The La India epithermal gold system is near the southwestern margin of a broad belt of Tertiary-aged volcanic rocks that forms the Central Highlands of Nicaragua.
Gold mineralisation occurs in quartz veins, often with a component of adularia and rarely calcite. The majority of the quartz veins are fissure veins that filled open spaces in extensional structures: planar veins filling open faults and fractures, and breccia matrix and stockwork veins infilling spaces formed along strike, in the footwall and at the intersection of faults.