Fraser Range Project
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The Fraser Range Project covers two zones of the extensive, 400km long, Fraser Range geological belt which was proven prospective for nickel mineralisation and is host to the world-class Nova-Bollinger Ni-Cu-Co massive sulphide mine deposit discovered in 2012.
The Fraser Range Project comprises two tenement blocks of Exploration Licences totalling 727.4 km2 in area in the Albany-Fraser Orogen which are prospective for Ni-Cu-Co sulphide deposits. The Albany-Fraser Orogen is dominated by the northeast-trending Fraser Zone, a suite of high-grade metamorphic rocks that have a strong, distinct geophysical signature in both aeromagnetic and gravity data. The Fraser Zone comprises mainly metagabbroic rocks interlayered with sheets of granitic gneisses.
Kitchener - Nickel-Copper-Cobalt
The northern tenement, Kitchener (230 km east of Kalgoorlie), is accessible via the heavy vehicle Trans-Access Road running parallel to the Trans-Australia Railway line. Drive time from Kalgoorlie is approximately two and a half hours with numerous four-wheel drive tracks allowing access to exploration areas.
The Kitchener area to the northeast of Yardilla is prospective for Ni, Cu and Co mineralisation in mafic rocks and is completely covered by transported Quaternary aeolian sands and Tertiary coastal and marine sediments of the Eucla Basin. Based on geological and geophysical interpretation by GSWA, the western half of the area is dominated by strongly metamorphosed metagabbro, metagranite and minor metasedimentary rocks of the Fraser Zone.
Yardilla – Nickel-Copper-Cobalt & Gold
The southern Yardilla group of three tenements (100km east of Norseman), straddle the Eyre Highway east of Norseman as well as the Fraser Fault which separates the Fraser Zone from the adjoining older Biranup Zone to the west. Well maintained station tracks provide easy access from the bitumen highway to exploration sites with total travel time from Kalgoorlie being approximately three hours.
The Yardilla tenements straddle two Proterozoic domains separated by the Fraser Fault. The north-western domain of the Yardilla area dominated by metasedimentary rocks with minor granite gneiss is interpreted to be part of the Paleoproterozoic Biranup Zone. The south-eastern magnetic domain is hosted by layered mafic series of the Fraser Zone comprising mainly gabbronorite and gabbro. The mafic rocks are interleaved with granite gneiss and felsic to intermediate gneiss, all metamorphosed at granulite facies. The Fraser Zone layered mafic series is host to the Nova-Bollinger massive Ni-Cu sulphide deposit, located about 35 km northeast of the Yardilla tenements. Yardilla South and Fraser Range historical copper occurrences and a number of significant Cu-Ni anomalies occur within ferruginous pelites and quartzites around the area.
Historical drilling by Newmont in the southernmost Yardilla tenement block intersected 0.2-1% Ni in a number of drill holes and elevated Cu and Co indicating potential for Ni sulphides. The Yardilla area is also prospective for gold with calcrete anomalies up to 2.8 ppm Au in rock chips.
Both the Kitchener and Yardilla areas are considered prospective for nickel-copper-cobalt sulphide deposits, and Galileo has access to a large amount of historical exploration data. However, the widespread transported overburden and saline groundwater provide challenging conditions for surface detection of conductive bodies, requiring careful and methodical application of modern scientific methods during exploration.
Previous work by a range of explorers has provided a set of high quality regional data from a highly prospective region. Only limited testing of the project areas has been completed by Creasy Group. CSA Global concludes that there is substantial value to be extracted from the available data.
The magnetic and gravity data require advanced processing and integrated interpretation with other data. Litho-structural interpretation of the data is critical.
This will allow optimum planning of follow-up work, particularly aircore drilling which is the best form of direct testing of the bedrock interface, given the depth of weathering and extensive cover by younger sediments.
The regolith of the project area is complex and the depth of cover may be problematic for geochemical exploration, but there has been little advanced work processing the multi-element data or integration with 3D landform-regolith interpretation. This latter task will be critical to understanding the geochemistry.