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Canada
LaRonde Zone 5 Mine

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 Location:
41 km E from Rouyn-Noranda, Quebec, Canada

  Regional Office:
145 King Street East, Suite 400
Toronto
Ontario, Canada
M5C 2Y7
Phone  ...  Subscription required
Fax+1-(416)-367-4681
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Silver
Mining Method
  • Transverse open stoping
  • Longitudinal retreat
  • Paste backfill
Processing
  • Gravity separation
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)
Mine Life2026


Owners & OPERATOR

 
CompanyInterestOwnership
Agnico Eagle Mines Ltd. (operator) 100 % Direct

Deposit Type

  • VMS


Summary:

The LZ5 deposit is located in the southern portion of the Archean-age Abitibi volcanic belt, within the Bousquet Formation of the Blake River Group of volcanic rocks. The deposit occurs within the east- west-trending Doyon-Bousquet-LaRonde mining camp, which includes the Mouska, Doyon, Bousquet 1, Bousquet 2 and LaRonde gold deposits. The most important regional structure is the Cadillac-Larder Lake fault zone, located approximately 2 km south of the Bousquet property.

The LaRonde deposit is a gold-rich volcanogenic massive sulphide deposit. LaRonde lenses were formed mainly by sulphide precipitation from hydrothermal fluids on the seafloor and by replacement below lenses. The stacking of the LaRonde lenses is the result of successive volcanic events, intercalated by cycles of hydrothermal activity associated with reactivation of synvolcanic faults.

The LaRonde Zone 5 horizon consists of a four-to- 30 metre thick horizon of disseminated to stringer sulphide mineralization containing 5% to 20% pyrite and traces of chalcopyrite with rare millimetre-wide grains of visible gold. The LaRonde Zone 5 horizon has a very large geological footprint and has been estimated to contain a mass of more than 26 million tonnes. The LaRonde Zone 5 horizon can be followed over 900 metres of east- west strike length over the Bousquet property and another 400 metres on the Ellison property for a total strike length of 1,300 metres. LaRonde Zone 5 has been traced vertically for almost 1,000 metres showing a steep dip to the southwest. In an enlarged area of LaRonde Zone 5, there is gold enrichment near the margins of the economic envelope. LaRonde Zone 5 includes two high grade portions named Zone 5 Footwall and Zone 5 Hanging wall.


Mining Methods

  • Transverse open stoping
  • Longitudinal retreat
  • Paste backfill


Summary:

LZ5 is mined from underground ramp access. The mining methods are longitudinal retreat with paste backfill, and transverse open stoping with paste or unconsolidated backfill. All of the ore is trucked to the surface before being trucked to the LZ5 ore processing plant. In its first year of operation, the mine achieved its designed production rate of 1,975 tonnes/day. Integration and pilot testing of automated mining equipment (two trucks and one scoop tram) will continue in 2019.


Crushing and Grinding


Processing

  • Gravity separation
  • Agitated tank (VAT) leaching
  • Carbon in leach (CIL)
  • Solvent Extraction & Electrowinning
  • Cyanide (reagent)

Flow Sheet: Subscription required

Summary:

The LaRonde Zone 5 mine processing plant (previously used to process ore from Lapa) consists of a two- stage grinding circuit to reduce the granularity of the ore. The residual pulp is leached in a conventional CIL circuit to dissolve the balance of the precious metal. A carbon strip circuit recovers the gold from the carbon which is recycled to the leach circuit.

Recoveries & Grades:

CommodityParameter2018
Gold Recovery Rate, %  ......  Subscription required
Gold Head Grade, g/t 2.76
Subscription required - Subscription is required.

Production:

CommodityUnits20192018
Gold oz  ......  Subscription required  ......  Subscription required
Silver koz  ......  Subscription required  ......  Subscription required
All production numbers are expressed as payable metal.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20192018
Tonnes milled  ......  Subscription required  ......  Subscription required
Daily ore mining rate  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven 4,053 kt Gold 2.03 g/t 264 koz
Probable 5,377 kt Gold 2.41 g/t 417 koz
Proven & Probable 9,430 kt Gold 2.25 g/t 681 koz
Indicated 6,796 kt Gold 2.34 g/t 510 koz
Inferred 2,985 kt Gold 5.19 g/t 498 koz

Commodity Production Costs:

CommodityUnits20192018
Credits (by-product) Gold USD  ......  Subscription required  ......  Subscription required
Cash costs Gold USD  ......  Subscription required  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required  ......  Subscription required
Total cash costs Gold USD  ......  Subscription required†  ......  Subscription required†
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2018
Total operating costs ($/t milled) CAD 80

Financials:

Units20192018
Capital expenditures M USD  ......  Subscription required  ......  Subscription required
Sustaining costs M USD  ......  Subscription required
Revenue M USD  ......  Subscription required
Gross profit M USD  ......  Subscription required
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required May 11, 2019
....................... Subscription required ....................... Subscription required Subscription required May 11, 2019
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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