Company and Mining

20 April 2017


  • JORC compliant gold resource increases 93%, grade increases by 23%.
  • New Inferred resource: 1.8Mt at 2 g/t gold for 302,000 Oz of gold, including;
    • Quartz Zone inferred resource of: 244,000 tonnes at 9.5 g/t gold for 75,000 Oz gold
    • Inferred Copper resource of: 608,000 tonnes at 0.64% Cu for 3,870 tonnes of copper
  • Mineral resources outcrop at surface; only been drilled to 100 metres vertical depth.
  • Mineral resources remain open at depth and along strike.
  • New inferred gold resource identified by drilling represents less than 5% of the mineralised faults identified by rock chip sampling to date
  • 95% of mineralised faults identified via rock chip sampling still to be drill tested
  • Mining optimisation study and metallurgical test work underway

2017 JORC Compliant Resource Estimate

White Cliff Minerals Limited (“White Cliff” or the “Company”) is pleased to report a new JORC compliant inferred resource for the Aucu gold deposit, using a lower cut-off grade of 1 g/t gold, of 1.8 million tonnes grading 5.2 g/t gold, for 302,000 ounces of contained gold. The new resource represents a 93% increase in contained gold ounces and a 23% increase in average grade over the previous gold resource reported in April 2015.

Quartz Zone Delivers High Grade Resource: 75,000 Ounces of Gold at 9.5 g/t Gold

Importantly the new resource contains a very high grade zone (Quartz Zone) of 244,000 tonnes at 9.5 g/t gold containing 75,000 ounces of gold, which starts at surface. Surface extensions of the high grade Quartz Zone have been identified and will be drilled in the coming field season.

Drilling Increases Copper Resources

This latest resource estimate also identified a new inferred copper resource, using a lower cut of grade of 0.25% copper, of 608,000 tonnes at 0.64% copper, containing 3,870 tonnes of copper. The new resource adds to the existing inferred copper resource of 10 million tonnes at 0.41% copper containing 41,000 tonnes of copper metal

New Mineral Resources represent less than 5% of identified mineralised faults

These new gold and copper resources start at surface, have only been drilled to 100 metres vertical depth and remain open along strike and at depth. The reported gold resources represent less than 5% of mineralised faults identified by rock-chip sampling to date. Approximately 95% of the mineralised faults identified by rock chip sampling are still to be drilled. The gold bearing mineralised structures extend beyond the current resource estimate area over a length greater than 3,000 metres and occur as multiple lodes (Figure 1). Given these factors there is significant potential for substantially more gold resources to be identified from further drilling.

WCN_MAP 210417

Figure 1: Location map of drilling showing Inferred gold resources (red hatch) that represent ~5% of the identified mineralised faults. 95% of the mineralised faults identified by rock chip sampling are still to be drilled (dashed blue and green lines)

Mining Optimisation Study

The Company is pleased to report that a preliminary open pit mining optimisation study is underway to establish the baseline economics of the Aucu project and to assist with optimising future drill programs. Subject to a positive study outcome the Company will then seek to progress to a preliminary feasibility study that will allow the Company to submit an application for a mining license.

Metallurgical Test Work

In conjunction with the resource estimate the Company is also conducting a substantial gold and copper metallurgical test work program to better outline potential processing options for the deposit. Previous metallurgical test work produced high gravity gold recoveries (88.8% gravity recoverable and 99% total recoverable gold). Assuming the current metallurgical studies produce similar results as encountered in previous studies, the Company believes that a low-cost simple gravity plant could allow the project to provide substantial cash flow within a short time frame.

Exploration and Drilling Program – 2017

Exploration planning for 2017 is well advanced, with the bulk of planned drilling focussing on extensions to the existing mineralisation. The Company has also planned several new tracks that will cut across the Lower Gold Zone (LGZ) south of the Quartz Zone, where several outcropping quartz reefs have mineralised rock chip assay results. The Company will release a formal exploration update once planning is complete.

For further information, please see the link below to today’s ASX announcement.

ASX Annoucement