Petrogenesis of the Xingluokeng W-bearing granitic stock, western Fujian Province, SE China and its genetic link to W mineralization

•The granitic stock in the Xingluokeng W deposit was intruded at ca. 152 Ma.•Petrographic variations within the stock are ascribed to co-magmatic evolution via fractionation.•The granites show I-type affinity, mainly derived from Paleoproterozoic meta-igneous rocks.•Fractionation crystal and fluid-rock interaction have contributed to the W mineralization of the Xingluokeng deposit.