Mining Intelligence and News
Australia

Cadia East Mine

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Summary

Mine TypeUnderground
StatusActive
Commodities
  • Gold
  • Copper
  • Silver
  • Molybdenum
Mining Method
  • Panel caving
  • Block caving
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SnapshotCadia East mine is a part of the Cadia Valley Operations and is one of the largest gold and copper deposits in the world.

Cadia East operation consists of two main panel caves (PC): PC1, which is 1,200 meters deep, and PC2, which is 1,400 meters deep. A third panel cave, PC3 sits 275 meters directly below PC2. Panel Caves 1 and 2 are currently in production, with PC2-3 and PC1-2 in development and PC1-3 and PC3-1 providing additional potential.

In November 2022, the PC 1-2 feasibility study was approved for execution. PC1-2 is the next panel cave for execution at Cadia after PC2-3, and its development is expected to recover approximately 20 percent of Cadia’s ore reserves.

Cadia Continued Operations Project
The CCOP proposes to extend existing operations beyond 2031 through using the existing infrastructure and supporting services in combination with the continuation of underground mining within both the Cadia East Underground Mine and Ridgeway Underground Mine mining areas.

Owners

SourceSource
CompanyInterestOwnershipInvestor's Info
Newmont Corp. 100 % Indirect
Cadia Holdings Pty Ltd. (operator) 100 % Direct
Newmont Overseas Holdings Pty, a wholly owned indirect subsidiary of Newmont Corporation is the owner of Cadia Holdings Pty Limited (CHPL) which in turn is the owner and operator of Cadia.

Contractors

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Deposit type

  • Vein / narrow vein
  • Skarn
  • Porphyry

Summary:

The Cadia East deposit is considered to be examples of alkalic porphyry gold copper-style mineralization.

The Cadia East deposit occupies a mineralized zone 2.5 km in strike length. 600 m in width and over 1,900 m in vertical extent, It is located below and to the east of the Cadia Hill deposit.

Mineralization at Cadia East is divided into two broad overlapping zones; an upper, copper-rich disseminated zone and a deeper gold-rich zone associated with sheeted veins. The upper zone forms a relatively small cap to the overall mineralized envelope and has a core of disseminated chalcopyrite (and rare bornite), capped by chalcopyrite-pyrite mineralization (Fox et al., 2009).

The deeper zone is localized around a core of steeply-dipping, sheeted, quartz-calcite-bornite chalcopyrite-molybdenite veins, with the highest gold grades associated with the bornite-bearing veins. Copper and molybdenite form a mineralized blanket above and to the east of the higher grade gold envelope.

Au:Cu values are vertically zoned. The upper, disseminated zone of volcanic-hosted mineralization typically has low Au:Cu values (<1), whereas the envelopes of sheeted quartz calcite-sulfide veins have higher Au:Cu values (typically >2).

Reserves

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Mining Methods

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Required Heavy Mobile Equipment

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Comminution

Crushers and Mills

Milling equipment has not been reported.

Processing

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Commodity Production

Combined production numbers are reported under Cadia Valley Operation

Production Costs

Commodity production costs have not been reported.

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 13, 2025
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Workforce

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