The Paperbark Project consists of one exploration permit (EPM14309), covering an area of 75km2.
Location and access
The Paperbark Project is located near the Gulf of Carpentaria, known as the ‘gulf’ district of Northwest Queensland, Australia, and is located approximately 215km north-northwest of Mount Isa and 25km southeast of the Century Mine in northwest Queensland. Access to the property is via Riversleigh Station, from the Riversleigh-Lawn Hill Road and via using local station tracks.
Prospectivity and work plan
Previous exploration focused on the stratiform mineralisation within sedimentary rocks analogous to the Century Pb-Zn deposit. It is highly likely that the discovery and proximity of the giant stratiform Century deposit influenced exploration programs to focus on stratiform mineralisation. Stratiform mineralisation similar to Century remains a high priority exploration objective in the Paperbark Project area, although there are also multiple locations where faults intersect favourable stratigraphy, which are considered high priority targets for MVT-style mineralisation similar to that delineated at the JB Zone.
Structural modelling of faults and stratigraphy will be key to effective exploration targeting and drill hole design. This can be achieved by remote sensing geophysical methods which can detect mineralisation associated with significant iron sulphides and/or marcasite haloes by induced polarization (IP) and ground electromagnetic (EM) methods (Paradis et al. 2007, Leach et al. 2010). For mineralisation which have minimal, or no iron sulphides IP and EM methods may not be useful for defining geophysical targets, however magnetic surveys may be utilised to determine and interpret primary depth to basement, basement structures and prospective fluid conduits.
At the Grunter North Prospect, the large area of anomalous copper near surface was found but with limited success in a single drill hole drilled by Pursuit to identify a substantial body of copper sulphide mineralisation at depth. Within prospective basins anomalous base metal geochemistry and/or sub-economic mineralisation may extend for kilometres, however vectoring towards main mineralised is still possible.
The Company intends to undertake detailed mapping, geochemical sampling, geophysical surveys, drilling, downhole geophysics and metallurgical testing at the Paperbark Project.
Further information is set out in section 3 of the Independent Geologist Report.