- An average gold recovery of 77% from eight composites using conventional processing techniques – gravity and CIL (carbon-in-leach)
- 97% using gravity + flotation.
- A flowsheet of gravity-flotation-CIL on reground concentrate yields 72% gold recovery along with a high mass desulfurized tailings stream
- Further optimization studies are underway.
- Determination of gold recovery and gold deportment to products using standard and commercially employed mineral processing unit operations
- Initial environmental assessment of process tailing stream(s)
- Characterization of gold losses to focus ongoing metallurgical programs to optimize the flowsheet design.
Eight drill core composites representing various locations and grades within the Dolphin/Cleary areas were generated using continuous drill intervals selected to represent potential mill feed. (See map below for hole locations.) The drill hole and interval selections encompassed the three primary gold-hosting lithologies. Results demonstrate that a significant portion of the mineralization is non-refractory and amenable to conventional processing techniques. The composites were prepared using laboratory assay rejects of fresh rock intervals well below the existing oxide cap at Golden Summit. The eight drill hole composites used 1,192m of drill intercepts representing 587 continuous mineralized intervals with over 5,100kg of material. Results from individual holes demonstrate recoveries up to 87.5%. The average recovery from the eight composites was 77% using gravity and CIL. Recoveries increased to an average of 97.5% where gravity + flotation were utilized. Environmental characterization using standard ABA protocols gave a NP:AP ratio of 85:1 on the flotation tailings stream, which would classify them as non-acid generating.
DDH no. | from m | to m | geochem | test calc grade | gold recovery % | |||
grav/flot/regr CIL | grav/CIL | gravity | grav+flot | |||||
Au g/t | Au g/t | |||||||
GS2201 | 441.1 | 648.3 | 1.44 | 1.06 | 88.2 | 87.1 | 45.0 | 99.2 |
GS2203 | 287.8 | 478 | 2.13 | 2.24 | 75.1 | 77.2 | 48.2 | 97.6 |
GS2206 | 383.1 | 586.1 | 1.17 | 1.02 | 80.2 | 87.5 | 42.7 | 97.3 |
GS2207 | 261.9 | 468.7 | 1.35 | 1.78 | 60.1 | 70.2 | 37.8 | 98.1 |
GS2208 | 266.3 | 367.2 | 1.33 | 1.48 | 48.1 | 53.3 | 25.3 | 97.5 |
GS2209 | 419 | 544.5 | 1.26 | 1.54 | 73.6 | 81.2 | 50.7 | 97.0 |
GS2168 | 352.7 | 479.5 | 0.75 | 0.83 | 63.7 | 73.2 | 31.1 | 94.3 |
GS2167 | 396.3 | 428 | 2.15 | 1.01 | 71.7 | 69.2 | 49.5 | 96.3 |
overall predicted grade | 1.43 | |||||||
overall calc grade/recovery from test work | 1.43 | 72 | 77 | 42 | 97 |
The drilling success at Golden Summit since 2020 has been truly remarkable. It has significantly increased the resource and enhanced the project's potential. These positive metallurgical results further solidify
Pit Constrained OXIDE Resource using
Cutoff Au g/t | Category | Tonnes | Au g/t | Au Ounces |
0.15 | Indicated | 52,030,000 | 0.39 | 657,000 |
0.15 | Inferred | 18,187,000 | 0.47 | 272,000 |
(approximately top 70 metres) |
Pit Constrained PRIMARY Resource using
Cutoff Au g/t | Category | Tonnes | Au g/t | Au Ounces |
0.45 | Indicated | 407,544,000 | 0.92 | 12,011,000 |
0.45 | Inferred | 282,303,000 | 0.85 | 7,736,000 |
Following the
- Comminution studies using half PQ core
- Flotation concentrate oxidation pre-treatment prior to CIL
Map Showing Location of Metallurgical Composite Holes and 2024 Drilling
https://freegoldventures.com/site/assets/files/6287/goldensummit_dolphin-cleary_resource_drilling_western_a.jpg
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Some statements in this news release contain forward-looking information, including, without limitation, statements as to planned expenditures and exploration programs, potential mineralization and resources, exploration results, the completion of an updated NI 43-101 technical report, and any other future plans. These statements address future events and conditions and, as such, involve known and unknown risks, uncertainties, and other factors which may cause the actual results, performance, or achievements to be materially different from any future results, performance, or achievements expressed or implied by the statements. Such factors include, without limitation, the completion of planned expenditures, the ability to complete exploration programs on schedule, and the success of exploration programs. See
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