Portilla Castañeda, M.R., Salazar Abanto, J.C. and Jheferson Alexis, P.E. (2026) “Physicochemical and Mineralogical Study of Quartz Sandstones for Use as Fine Aggregates in Construction Materials, Quelluacocha Hamlet, Cajamarca – 2025”, LACCEI, 1(14). doi:10.18687/LACCEI2026.1.1.1911.