Overview
| Stage | Residual leach |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
On July 1, 2019, Long Canyon was contributed to Nevada Gold Mines, a joint venture between Barrick (61.5%) and Newmont (38.5%).
Mining temporarily ceased at Long Canyon in 2022. As such, the asset remains a residual leach operation in 2023 while Phase 2 is advanced through permitting with mining expected to recommence in 2026. |
Source:
p. 81
On March 10, 2019, Barrick entered into an implementation agreement with Newmont to create a joint venture, named Nevada Gold Mines.
On July 1, 2019, Long Canyon was contributed to Nevada Gold Mines, a joint venture between Barrick and Newmont.
Barrick is the operator of the joint venture and owns 61.5%, with Newmont owning the remaining 38.5% of the joint venture.
Contractors
- Subscription is required.
Deposit Type
- Sediment-hosted
- Carlin-type
Summary:
Long Canyon is a sediment-hosted disseminated gold deposit.
The gold mineralization at Long Canyon is best described as sediment-hosted, Carlin-type gold mineralization.
The mineralization identified at Long Canyon shares many of the characteristics of Carlin-type gold mineralization, including:
• Stratigraphic control on mineralization - mineralization is hosted primarily in limestone, particularly in silty, thin-bedded units;
• Structural control on mineralization - mineralization occurs in karstic cavities, collapse breccias, and anticlinal fold hinges;
• Geochemical association - elevated arsenic, mercury, antimony, and thallium accompany the gold mineralization, while silver and base-metal concentrations are low; and
• Alteration - mineralization is associated with decalcification, silicification/jasperoid, oxidized variants of pyrite and arsenical pyrite or arsenopyrite, and clay alteration.
The Long Canyon project also displays some characteristics that are unlike typical Carlin-type gold deposits. The prevalent association of hematite with gold mineralization at Long Canyon is not a common characteristic among all Carlin-type deposits, although this phenomenon is associated with weathered/oxidized portions of some of the deposits.
Summary:
The Long Canyon Mine includes an open pit with a series of benches from which oxide waste rock and ore is extracted. Mining is conducted using conventional open pit techniques and equipments, including blast-hole drills, hydraulic shovels, front-end loaders, and off-highway haul trucks. Other related mining equipment includes dozers, rubber-tired loaders, motor graders, water trucks and other mobile support equipment.
Mining temporarily ceased at Long Canyon in 2022. As such, the asset remains a residual leach operation in 2023 while Phase 2 is advanced through permitting with mining expected to recommence in 2026.
Flow Sheet:
Summary:
- subscription is required.
Reserves at December 31, 2022:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Measured
|
0.49 Mt
|
Gold
|
3.53 g/t
|
0.055 M oz
|
|
Indicated
|
9.9 Mt
|
Gold
|
4.05 g/t
|
1.28 M oz
|
|
Inferred
|
2.6 Mt
|
Gold
|
3.6 g/t
|
0.29 M oz
|
Corporate Filings & Presentations:
- Subscription is required.
- Subscription is required.