Overview

Mine Type	Stockpile
Status	Archived Information
Commodities	Gold Copper
Mining Method	Truck & Shovel / Loader
Production Start	...
Snapshot	Operations at the Cadia Hill open pit ceased by 2014. In December 2019, Cadia Holdings received approval from the New South Wales Department of Planning and Environment (NSW DPE) to fully utilise the decommissioned Cadia Hill mine pit for deposition of dewatered tailings. Now the pit has been used for tailings storage as a mined-out Cadia Hill open pit TSF. Surface stockpiles from Cadia Hill containing approximately 0.3 Moz gold and 0.04 Mt of copper remain in Mineral Resource (As of 2023, it has remained unchanged since 2018).

Deposit type

• Vein / narrow vein
• Porphyry

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

- subscription is required.

Comminution

Crushers and Mills

Processing

- subscription is required.

Production

Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Apr 16, 2024
.......................	.......................		Apr 16, 2024