- Ultramafic sequence at base of Koolyanobbing Greenstone Belt, historically explored by BHP and WSA
- 7.5km strike of target horizon across WMG’s two tenement areas
- Numerous under-explored Ni-Cu-PGE gossans including Pavarotti and Jock’s Fury
- Historical BHP hole H2 at Jock’s Fury 4.6m @ 1.3% Ni from 42m to EOH – with no follow up
The Pavarotti Project comprises exploration licence E77/2478 and exploration licence application E77/2746 covering 12.8km2. The project is located approximately 50km north-northeast of Southern Cross, in the Southern Cross Domain of the Youanmi Terrane of the Yilgarn Craton, Western Australia.
The project lies on the western side of the Koolyanobbing Greenstone Belt, a northwest trending sequence of mafic and ultramafic volcanic and intrusive rocks with lesser sediments intercalated with BIF horizons forming prominent ridges. The BIF horizons have been exploited since the 1960s, with several open pit iron ore mines that are currently owned by Mineral Resources (ASX:MIN). The greenstone belt is bounded to the east and west by monzogranite and granodiorite.
The western basal ultramafic sequence of the Koolyanobbing Greenstone Belt has been explored intermittently for nickel sulphide mineralisation since the 1970s, with nickel gossans and Kambalda-style channel hosted nickel sulphide mineralisation in komatiite ultramafic volcanics first identified by BHP. This work mostly focused on the Jocks Dream deposit located between WMG’s tenements E77/2478 and E77/2746, but also identified the Pavarotti and Jocks Fury Prospects within E77/2746. Delta Gold subsequently defined a resource of 78,600t at 1.13% Ni and 0.10% Cu at Jocks Dream in 1992 (not JORC compliant), based on the BHP drilling.
The most recent exploration across the Northern Range of the Koolyanobbing Greenstone Belt, including the areas of E77/2478 and E77/2746, was conducted by Western Areas (ASX:WSA) between 2000 and 2014. Their work included airborne magnetics, ground EM and dipole-dipole IP geophysical surveys, RAB, AC, RC and diamond drilling. The majority of this work again focused on the Jocks Dream deposit (outside of WMG’s tenement area) but following a review of historic data, the Pavarotti Prospect became a focus of attention and later work by WSA included 3 further RC drill holes at the Pavarotti Prospect (E77/2746).
The basal ultramafic units running through the project area demonstrate many encouraging indicators for potential Ni-Cu-PGE mineralisation, such as surface gossans and nickel sulphide mineralisation observed in drilling, however a lot of the historic exploration work was ineffective. For example the majority of the historical ground EM surveying across the Pavarotti Project was conducted in 1998, with some follow up in 2008. WMG intends to improve this work using modern higher powered geophysical techniques and then drill test targets identified.