Bryah Resources Limited (ASX:BYH) has discovered visible free gold during its recently completed gold drilling programme at the Windalah prospect in the Bryah Basin, of Western Australia.
A sample taken from the reverse circulation (RC) residual samples held on site was recently panned by the company’s on-site geologist to see if any visible free gold was present in the high-grade interval of two metres @ 17.19g/t Au from three metres in hole BBRC049.
Free gold was clearly visible in the panned sample.
Managing Director, Neil Marston, said the company now intends to submit a batch of selected samples from the recent drilling programme for testing for gold recovery by cyanide using a six-hour bottle roll leach at Intertek Australasia’s laboratory in Perth.
The sample bags containing all residual RC sample from the drilled metre intervals will be recovered from site and delivered to Intertek for analysis by their LeachWELL technique. The full bags will be weighed and split to produce a 1,000-gram sample for testing.
High grade cyanide leaching utilises the LeachWELL accelerant to determine the cyanide extractable gold and provides an indication of potential recoveries in metallurgical processes and circuits. Recovery and analysis of the residues (tailings) allows reporting of total gold values and thus determining the refractory gold fraction.
This testwork also provides a Quality Assurance/Quality Control comparison with the initial RC sample analysis which was undertaken using a 50-gram Fire Assay (FA50) method.
Meanwhile, an RC drilling programme of approximately 2,000m is progressing with 1,084m completed to date. The first batch of samples for analysis is planned for delivery to a laboratory in Perth later this week.
Mr Marston said the RC drilling programme is targeting the high priority Windalah Prospect and a significant electromagnetic (EM) conductor target located 7km north of the Peak Hill Gold Mine and 65km west of Sandfire Resources’ DeGrussa Mine.
