Overview
| Stage | Permitting |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Mine Life | 10 years (as of Jan 1, 2016) |
The Coffee Mine Project is a proposed open-pit and heap leach gold development project located in west-central Yukon.
Newmont continues to work cooperatively with the Yukon Government, Canada and First Nations to progress development of the Coffee Mine Project.
On March 17, 2022, the Governments of Yukon and Canada, after consultation with Yukon First Nations, jointly accepted the recommendation the Coffee Gold Project be allowed to proceed by the Yukon Environmental Socioeconomic Assessment Board’s (YESAB). |
Source:
p. 8
Kaminak Gold Corp.'s key asset is the 100%-owned Coffee gold project.
On July 19, 2016, Goldcorp Inc. Kaminak Gold Corp. was acquired by Goldcorp Inc.
On April 18, 2019, Newmont completed the business acquisition of Goldcorp, Inc.
Contractors
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Deposit Type
- Orogenic
- Breccia pipe / Stockwork
- Vein / narrow vein
- Hydrothermal
Summary:
Coffee is interpreted to represent a shallow-level (epizonal) structurally controlled orogenic gold deposit (Buitenhuis et al., 2015; Allan et al., 2013). Mineralization textures are described below for the four deposits which comprise the Coffee resources and reserves, namely Supremo, Latte, Double Double, and Kona.
Supremo.
Narrow gold-bearing brittle fault structures with gold hosted in intense fracture zones, immature clast supported breccia and in zones of most intense deformation matrixsupported breccia. Mineralization commonly on the margin of and within dacite dykes which intruded along the fracture zones premineralization. Gold mineralization and accompanying quartz-sericite-pyrite alteration associated with later reactivation of structures. Complete oxidation up to 250m below surface.
Latte.
Gold is hosted in zones of brecciation and strong fracturing as well as areas with pervasive sericite alteration and strongly disseminated sulphides. Some high-grade zones associated with quartz vein breccias. Dolomite-illite/sericite-arsenian pyrite sulphidizes foliaform biotite laths. Potential remobilization of gold to other structures. Complete oxidation up to 75m below surface.
Double Double.
Narrow gold-bearing brittle structures hosted in matrix-supported breccia including dacite porphyry fragment breccia. Anastomosing quartz vein networks and microbreccia associated with high-grade. Local intense silicification and stron ........
Summary:
The Coffee Gold Project comprises the Latte, Double Double, Supremo and Kona pits which are planned to be extracted by open pit shovel and truck mining methods.
Mining of the deposit is planned to produce a total of 46.4 Mt of heap leach feed and 265 Mt of waste (at a 5.7:1 overall strip ratio) over a nine and a half year mine production life (including one year of preproduction). The current life of mine (LOM) plan focuses on achieving consistent heap leach production rates, and mining of higher value material early in the production schedule, as well as balancing grade and strip ratios.
Given that the crusher and heap leach facility will only be operated between April and December of each year, a ROM stockpile will be used when necessary for stockpiling of ore from the open pit.
The open pit mining is envisioned to be undertaken by Kaminak, the project owner.
Mining will begin at the Coffee Gold Project in Year -1 at Latte and Double Double pits to provide waste rock for construction and enable the stockpiling of high-grade ore prior to the start of leach processing. Leachate processing will commence in Q3 Year -1 and ramps up rapidly in Q4 of Year -1. Open pit mining will then transition sequentially to the Kona and Supremo pits. Open pit mining and loading of the heap leach facility will be completed in the first half of Year 9.
Open pit mining operations will use a fleet comprising 16 m3 shovels, 12 m3 front-end loa ........
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Flow Sheet:
Summary:
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Projected Production:
| Commodity | Units | Avg. Annual | LOM |
|
Gold
|
koz
| 202 | 1,858 |
Operational Metrics:
| Metrics | |
|
Stripping / waste ratio
| 5.72 * |
|
Waste tonnes, LOM
| 265,361 kt * |
|
Ore tonnes mined, LOM
| 46,356 kt * |
|
Total tonnes mined, LOM
| 311,717 kt * |
|
Tonnes milled, LOM
| 46,356 kt * |
* According to 2016 study.
Reserves at December 31, 2022:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Indicated
|
53,900 kt
|
Gold
|
1.23 g/t
|
2,140 koz
|
|
Measured & Indicated
|
53,900 kt
|
Gold
|
1.23 g/t
|
2,140 koz
|
|
Inferred
|
7,200 kt
|
Gold
|
1.01 g/t
|
230 koz
|
Pipelines and Water Supply
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