Overview
| Stage | Permitting |
| Mine Type | Underground |
| Commodities |
|
| Mining Method |
- Drift & Fill
- Cemented backfill
|
| Mine Life | 8 years (as of Jan 1, 2021) |
The gold deposit defined at McCoy-Cove represents one of the highest-grade deposits with resources in excess of 1 million ounces of gold in North America. Construction of the exploration decline continued on plan and has been advanced approximately 1,300 feet. Additional work on metallurgical and hydrology studies, engineering of de-watering and mining options, and reclamation activities associated with the inactive tailings storage facility is also being advanced. |
| Latest News | i-80 Gold Announces High-Grade Results from Underground Drilling at Cove June 7, 2023 |
Source:
p. 9,31
The McCoy-Cove Project is an advanced-stage development project located along the Battle Mountain-Eureka trend in Nevada that is 100% indirectly owned by the Corporation. The Corporation's subsidiary, Premier USA, acquired the McCoy-Cove Project from Newmont pursuant to the terms of a definitive purchase agreement dated July 31, 2014, which included the acquisition of 1,096 unpatented claims and nine patented fee claims. The Corporation's interest in the McCoy-Cove Project is held through Premier USA and Au- Reka LLC.
Contractors
- Subscription is required.
Deposit Type
- Skarn
- Vein / narrow vein
- Carlin-type
- Carbonate replacement
Summary:
Geology and Mineral Resource The Cove Project contains four structurally controlled mineralized zones within the Triassic sedimentary package. The Helen and Gap zones are Carlin Style disseminated refractory gold deposits. The Cove South Deep (CSD) gold and silver mineralization is associated with disseminated sulfides and is characterized by Ag:Au ratios of 50:1 to over 100:1. The 2201 zone is comprised of disseminated sulfides within sheeted stockwork veins with high concentrations of lead and zinc.
The Cove-Helen deposit consist of two mineralization styles, Carlin-style and polymetallic sheeted veins. The Carlin-style mineralization within the Helen, Gap, and CSD zones comprises approximately 85% of the existing resource with high gold and silver grades occurring as both stratabound and structurally controlled mineralization at the intersection of the Cove anticline and favorable lithologic beds, structures, intrusive dikes and sills.
The polymetallic 2201 zone is a separate deposit from the shallower Carlin-style mineralization and is believed to be a structurally controlled sheeted vein system. Veining is oriented northwest, with vein geometry being controlled by a deeper northwest striking reverse fault. Due to its depth, the 2201 zone has seen limited drilling since its original discovery in late 2013, however, additional infill and step-out drilling in the future will help to better define deposit potential and mineralization controls.
Mining Methods
- Drift & Fill
- Cemented backfill
Summary:
Due to the mostly flat geometry of the ore lenses, all planned production mining will be completed using drift and fill mining. The final choice of mining method will depend upon the geometry of the stope block, proximity to main access ramps, ventilation and escape routes, the relative strength or weakness of the mineralized material and adjacent wall rock, and finally the value or grade of the mineralized material. The choice of mining method will not be finalized until after the stope delineation and definition drilling is completed.
ACCESS DEVELOPMENT
Underground access to the mining areas will begin with a portal on the North side of the existing pit and ramp down. Initial work will consist of 4,557 feet of decline from the portal down to approximately the 4600-foot elevation and 889 feet of drill laterals. The drill laterals are located directly above the Helen and Gap deposits.
Primary access drifts are designed 15 feet wide and 17.5 feet high to permit 30-ton haulage trucks and provide a large cross section for ventilation. Drift gradients will vary from – 15% to + 15% to reach the desired elevation. Secondary drifts, spiral ramps and vertical raises will connect the haulage drifts to provide a pathway for ventilation to the surface and serve as a secondary escape way.
GROUND SUOOPRT
It is expected that Swellex rock bolts along with welded wire mesh will be able to control all conditions encountered during decline development ........
Source:
Summary:
- subscription is required.
Projected Production:
| Commodity | Units | Avg. Annual | LOM |
|
Gold
|
koz
| 102 | 743 |
All production numbers are expressed as metal in doré.
Operational Metrics:
| Metrics | |
|
Daily mining rate
| ...... |
|
Daily ore mining rate
| ...... |
|
Ore tonnes mined, LOM
| ...... |
|
Total tonnes mined, LOM
| ...... |
|
Mining scale, tpd
| ...... |
* According to 2021 study.
- Subscription is required.
Reserves at January 1, 2021:
Mineral Resources have been estimated using a gold equivalent cutoff grade of 0.141 opt.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Indicated
|
1,110 k tons
|
Gold
|
0.316 oz/ton
|
351 koz
|
|
Indicated
|
1,110 k tons
|
Silver
|
0.85 oz/ton
|
943 koz
|
|
Inferred
|
4,262 k tons
|
Gold
|
0.317 oz/ton
|
1,353 koz
|
|
Inferred
|
4,262 k tons
|
Silver
|
0.602 oz/ton
|
2,565 koz
|
Corporate Filings & Presentations:
- Subscription is required.
News:
- Subscription is required.