The two recently-identified targets include a big untested magnetic anomaly just 300m north/north-east from the Coogee open pit, which management believes could host gold-copper mineralisation. It is the company’s strongest anomaly in its Coogee mining lease and is its first-priority target.
The anomaly is modelled to lie at a depth of 175m below surface, directly below the main gold-copper mineralisation defined by previous reverse-circulation (RC) and diamond drilling. The compnay says the target has never been tested and could be a deep gold-copper mineralised zone.
Historic drilling within the Coogee mining lease area that also defined two magnetic mineralised copper-gold trends north and west of the Coogee deposit and currently remain open along strike and at depth, also support the modelling.
Javelin recently engaged independent geological consultancy OmniGeoX to compile, review and interpret all existing project drilling and geophysical data to help plan an exploration drilling program, with a view to making the earliest possible start on testing of priority targets.
The Coogee gold project tenements are on the north side of Lake Lefroy in WA’s Eastern Goldfields, about 20km north-east of Kambalda, which is among the State’s earliest nickel mining centres after the original deposit was discovered in 1954. The mine opened in 1967 and was operated by WMC Resources, which was taken over by BHP in 2005.
The project lies within a highly-fertile greenstone belt with multiple gold deposits and abundant gold occurrences nearby including Coogee, Salt Creek, Daisy-Milano and Lucky Bay, in addition to the major St Ives gold camp.
The Coogee gold deposit was discovered in the mid-1990s by Sovereign Resources and was mined by Ramelius in 2013 via an open pit about 70m deep, reporting 147,400 tonnes produced at 4.7g/t gold for 20,400 ounces. Ramelius treated its Coogee ore by conventional carbon-in-leach processing at the Burbanks Mill, south of Coolgardie, reporting 96.4 per cent metallurgical recovery.
Javelin believes there is the potential for a “big gold-copper system” that could lie at depth to the north-west.
That belief is further supported by company’s third priority geophysical target that lies about 750m west of the Coogee open pit and is also associated with a magnetic trend that is open to the north-west. The anomaly has not been followed up, despite the encouragement of a single drillhole put in by Ramelius that jagged 23m going 0.38g/t gold.
Javelin is now planning its next phase of extensional drilling to the west of the new resource envelope in a bid to increase the mineral resource estimate.
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