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Larvotto Produces First Antimony-Gold Concentrate at Hillgrove

By Stocks Desk · · 2 min read
A large industrial centrifugal concentrator machine sitting on a concrete floor in a mining plant
Illustration: Tradingbird

Larvotto Resources has commenced concentrate production at its NSW mine, activating binding offtake deals with Wogen Resources and Glencore.

Key points

  • Larvotto Resources has started concentrate production at Hillgrove, activating binding offtake deals with Wogen Resources and Glencore.
  • The plant uses a Knelson concentrator in the gravity circuit to recover gold as doré bars before flotation processing.
  • The Midas lode exploration target holds a midpoint estimate of 656,000 ounces of gold equivalent at 5.16 grams per tonne.

Larvotto Resources has officially begun producing saleable antimony and gold concentrate from its Hillgrove project in New South Wales. The company successfully commissioned its flotation circuit and filter presses, allowing it to deliver its first product just one month after restarting operations following refurbishment.

This milestone activates binding offtake agreements with Wogen Resources for antimony and Glencore International AG for gold. According to SMH.com.au, the production launch clears the path for Larvotto to satisfy these contractual obligations and enter the global commodity supply chain.

Binding agreements secure market access

The antimony concentrate, refined to a 60 per cent specification, is covered by a seven-year exclusive deal with Wogen Resources. Wogen holds global sales rights for all antimony output from Hillgrove during this period, with representatives from the UK witnessing the initial production run.

A separate agreement covers the gold stream, where Glencore is contracted to purchase all gold concentrate produced in the first seven years. The expected annual offtake volume is approximately 15,000 dry metric tonnes of concentrate, ensuring a dedicated buyer for the precious metal component.

Plant design prioritizes gold recovery

The processing flow sheet utilizes a gravity separation circuit at the head of the mill to intercept gold before flotation. Instead of standard spiral arrays or jigs, the operation relies on centrifugal and multi-gravity units, specifically a Knelson concentrator, within the grinding circuit.

This configuration allows a portion of the estimated 40,500 ounces of annual gold production to be recovered directly as doré bars on-site. The remaining gold and the antimony proceed through the flotation circuits to produce mixed concentrates.

Resource expansion targets Midas lode

Hillgrove hosts a resource of 1.7 million ounces of gold equivalent at 7.4 grams per tonne, ranking among the top ten antimony deposits globally. The company is now targeting the Midas lode, which has a preferred midpoint estimate of 3.95 million tonnes at 5.16 grams per tonne gold equivalent.

Recent drilling in the Midas zone returned an intersection of 8 metres at 16.11 grams per tonne gold equivalent. This represents the highest-grade result recorded for that specific zone, indicating potential for significant resource growth along the strike from existing workings.

Based on reporting by SMH.com.au, compiled by the Tradingbird desk.

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