Ajigo, I. O. Petrographic Characteristics of Biotite- and Amphibole-Bearing Granites of the Sara-Fier Ring Complex, Northcentral Nigeria: Insights into Variations across Volcanic Centres. J. Nat. Sci. Res. Rev. 2026, 2 (11), 345-356. https://doi.org/10.65150/EP-jnsrr/V2E11/2026-01.