Overview
| Stage | Preliminary Economic Assessment |
| Mine Type | Open Pit |
| Commodities |
- Copper
- Gold
- Silver
- Molybdenum
|
| Mining Method |
|
| Mine Life | 17 years (as of Jan 1, 2015) |
In the first quarter of 2022 Panoro commenced work to support the prefeasibility study for the Cotabambas Project. The work began with step-out and infill drilling programs which also included technical and environmental studies. The work programs will continue to the end of 2022 with additional drilling contemplated in 2023. Additionally in 2022, technical studies including an update to geologic modelling, geo-metallurgical modelling, metallurgical testing, geotechnical and hydrogeological studies have begun.
In addition to the pre-feasibility drilling program Panoro is scoping the engineering, environmental and social studies to support the pre-feasibility work program. Metallurgical, tailings trade off, and open pit geotechnical studies planned for completion in 2022 in support of the pre-feasibility study planned for completion in 2023. |
Source:
p. 55
The Cotabambas Property mining and exploration concessions are 100% held by Panoro through its indirectly wholly-owned Peruvian subsidiary Panoro Apurimac S.A.
Contractors
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Deposit Type
- Porphyry
- Vein / narrow vein
Summary:
The Ccalla and Azulccacca zones of the Cotabambas deposit are considered to be examples of porphyry copper deposits. The two host porphyries cover an area about 2.5 km long and 1.5 km wide.
Mineralization occurs in hypogene, supergene enrichment and oxide zones. A welldeveloped leached cap hosts the oxide mineralization. Sulphide mineralization occurs below the base of the leached cap. This zonation is considered to be typical of porphyrystyle copper and porphyry-style copper–gold deposits.
Hypogene mineralization in the Project area has been intersected at depths from approximately 20 m from surface to depths of over 500 m from surface.
Hypogene copper–gold–silver mineralization is best developed with pyrite mineralization in quartz–sericite-altered quartz monzonite porphyry dykes running parallel to the north north-east trending structural corridors at Ccalla and Azulccacca. Mineralization occurs as disseminated chalcopyrite and pyrite, pyrite-chalcopyrite stringers or veinlets and quartz chalcopyrite pyrite veinlets. Local patches of hypogene mineralization are developed in diorite, peripheral to the quartz monzonite porphyry, where the north–northeast-trending structural system passes within 10 to 20 m of the diorite–porphyry contact. Chalcopyrite mineralization intensity decreases and disseminated pyrite mineralization increases distal to the higher grade parts of the hypogene zone.
Sulphide mineralization consists of chalcop ........
Summary:
A PEA open pit mine plan is developed for the Cotabambas project.
The PEA mine plan is based on a subset of the Mineral Resources. No mining dilution was incorporated in the plan. The assumed mill feed throughput is 80,000 t/d (29.3 Mt/a)
Two open pits will be mined, in seven pit phases, utilizing 12 m high benches. Cotabambas has a projected life of mine of 18 years, considering one year of prestripping and 17 years of feed to the plant.
A WRF with a maximum capacity of 369 Mm3 will be located in Guaclle Creek. Waste will be transported by truck
The operating fleet will consist of a conventional diesel fleet. Equipment requirements were estimated using first principle calculations
Haulage requirements are based on measured annual haulage profiles from the two pits. The average haulage distance for mineralized material to the primary crusher is 3.3 km. The average haulage distance for waste by trucks is between 3 and 4 km.
The mine plan assume that Cotabambas will operate seven days a week, twentyfour hours per day with four crews rotating to fill the mine roster of 12 hours per shift.
Mine infrastructure includes shops, warehouse, washing and welding bays, fuel stations, explosives magazine and administrative offices.
Main consumables for mine operations include diesel fuel, ANFO, emulsion and tires.
Source:
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Flow Sheet:
Summary:
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Projected Production:
| Commodity | Product | Units | Avg. Annual | LOM |
|
Copper
|
Payable metal
|
M lbs
| | 2,638 |
|
Gold
|
Payable metal
|
M oz
| | ...... |
|
Silver
|
Payable metal
|
M oz
| | ...... |
|
Copper
|
Concentrate
|
kt
| 270 | |
Operational Metrics:
| Metrics | |
|
Daily ore mining rate
| 80,000 t * |
|
Daily processing capacity
| 80,000 t * |
|
Annual ore mining rate
| 29.3 Mt * |
|
Annual mining capacity
| 116 Mt * |
|
Plant annual capacity
| 29.2 Mt * |
|
Stripping / waste ratio
| 1.25 * |
|
Waste tonnes, LOM
| 604.19 Mt * |
|
Ore tonnes mined, LOM
| 483.08 Mt * |
|
Total tonnes mined, LOM
| 1,161 Mt * |
|
Tonnes processed, LOM
| 483.07 Mt * |
* According to 2015 study.
Reserves at December 31, 2015:
Cut-off Grade 0.2% CuEq.
| Category | Tonnage | Commodity | Grade |
|
Indicated
|
117.1 Mt
|
Copper
|
0.42 %
|
|
Indicated
|
117.1 Mt
|
Gold
|
0.23 g/t
|
|
Indicated
|
117.1 Mt
|
Silver
|
2.74 g/t
|
|
Indicated
|
117.1 Mt
|
Molybdenum
|
0.0013 %
|
|
Inferred
|
603.5 Mt
|
Copper
|
0.31 %
|
|
Inferred
|
603.5 Mt
|
Gold
|
0.18 g/t
|
|
Inferred
|
603.5 Mt
|
Silver
|
2.33 g/t
|
|
Inferred
|
603.5 Mt
|
Molybdenum
|
0.0019 %
|
Corporate Filings & Presentations:
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