-1, and B-2 comprehensive anomaly zones also have good prospects for mineral exploration. Conducting more in-depth research and engineering arrangements for these areas is recommended.