US-focused gold junior Revival Gold aims to further test the sulphide resource potential of its Beartrack-Arnett project in Idaho, USA, after promising early metallurgical results from evaluation of an emerging concentrate production process.
The Toronto-listed company said the use of Dundee Sustainable Technologies’ patented Glasslock Process on a high-grade material sample the Joss area at Beartrack-Arnett showed it might be able to boost the gold grade of concentrate while significantly reducing its arsenic content. DST is a subsidiary of Dundee Corporation, an investor in a number of junior minerals companies, including Revival.
“GlassLock Process testing on high-grade underground sulphide material at Beartrack-Arnett boosted the concentrate gold grade 31% and cut the arsenic content by 99% with almost no loss in gold,” Revival said. It said the process had been successfully tested elsewhere and used at an industrial scale at the Tsumeb smelter facility in Namibia, formerly owned by Dundee Precious Metals.
Revival previously reported flotation testing of a 4.6 grams-per-tonne gold composite from the Joss deposit yielded a flotation concentrate grading 50gpt gold, 23% sulphide sulphur and 13.5% arsenic It said DST developed a similar arsenopyrite-rich concentrate from Joss samples before the application of the GlassLock Process generated a concentrate grading 66.1gpt gold, 17.9% sulphide sulphur and 0.19% arsenic. No measurable gold was lost during the process, it said.
“DST’s Glasslock Process offers Revival Gold the opportunity to produce a direct-to-smelter saleable gold concentrate from a potential second phase underground sulphide operation following the planned openpit heap leach phase at Beartrack-Arnett,” Revival CEO Hugh Agro said.
“A 3900m exploration drilling program will be initiated later this year as we continue to test and expand Beartrack-Arnett’s high-grade underground potential.”
Dundee Corporation CEO Jonathan Goodman said the company saw potential to “help unlock additional value” from the Beartrack-Arnett sulphides before investing in Revival.
“DST is expected to play a big role in the future of gold processing with GlassLock already having been successfully tested on projects in Canada, the US and Africa and implemented on an industrial–scale to stabilise arsenic-bearing feed materials at … Tsumeb.”
Results from Revival’s DST metallurgical testing will be presented this week at a Nevada Mineral Processors Division annual meeting in Reno.
The company’s share price has climbed more than 50% in the past six months, giving it a current market value around C$140 million.
