Gold Recovery & Lab Validation
Independent assays and metallurgy confirm high-grade gold with 90–95% recovery using conventional flotation.
Independent Results at a Glance
Multiple third-party labs over several decades show high-grade assays and strong metallurgical response. Modern flotation testing produced rich concentrates and 90–95% gold recovery using standard, globally available reagents.
2012 – BNR003 Fire Assay
Gold up to 79.1 g/t Au (FA/Grav). Confirms bonanza-grade zones.
2009 – MSRDI Flotation
90–95% gold recovery to concentrate; free-milling gold observed; rich first-cleaner concentrate produced.
1991 – Skyline / Phelps Dodge
Channel samples confirm up to 68.8 g/t Au; multiple high-grade results across the program.
2015 – FLSmidth
Independent lab work confirms recoverability of gold and copper with conventional flowsheets.
Metallurgical Performance
- Recovery: 90–95% Au to rougher/cleaner concentrates under standard flotation conditions (MSRDI, 2009).
- Concentrate Quality: First-cleaner concentrates reported extremely high contained Au values, demonstrating efficient upgrading potential.
- Gold Type: Free-milling gold identified under microscope; compatible with gravity plus flotation flowsheets.
- Reagents: Conventional reagents readily available globally; no exotic consumables required.
Key Laboratory Results (Summary)
| Year | Lab / Group | Test Type | Highlight Result |
|---|---|---|---|
| 2012 | BNR003 (FA/Grav) | Fire Assay | Au up to 79.1 g/t |
| 2013 | SGS Labs | NI 43-101 Standards | Confirmed gold grades up to 21.4 g/t and copper up to 16.7% |
| 2009 | MSRDI | Flotation Metallurgy | Au recovery 90–95% |
| 1991 | Skyline / Phelps Dodge | Channel Sampling | Au up to 68.8 g/t |
| 2015 | FLSmidth | Lab Validation | Gold & copper recoverable by conventional flowsheet |
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