Breaker has a portfolio of 100%-owned gold exploration projects, three of which are located within 200km of the town of Laverton in the Yamarna and Burtville Terranes, and one 100km east of Kalgoorlie, situated in the eastern part of the Eastern Goldfields Superterrane in the eastern Yilgarn Craton, Western Australia.
Breaker’s projects comprise 12 exploration licences (plus an additional three tenement applications) that cover an area of approximately 1,800km2. The tenements target underexplored major regional faults located adjacent to regional anticlines, greenstone belts and fault bends. The interplay of these types of structures has a known spatial association with gold deposits in more intensively explored parts of the EGST. Whilst there is a strong association between crustal-scale shear zones/faults and gold deposits, it is the small-scale faults peripheral to the larger-scale features that are more prospective.
The Company’s granted tenement portfolio comprises five projects known as the Attila West, Dexter, Duketon North, Lake Roe and Ularring Rock Projects. All but the last named are located in the EGST. Access to Breaker’s EGST projects is good and infrastructure in the area is expanding as a result of recent discoveries and mine developments. Breaker’s tenements include approximately 190km of the Yamarna Shear Zone, previously undrilled greenstone belts on three of its projects, and several underexplored major faults in the Burtville Terrane.
The Dexter and Attila West Projects target the Yamarna Shear Zone and are situated along strike or adjacent to recent gold discoveries made by Gold Road Resources Ltd in the Yamarna area. Recent work has identified the Yamarna Shear as a crustal-scale fault that forms a boundary between the newly-identified Yamarna Terrane and the Burtville Terrane. This work also indicates that the Yamarna Shear Zone was active during the main (D4 and D5) gold mineralising events.
The Duketon North Project targets the Hootanui Fault Zone within the Burtville Terrane. Structural studies completed on the Hootanui Shear Zone indicate that this fault was also active during the main (D4 and D5) gold mineralising events. The Duketon North Project is located along strike from the Garden Well, Moolart Well and Rosemont gold discoveries.
The main target at the Lake Roe Project is high-grade gold mineralisation hosted by the upper granophyric portion of a 400m-thick fractionated dolerite situated in a domal geometry in an area of shallow cover. The dolerite is situated geometrically above the Keith-Kilkenny Lineament, similar to that at the Karari-Carosue Dam and Karonie gold deposits located along strike.
Previous company exploration on Breaker’s tenements is limited and on-ground activity consists mainly of part-coverage geochemical surveys with little or no drilling. The main previous explorer on Breaker’s projects is the government. As a result, Breaker has access to a large data base of government data that includes relatively recent full coverage aeromagnetic data, new geological mapping and gravity, seismic, geochronology and, in some cases, geochemical data. Aeromagnetic data interpretation identified multiple priority structural targets for early drill and geochemical evaluation at all projects. Although Breaker’s main focus is gold, the Company’s structural focus creates potential for locating shear-associated intrusions with associated opportunity for rare earth metals, niobium and tantalum.
During 2012/13 Breaker completed multi-element auger soil sampling over all of its projects to screen for large gold deposit signatures. These programs successfully identified eight new +10-20km gold-in-soil anomalies, validating the Company’s structural targeting approach and confirming the ability of Breaker’s geochemical techniques to see through sand cover. Other works completed include an aeromagnetic/radiometric survey, a trial ground electromagnetic survey and considerable data interpretation and analysis. Heritage surveys were completed at the Attila West, Mt Gill and Kurrajong Projects (the latter two projects were sold in May 2016 to Gold Road Resources).
2013/14 field activities included aircore and RC drilling at the Dexter Project, reconnaissance mapping and rock chip sampling at Attila West, Mt Gill and Duketon North and a heritage survey at Attila West. Aircore drilling was also completed at the Attila West and Kurrajong Projects. During 2014/15, exploration activities included a further aircore drilling program at the Dexter Project in August/September 2014, soil sampling (conventional and auger), rock chip sampling, geological mapping and environmental rehabilitation. In addition, extensive data analysis of both historical and Company exploration results was undertaken to improve understanding of geological setting, geochemistry and hydrogeology.
Throughout 2015/16, the main focus has been the Lake Roe Project where an aircore drilling program completed in August 2015 identified a new gold system with intercepts of gold mineralisation including 4m at 7.38g/t. Subsequent aircore and RC drilling have returned hits up to 1m at 19.3g/t, indicating the potential for high grade sulphide lodes. Drilling at Lake Roe continues.