In 2017 Clancy acquired the Hong Kong Gold Project located in the Pilbara region of Western Australia (Figure 1) and subsequently farmed out 70% of the Project to Pacton Gold in October 2018.
The project contains over five strike kilometres of lower Fortescue Group rocks including both the Hardey Formation and the Mount Roe Basalt, as mapped by the Geological Survey of Western Australia (GSWA). Novo Resources describe this stratigraphy as being “the key to the recent new conglomerate gold discoveries in the region”.
Previous explorers have also targeted Archaean lode hosted gold mineralisation and VMS mineralisation.
Location, Infrastructure & Tenure:
The Project is located 100km south-southwest of Port Hedland in the Western Pilbara Goldfield of Western Australia. Access to the Project is via the sealed Great Northern Highway for 100km south of Port Hedland thence via good quality graded roads.
The Hong Kong Gold Project consists of a single Exploration Licence, 47/3566, covering 40km2 with an expiry date of 19 July 2022.
The exploration licence is located wholly within the Yandeyarra Aboriginal Reserve.
GSWA mapping has outlined a highly prospective >5km strike length of the basal contact between the Mt Roe Basalt and older Archaean Basalt.
The Mt Roe Basalt forms as distinctive red ridges with well-developed scree slopes. The Hardey Formation essentially comprises of conglomerate with a few minor interbedded sandstone occurrences. The polymictic conglomerate includes clasts of basalt, chert, granite, shale, dolerite and other lithologies with diameters up to 1m. The clasts are rounded to angular.
Numerous prospecting workings (dryblowing) were located along creeks draining from the conglomerate.
The Archaean Pilbara Well Greenstone belt crops out southeast of the Lower Fortescue Group lithologies. The greenstone belt includes metabasalts, ultramafics and silicified sediments which have been metamorphosed and deformed by up to three phases of ductile deformation.
Historical Exploration & Mining:
The John Bull workings have collapsed obscuring the scale of the historical operations. A tight, sub-vertical fault with quartz veins that strike 025o lies exposed in a 40m deep shaft developed in carbonated mafic rock at the main cluster of workings. Mullock includes minor quartz-carbonate vein material. Quartz porphyry occurs immediately west of the main workings.
A shallow pit sunk into fresh metabasalt, 100m east of the main workings, has exposed deformed quartz-carbonate-chlorite veins with apple green sericite and disseminated native gold. Rock chip sampling of the quartz-carbonate veining has reported up to 71.4g/t gold.
Last Chance workings comprise of a 4m deep stope extending for 20m on a 20cm wide quartz-carbonate vein. Chip samples from laminated quartz veins reported results of up to 45.5 g/t gold.
Historical workings extend over 150m strike length. A tight fault with quartz veins striking 015 to 025o and dipping 65-70o East, is exposed in several shafts and stopes developed to a maximum depth of 40m. Mullock samples include variably altered chlorite-carbonate-sericite mafic rock. Laminated quartz-carbonate veining contains limonite pseudomorphs (after sulphide) and lamellae of apple-green sericite. Sampling of the quartz-carbonate vein material reported up to 33.2 g/t gold.
Foochow is a series of pits and stopes that extend over a strike of 70m, to around 10m depth. Mullock dumps carry chlorite-carbonate-sericite altered dolerite commonly with limonite pseudomorphs. A single rock chip sample taken of laminated quartz vein material reported 14.9 g/t gold.
Empress workings comprise of a deep shaft to approximately 40m and stoping has occurred over 50m strike length. Mullock material surrounding the shaft is massive to weakly foliated dolerite, variably altered to chlorite-carbonate-sericite. Numerous small quartz-carbonate-pyrite veins cut the altered dolerite. Sampling of laminated quartz vein material, north of the workings, reported 11.2 g/t gold.
Hong Kong is represented by a group of workings comprising of a 20m shaft and two stopes of similar depth located over northeast-striking structures developed in altered mafic rock, including dolerite. More workings extend 160m north-northeast of Hong Kong where a 10m deep shaft and stopes extend over 40 metres of strike.
Mullock dumps indicate extensive chlorite-carbonate alteration of mafic host rocks and laminated quartz-carbonate veins. More intense alteration in narrow proximal zones (adjacent to veins) comprise of bleached zones of sericite and carbonate. Sampling of quartz vein material reported results of up to 5.35 g/t Au.
Empress East #2
A 40m long series of stopes and pits. The deepest extent of workings is approximately 10m. Mullock is massive but strongly carbonated mafic lithologies with small quartz-carbonate veining and apple green sericite on vein margins. Altered wall rock sample reported 0.054 g/t Au.
Arizona is located a few hundred metres east of the Princess May workings. The strong carbonate alteration evident suggests that Arizona lies within the John Bull Shear Zone. Sampling conducted across a variety of styles of alteration and mineralisation reported values up to 1.24 g/t gold in a quartz-chlorite porphyry. The porphyry is similar to that observed at John Bull.