Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
- Copper
- Molybdenum
- Silver
- Gold
|
| Mining Method |
|
| Production Start | ...  |
| Mine Life | 2107 |
Collahuasi has consistently ranked within the top 4 copper mines by production globally over the past decade. |
Source:
The mine is operated by a joint venture company, Compania Minera Dona Ines de Collahuasi SCM. The joint venture partners are Glencore (44 per cent.), Anglo American (44 per cent.), and Japan Collahuasi Resources (JCR) is a consortium of Japanese companies led by Mitsui & Co., Ltd. (12 per cent.).
Contractors
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Deposit Type
- Porphyry
- Vein / narrow vein
Summary:
Collahuasi comprises two large copper-molybdenum porphyry-type deposits (Rosario and Ujina) with several peripheral vein deposits (Rosario Oeste and Rosario Sur). The Rosario deposit is the focus of current open cut mining operations.
Mineralisation at Rosario and Ujina is mainly associated with veins, especially in Rosario. These major Cu-Ag-As veins include the NNE trending Montezuma and La Grande vein systems and the NW-trending Rosario and Poderosa vein systems (Masterman, et al,. 2005). The two deposits show typical profile of a secondary enrichment process: a leach cap, a copper oxides zone, a secondary enrichment blanket and a primary sulphide core. To the west of Rosario is located Capella, which is an exotic copper deposit with copper oxides associated to gravels, probably derived from the Rosario porphyry.
The Rosario deposit is characterized by a dome-shaped zone of copper mineralization centred on the Rosario and Collahuasi porphyries. The centre of the mineralised zone contains bornite, chalcopyrite, and primary chalcocite and generally lacks pyrite. Copper mineralization occurs as both disseminations and fracture- controlled veinlets. The deposit contains a thin, erratically developed secondary enrichment blanket underlain by a relatively high-grade primary chalcopyrite zone. The lack of a well-developed secondary enrichment blanket is due to both presence of structures and level of oxidization. In addition, the secondary zone is offset a ........
Summary:
The mining method applied since the beginning of the operation, which will not change for the LOM, it is conventional truck and shovel open pit mining.
Source:
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Flow Sheet:
Summary:
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Production:
| Commodity | Product | Units | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|
Copper
|
Metal in concentrate
|
t
| ...... | ...... | ...... | ...... | 559,100 | 523,900 | 501,800 |
|
Silver
|
Metal in concentrate
|
koz
| ...... | ...... | ...... | ...... | ...... | ...... | ...... |
|
Gold
|
Metal in concentrate
|
koz
| ...... | ...... | ...... | ...... | | | |
|
Copper
|
Cathode
|
t
| | | | | | 100 | 4,800 |
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Operational Metrics:
| Metrics | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|
Ore tonnes mined
| ...... | ...... | 71,959,200 t | 87,253,200 t | 51,886,400 t | 64,733,500 t |
|
Tonnes processed
| ...... | ...... | 55,831,600 t | 54,133,100 t | 49,470,500 t | 49,886,800 t |
|
Total tonnes mined
| ...... | ...... | | | | 264 Mt |
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Reserves at December 31, 2022:
Ore Reserves and Mineral Resources cut-off grades – 0.3%TCu
| Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
|
Proven & Probable
|
Stockpiles
|
360.7 Mt
|
Copper
|
0.57 %
|
2,056 kt
|
|
Proven & Probable
|
Sulphide
|
2,633 Mt
|
Copper
|
0.97 %
|
25,444 kt
|
|
Proven & Probable
|
Low-grade sulphide
|
1,167 Mt
|
Copper
|
0.46 %
|
5,406 kt
|
|
Proven & Probable
|
Stockpiles
|
360.7 Mt
|
Molybdenum
|
0.013 %
|
47 kt
|
|
Proven & Probable
|
Sulphide
|
2,633 Mt
|
Molybdenum
|
0.028 %
|
725 kt
|
|
Proven & Probable
|
Low-grade sulphide
|
1,167 Mt
|
Molybdenum
|
0.01 %
|
122 kt
|
|
Measured & Indicated
|
Sulphide
|
931.7 Mt
|
Copper
|
0.91 %
|
8,517 kt
|
|
Measured & Indicated
|
Oxide & Mixed
|
71.7 Mt
|
Copper
|
0.71 %
|
506 kt
|
|
Measured & Indicated
|
Low-grade sulphide
|
360.4 Mt
|
Copper
|
0.47 %
|
1,692 kt
|
|
Measured & Indicated
|
Sulphide
|
931.7 Mt
|
Molybdenum
|
0.032 %
|
303 kt
|
|
Measured & Indicated
|
Low-grade sulphide
|
360.4 Mt
|
Molybdenum
|
0.016 %
|
58 kt
|
|
Inferred
|
Sulphide
|
2,973 Mt
|
Copper
|
0.88 %
|
26,286 kt
|
|
Inferred
|
Oxide & Mixed
|
51.3 Mt
|
Copper
|
0.58 %
|
298 kt
|
|
Inferred
|
Low-grade sulphide
|
1,822 Mt
|
Copper
|
0.46 %
|
8,392 kt
|
|
Inferred
|
Sulphide
|
2,973 Mt
|
Molybdenum
|
0.021 %
|
618 kt
|
|
Inferred
|
Low-grade sulphide
|
1,822 Mt
|
Molybdenum
|
0.01 %
|
184 kt
|
Pipelines and Water Supply
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Corporate Filings & Presentations:
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