Tyranna Resources Ltd’s (ASX:TYX) joint venture partner has delivered positive test results on high grade gold samples from the Wilcherry project in South Australia.
The tests for Alliance Resources (ASX:AGS) show that gold mineralisation from Weednanna prospect is amenable to conventional grinding and cyanide recovery techniques.
These techniques delivered positive gold recoveries during the tests.
READ: Tyranna Resources' stake in gold prospect gaining in value as Weednanna delivers
Weednanna is the most advanced of the prospects at Wilcherry Hill, which is 61.36% owned by Alliance and 38.64% by Tyranna.
The test work was conducted by ALS Metallurgy Services Australia on two composite samples collected from Target 1 and Target 3.
It demonstrated fast leach kinetics with an average of 91% in 24 hours using a conventional grind size.
Cyanide and lime consumptions low
Cyanide and lime consumptions were low for both samples while there was no evidence of coarse or nuggetty gold.
This metallurgical test work and previous tests in 1999 indicate that gold mineralisation from Targets 1, 2 and 3 is amenable to conventional grinding and cyanide recovery.
Target 4 samples will be tested
Test work will now be undertaken on samples from the new Target 4 gold zone.
Three drilling programs were completed at Weednanna during 2017 for a total of 11,207 metres in four areas of discrete historical high grade gold intersections.
Close-spaced drilling is required for accurate resource definition.
The improved understanding of the mineralisation style is being used to better define the distribution of gold at Weednanna.
Wilcherry 2018 work program
The joint venture has planned a work program at Wilcherry in 2018 which comprises:
- Test the limits of the high grade gold shoot at Weednanna Target 4;
- Metallurgical tests on new Target 4 gold zone;
- Establish 3D geological model and estimate a mineral resource;
- Test new target areas at Weednanna using both the geological model and knowledge gained to date; and
- Test the next round of regional HEM/MLEM targets for base metals.
The Wilcherry project is within the southern part of the Gawler Craton in the northern Eyre Peninsula of South Australia.
It comprises seven exploration licences covering 1,198 square kilometres.
The project area is prospective for economic concentrations of gold and base metals, including tin and zinc-lead-silver.