Kootenay Silver Inc. (TSXV:KTN) announced that metallurgical testing on the diatreme hosted Promontorio Silver resource indicated gold within pyrite can be effectively recovered through post pressure oxidation treatment.
As quoted in the press release:
After pressure oxidation 94.5% of the gold was extracted from pyrite concentrate. The pyrite concentrate had a gold head assay of about 3.0 gpt and about 98% of the pyrite was oxidized. The Company reports an additional test is now underway to assess the gold recovery with partial oxidation of the pyrite concentrate of approximately 50%.
Kootenay Silver Inc. President and CEO, James McDonald said:
The results from this metallurgical testing is a positive development as the Promontorio resource and mineral system contains a substantial amount of gold that has yet to be factored into any of our resource calculations. While additional work is required to assess the economics and capital costs of oxidation, and what the potential net benefits would be, these results are a promising first step, as we continue to assess the gold component at Promontorio.