D. C. . A.N and M. Ihsyam, “Vertical Distribution of Silica Content Based on Drill Hole Depth in a Nickel Laterite Deposit, Towara Village, North Morowali, Indonesia”, JGCEE, vol. 1, no. 4, pp. 234–241, Dec. 2025, doi: 10.63288/jgcee.v1i4.19.