Figure 1: Gold results, after Rogerson (1989)
Rogerson (1989) identified a +370km2 zone of anomalous Au, Cu, As and Hg that was named the ”Upper Ramazon Anomalous Zone” named after the main access river to the area (Rogerson 1989 Au/Cu Anomaly Contour). Within this zone sampling has identified areas of interest for initial programmes at Melilup – Wasinobis, Melilup – Petspets and Rarie’/Puspa for gold.
Figure. 2 Copper Results after Rogerson (1989)
Rogerson noted in the report that potential exists for multiple deposits in the north and up to seven different styles of mineralisation were identified, although these seven styles can be broadly grouped into three:
- Porphyry Cu, Au;
- Epithermal veining (including polymetallic veins and Au); and
- Volcanogenic Massive Sulphides (VMS)
Similarly, within the Upper Ramazon Anomalous Zone sampling has identified areas of interest for the initial copper exploration programmes at Melilup – Topis and Tore – Kunua (see Fig.3).
Tsiperau’s work concentrated on sampling the Diorite, Granodiorite, Monzonite Intrusives at Rarie’ Puspa (similar geology to the intrusives at Panguna, see Fig 1. Regional Geology) and the results of her work has further enhanced this location. Kalia is initially focusing work at Rarie’ Puspa and Melilup.