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Australia
Cadia Hill Mine (Cadia Valley Operation)

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 Location:
22 km SW from Orange, New South Wales, Australia

  Address:
1460 Cadia Rd, Cadia
South Orange
New South Wales, Australia
2800
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Fax+61-02-6366-4333
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeOpen Pit
Commodities
  • Gold
  • Copper
Mining Method
  • Truck & Shovel / Loader
Processing
  • Gravity separation
  • Flotation
On 23 April 2018 Newcrest announced that the Cadia Hill open pit had been approved to use the first 200 metres as tailings disposal for Cadia East and that it would be likely, subject to further study, that the remnant Mineral Resource and Ore Reserves of Cadia Hill open pit would ultimately be forgone.


Owners

 
CompanyInterestOwnershipInvestor's Info
Newcrest Mining Ltd. 100 % Indirect

Deposit Type

  • Porphyry
  • Vein / narrow vein


Summary:

The Cadia Hill deposit is a sheeted quartz vein system located almost entirely within the quartz monzonite porphyry phase of the Cadia Intrusive Suite.

The predominant alteration is propylitic (chlorite-epidote) with narrow domains of structurally-controlled phyllic (sericitic) alteration. Mineralization is in part related to chlorite matrix hydrothermal breccias that cut the deposit. Unusually, compared to the other mineralized systems in the area, potassic alteration is confined to K-feldspar rich vein haloes and to some quartz veins.

The vein system forms a broad, 300 m wide tabular envelope that dips 60° to the southwest. Chalcopyrite with lesser bornite, pyrite and gold occur in the quartz veins and as disseminations throughout the intrusive wallrock.


Mining Methods

  • Truck & Shovel / Loader


Summary:

A feasibility study on mining the Cadia Hill deposit was completed in 1996 with project funding approved in September that year. The feasibility study open pit design, which included a number of planned cutbacks.


Crushing and Grinding


Processing

  • Gravity separation
  • Flotation

Source: Subscription required

Summary:

The process plant comprises a crushing, grinding and flotation circuit to produce a gold rich copper concentrate. A gravity circuit recovers a proportion of the gold which is smelted on site to produce gold doré.


Combined production numbers are reported under Cadia Valley Operation


Reserves at December 31, 2018:

CategoryOreTypeTonnage CommodityGradeContained Metal
Total Resource Stockpiles 33 Mt Gold 0.3 g/t 0.31 M oz
Total Resource Stockpiles 33 Mt Copper 0.13 % 0.042 Mt


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 25, 2021
....................... Subscription required ....................... Subscription required Subscription required Jan 25, 2021
....................... Subscription required ....................... Subscription required Subscription required Jan 25, 2021
....................... Subscription required ....................... Subscription required Subscription required Jan 25, 2021
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2018
................................... Subscription required 2018
Year-end Mineral Reserves 2016
Fact Sheet 2015
Technical Report 2011
Subscription required - Subscription is required.

Aerial view:

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