Geology and Mineralization
Mineralization at Toroparu has been intersected in drillholes for up to 2.5 km along strike, up to 250 m wide, and up to 600 m in depth, and at Sona Hill for up 900 m along strike, up to 250 m wide, and 300 m deep, andis open at depth. Thin, discontinuous mineralized shear zones at Toroparu are developed mainly in the volcanic rocks. Higher grade, discontinuous shear zone hosted mineralization is narrow and mostly parallel to the schistosity. The main controls on mineralization are the west-northwest striking axial planar schistosity and vein swarms that are well developed in the volcanic rocks, and the folded contact between an intrusive complex and the volcanic rocks, particularly the contact of an igneous breccia that forms an important rheological contrast, similar to many other orogenic gold deposits that are strongly controlled by competency contrasts. The deposit dips roughly 55° to the west.
The Sona Hill deposit is located 3.2 kilometres southeast of Toroparu, and has similar controls on mineralization but strikes to the north and dips around 30° to the west.