Irfan, U.R. et al. 2017. Hydrothermal Alteration Mineralogy Associated with Gold Mineralization in Buladu Area, Gorontalo, Northern Sulawesi, Indonesia. International Journal on Advanced Science, Engineering and Information Technology. 7, 6 (Dec. 2017), 2244–2250. DOI:https://doi.org/10.18517/ijaseit.7.6.3837.