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Chile
Franke Mine

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 Location:
51 km NW from El Salvador, Chile

  Address:
Av.Apoquindo 3885 - Piso 14 Las Condes
Santiago
Chile
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life3 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.


Owners

Source: p. 25
CompanyInterestOwnership
Sociedad Contractual Minera Franke (operator) 100 % Direct
Grupo Minera Las Cenizas S.A 100 % Indirect
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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Deposit Type

  • Hydrothermal
  • IOCG


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 ........


Mining Methods

  • Truck & Shovel / Loader


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.


Crushing and Grinding


Processing

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Summary:

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Production:

CommodityUnits202120202019201820172016
Copper kt  ......  Subscription required  ......  Subscription required  ......  Subscription required202018
All production numbers are expressed as cathode.
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Operational Metrics:

Metrics2022
Annual production capacity  ......  Subscription required
Annual processing capacity  ......  Subscription required
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Reserves at October 31, 2014:

CategoryTonnage CommodityGradeContained 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



Heavy Mobile Equipment as of April 15, 2020:
HME TypeModelQuantityLeased or
Contractor
Drill ....................... Subscription required ....................... Subscription required Leased
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 11, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 11, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 11, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 11, 2023
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Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Financial Review 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Corporate Presentation 2015
Annual Report 2014
Year-end Mineral Reserves 2014
Technical Report 2008
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