Assessment of Whole-Rock Geochemistry and Granite Fertility Indicators of the Nonggeori Granite, Taebaek-Sangdong Metallogenic Belt, Korea

This paper provides a whole-rock geochemical dataset (major oxides and trace elements, 57 analytes) and derived granite fertility indicators for the Precambrian Nonggeori Granite exposed in the Taebaek-Sangdong metallogenic belt (Northeastern Yeongnam Massif, South Korea).Two representative samples (NG1 and NG2) were collected from the pluton, powdered (<105 μm), and analyzed at Activation Laboratories Ltd., using lithium borate fusion or four-acid digestion followed by inductively coupled plasma optical emission spectrometry, inductively coupled plasma mass spectrometry, and fluoride ion selective electrode measurements.The samples are high-silica leucogranites (SiO 2 , 73.30-74.08wt.%) with low MgO (0.17-0.38 wt.%), CaO (0.44-0.62 wt.%), and Fe 2 O 3 (T) (1.47-1.69wt.%).Both samples are peraluminous with Al 2 O 3 /(Na 2 O+K 2 O+CaO)≈1.30.Trace-element signatures include elevated Rb (313-341 ppm), Cs (19.8-23.1 ppm), and Sn (12-19 ppm) and low Nb/Ta (3.87-4.44),collectively suggesting an evolved granite with a rare-metal affinity.When compared with 15 published criteria for Li-Sn-bearing fertile granites, NG1 satisfies 11 indicators whereas NG2 satisfies five indicators, implying significant intra-pluton heterogeneity in fractionation and fertility signals.The dataset can serve as baseline information for screening fertile zones within the Nonggeori Granite and for vectoring exploration toward rare-element (lithium-cesium-tantalum type) pegmatites, as well as for designing follow-up mineral-chemical and geochronological studies.