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Jul 2006 - Avoca Resources

Avoca Resources Limited (AVO) –Becoming a >100,000ozpa ~US$300/oz Cash Cost Gold Producer, initially with Trident

  • Avoca has significantly advanced its understanding of the gold mineralisation at its Trident mine at Higginsville, clearly delineating the 3 main ore types of Athena, Western and Eastern. The current mining plan focuses on building up the Western Zone to a sustainable production rate of >100,000ozpa, and taking ore in the “gap” area while declining both towards the Western Zone and down to Athena.
  • It appears that a production rate of >100,000ozpa can be achieved by 2008 through bulk mining the central area of Trident’s 20m - 25m thick Western Zone using Kanowna-Belle style (sub-level open) stoping while bench stoping the ~5m thick Athena for a combined production rate of >700,000tpa @ >6g/t (>125,000ozpa at a 93% recovery).
  • AVO is taking the short-cut to production through toll-treating its ore in a number of nearby plants, but such expected production rates soon place a strain on regional plant availability. Consequently, AVO appears likely to construct its own 1.0mtpa to 1.5mtpa plant by 2008, especially if Trident continues to grow, and its regional ore sources are treated (such as Fairplay, the Palaeos, and possibly Erin).
  • Trident appears to be a combination of Norseman and St Ives-type mineralisation, with thicker, more continuous and better, steep dipping ultra high grade Athena veins, linked by flats, abutting the Western Zone.
  • Just what production rate can be achieved (potentially >170,000ozpa) and at what cash cost appears to be something that can only be delineated through mining from the Western Zone at possibly >5g/t and Athena at potentially as high as 20g/t. While the initial production depends on what can be mined from the “gap” area.
  • Written by: Keith Goode
  • Thursday, 20 July 2006