Overview
| Stage | Production |
| Mine Type | Open Pit |
| Commodities |
|
| Mining Method |
|
| Production Start | ...  |
| Mine Life | 3 years (as of Jan 1, 2021) |
On 26 April 2022, subsidiaries of KGHM International Ltd., i.e. Franke Holdings Ltd. and Centenario Holdings Ltd., signed an agreement for the sale of 100% of the shares of the company Sociedad Contractual Minera Franke, being the owner of the Franke mine in Chile, to the company Minera Las Cenizas S.A. |
Source:
p. 25
On 26 April 2022, subsidiaries of KGHM International Ltd., i.e. Franke Holdings Ltd. and Centenario Holdings Ltd., signed an agreement for the sale of 100% of the shares of the company Sociedad Contractual Minera Franke, being the owner of the Franke mine in Chile, to the company Minera Las Cenizas S.A.
Contractors
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Summary:
The Franke area exhibits a shallowly dipping anticline fold striking N20-40°W. It is slightly steeper on the southwest flank (up to 20°) than on the northeast flank (5-15°). Bedding along the axis of the anticline is an almost horizontal crest zone about 100-200 m wide, as observed in the underground workings dug into this area. However, previous studies have suggested that this anticline also plunges to the NNW and SSE, defining a gently dipping structural dome.
Flanking the sub-horizontal crest zone of the anticline, several steeply dipping N25-35°W/70- 80°E faults are apparently one of the main mineralization controls for the emplacement of high grade copper in the Franke deposit. The other control is given by the segments of the N60-70°W structural trend.
The geometry of the ore zones in the Franke deposit is closely related with this particular structural arrangement: while the mineralization at the flanks of the anticline is typically formed by one or more ore horizons of limited thicknesses (1 to 5 m), the mineralization within and near the structural corridors located near the anticline crest, tends to be thicker and higher in grade, forming 10 to 30 m thick mineralized blocks separated by relatively thin barren horizons.
There appears to be a crude outward zonation of alteration centered roughly on the top of the Franke deposit but it is distorted by the several vein-stockwork zones that similarly exhibit more intensive alteration a ........
Summary:
(Text was translated from Spanish to English by Google Translate)
Franke mine extracts copper oxides from its China, South China, San Guillermo, Japan and Franke mines, all exploited by conventional, open-pit methods. The mining operation is carried out almost entirely with its own personnel and equipment.
Pit Design Parameters:
- Bench height - Quadruple benches, 20 m high total
- Interramp slope - 55.3º
- Batter angle - 70º
- Berm width - 6.5 m
- Haulage ramp width - 16 m
- Haulage ramp slope - 10%
- Minimum pushback width - 40 m.
Source:
Summary:
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Production:
| Commodity | Units | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|
Copper
|
kt
| ...... | ...... | ...... | 20 | 20 | 18 |
All production numbers are expressed as cathode.
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Operational Metrics:
| Metrics | 2022 |
|
Annual production capacity
| ...... |
|
Annual processing capacity
| ...... |
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Reserves at October 31, 2014:
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Proven
|
8,400 kt
|
Copper
|
0.91 %
|
76,840 t
|
|
Probable
|
10,552 kt
|
Copper
|
0.82 %
|
86,670 t
|
|
Proven & Probable
|
18,953 kt
|
Copper
|
0.86 %
|
163,510 t
|
|
Measured
|
8,290 kt
|
Copper
|
0.95 %
|
79,164 t
|
|
Indicated
|
18,374 kt
|
Copper
|
0.76 %
|
139,778 t
|
|
Measured & Indicated
|
26,665 kt
|
Copper
|
0.82 %
|
218,942 t
|
|
Inferred
|
3,259 kt
|
Copper
|
0.72 %
|
23,314 t
|
Corporate Filings & Presentations:
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