SECTION 2 Wharekirauponga Underground Mine C:\D Data\GWS C Drive\GWS\Client Files\1344 OGL - WKP\4 Deliverables\WUG Effects Summary\June 2022\WNP Groundwater Effects Summary_Final_Rev_0.docx 5 2.2 Site Characterisation The Wharekiraponga is a rhyolite hosted epithermal vein system. The system consists of three main vein sets (referred to as the Eastern Graben, Tewaotemutu Stream and Western), each which consist of a main vein some meters in width, with hanging wall and footwall stringer veins sets also present. The entire area is largely overlain by post-mineralisation andesite, however the rhyolite host rocks are exposed at the surface locally as shown by the darker yellow areas of Figure 6 and 7. Figure 6 Geological Plan Showing Surface Rock Types Figure 7 Geological Plan Showing Surface Rock Types
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