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Chile
Minera Florida Mine

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 Location:
30 km NW from Rancagua, Chile

  Address:
Villa San Jeronimo de Alhué
Santiago
Chile
Phone  ...  Subscription required
Fax+(56)-2-924-2401
WebsiteWeb
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  • Overview
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  • Geology
  • Mining
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  • Production
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  • Costs & Financials
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Silver
  • Zinc
Mining Method
  • Sub-level open stoping (SLOS)
  • Longitudinal retreat
  • Backfill
Production Start...
Mine Life6 years (as of Jan 1, 2020)


Owners

Source: p. 90
CompanyInterestOwnership
Yamana Gold Inc. 100 % Indirect
Minera Florida Ltda. (operator) 100 % Direct
Yamana holds a 100% indirect interest in the property through its wholly-owned subsidiary, Minera Florida Ltda.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Hydrothermal


Summary:

The area of the Minera Florida Mine is underlain by upper cretaceous volcanic and intrusive rocks. The volcanic rocks comprise porphyritic andesite, brecciated andesite, lithic and crystal tuff, and brecciated tuff. The bulk of these rocks are also affected by a sequence of hydrothermal alteration. The intrusive rocks comprise mainly granodiorites and monzodiorites.

Gold mineralization in the Minera Florida Mine area occurs as native gold and electrum associated with sulphide minerals, such as pyrite, chalcopyrite, sphalerite and galena, as well as magnetite. Mineralization is commonly associated with hydrothermal alteration including quartz, adularia, epidote, chlorite, and actinolite. Quartz occurs in four types; as grey siliceous zones, green quartz, translucent quartz, and white quartz. Some veins exhibit metal zoning, with a zinc-rich silver-rich zone in the upper part of the vein, a goldrich zone in the central part, and a zinc-rich zone in the lower part of the vein.

In general, mineralized structures include an inner quartz vein (core) consisting of material exhibiting quartz flooding or massive quartz, surrounded by stockwork of quartz veinlets and/or hydrothermal breccia, both of which are mineralized. Gold mineralization in the Minera Florida Mine area has been identified in four types of rocks, in places adjacent to each other, as follows: (1) silicified crystal tuff; (2) lithic to crystal tuff; (3) brecciated tuff; and (4) porphyritic ........


Mining Methods

  • Sub-level open stoping (SLOS)
  • Longitudinal retreat
  • Backfill


Summary:

Minera Florida is an underground gold mine located south of Santiago in central Chile. The underground workings are developed by adits driven from surface and is accessed at several elevations via multiple portals. An internal ramp system provides access to the stopes. Sublevels are driven in the veins and mining sequence advances from the top down, with pillars left at regular intervals. Underground mining operations are mechanized, utilizing: articulated haul trucks; electronic hydraulic development and production jumbos; load-haul dumpers; and a number of ground support and service equipment. Ore is hauled using 25-tonne trucks from the mine to a transfer point and 40-tonne trucks haul the ore from the transfer point to the process plant. Waste is transported by 25-tonne trucks. The primary mining method is sublevel open stoping. Thickened (paste) tailings from the processing facility are deposited in a TSF that consists of a downstream compacted fill embankment constructed in 2 phases. The embankment has a maximum height of 16 m with a high density polyethylene liner on its upstream face. The Minera Florida operation consists of several underground mines that are accessed via six adits. Mining at Minera Florida is conducted using various underground variations on SLS, either traditional SLS or longitudinal retreat. The different mining zones are accessed via ramps that provide flexibility and access to the ore at different elevations. Traditional SLS is used for veins ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits2022202120202019201820172016
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required8290104
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required715,288 t792,706 t801,250 t862,132 t
Tonnes processed  ......  Subscription required  ......  Subscription required745,671 t824,669 t1,033,295 t1,662,161 t
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Reserves at December 31, 2021:
Mineral Reserves: Underground cut-off at $92.07/t.
Mineral Resources: Underground mineral resources are estimated at a cut-off value of $69.05/t, corrseponding to 75% of the cut-off used to estimate mineral reserves, for the Las Pataguas, PVS, and Cucaracha zones which are constrained to underground mining shapes. The remaining zones are reported unconstrained at a NSR cut-off value of $92.07/t.

CategoryTonnage CommodityGradeContained Metal
Proven 662 kt Gold 3.08 g/t 65 koz
Proven 662 kt Silver 20.2 g/t 430 koz
Proven 662 kt Zinc 1.44 % 21 M lbs
Probable 4,153 kt Gold 2.73 g/t 364 koz
Probable 4,153 kt Silver 19.3 g/t 2,582 koz
Probable 4,153 kt Zinc 0.83 % 76 M lbs
Proven & Probable 4,815 kt Gold 2.78 g/t 430 koz
Proven & Probable 4,815 kt Silver 19.5 g/t 3,011 koz
Proven & Probable 4,815 kt Zinc 0.91 % 97 M lbs
Measured 1,425 kt Gold 5.24 g/t 240 koz
Measured 1,425 kt Silver 34 g/t 1,557 koz
Measured 1,425 kt Zinc 1.9 % 60 M lbs
Indicated 6,108 kt Gold 4.15 g/t 816 koz
Indicated 6,108 kt Silver 21.8 g/t 4,287 koz
Indicated 6,108 kt Zinc 1.38 % 185 M lbs
Measured & Indicated 7,533 kt Gold 4.36 g/t 1,056 koz
Measured & Indicated 7,533 kt Silver 24.1 g/t 5,844 koz
Measured & Indicated 7,533 kt Zinc 1.48 % 245 M lbs
Inferred 4,167 kt Gold 4.91 g/t 658 koz
Inferred 4,167 kt Silver 23.4 g/t 3,138 koz
Inferred 4,167 kt Zinc 1.2 % 111 M lbs

Commodity Production Costs:

CommodityUnits2022202120202019201820172016
Cash costs (sold) Gold Equivalent USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required  ......  Subscription required 917 / oz  
Cash costs Gold USD 916 / oz   812 / oz   735 / oz  
Cash costs Silver USD 11 / oz   9.9 / oz  
Total cash costs (sold) Gold Equivalent USD  ......  Subscription required 1,398 / oz  
Total cash costs (sold) Silver USD 13.7 / oz   13.8 / oz  
Total cash costs (sold) Gold USD 1,248 / oz   1,046 / oz  
All-in sustaining costs (sold) Gold Equivalent USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,327 / oz  
All-in sustaining costs (AISC) Gold USD 1,099 / oz   1,090 / oz   955 / oz  
All-in sustaining costs (AISC) Silver USD 14.9 / oz   12.7 / oz  
^ Guidance / Forecast.
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Financials:

Units2022202120202019201820172016
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 14.5   24.6   23.2  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 60.7   52.6   45.3  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 102.6   123.1   135.5  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -162.3   3.1   22.6  
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Heavy Mobile Equipment as of June 1, 2017:
HME TypeQuantity
Jumbo ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required
Truck (haul) ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 25, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Other 2018
Press Release 2018
Corporate Presentation 2017
Financial Review 2017
Management Discussion & Analysis 2017
Annual Report 2016
Annual Report 2015
Technical Report 2010
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