Epithermal Au-Ag deposit.
Gold mineralisation hosted within multiphase, epithermal quartz-adularia and quartz-chlorite fissure veins, breccias, and stockwork veining.
Ref.:
Gemmell, J. B. (2007): Hydrothermal alteration associated with the Gosowong epithermal Au-Ag deposit, Halmara, Indonesia: Mineralogy, geochemistry, and exploration implications. Economic Geology 102, 893-922.