Canada

Taylor Mine

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Categories

Overview

Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Overhand Cut & Fill
  • Drift & Fill
  • Longhole stoping
  • Cemented (undefined) backfill
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ShapshotHolt Mine Complex consists of three past-producing mines: The Holt Mine and Mill and the Holloway Mine, and the Taylor Mine located approximately 68 km by road west of the Holt Mill.

The Holt mill, which is currently on care and maintenance, has a capacity of 3,000 tpd and a fully permitted tailings storage facility. The Company plans to evaluate the potential to integrate a number of satellite deposits with the existing infrastructure in the region.
Related AssetHolt Complex

Owners

SourceSource
CompanyInterestOwnership
Agnico Eagle Mines Ltd. 100 % Indirect
St Andrew Goldfields Ltd. is a wholly-owned subsidiary of Kirkland Lake Gold Ltd.

Kirkland Lake Gold Ltd owns the Holt Complex, which includes three wholly owned mines, the Taylor mine (“Taylor”), Holt mine (“Holt”) and Holloway mine (“Holloway”), as well as a central milling facility, the Holtmill.

February 8, 2022 – Agnico Eagle Mines Limited and Kirkland Lake Gold Ltd. are pleased to announce the successful completion of the previously announced merger of equals transaction (the “Merger”).

The combined company will continue as Agnico Eagle Mines Limited.

Deposit type

  • Vein / narrow vein
  • Porphyry

Summary:

Regional Geology
The Taylor Mine Complex is located along the Porcupine-Destor Fault Zone (PDF), a major structural feature associated with globally significant gold deposits lying within the Abitibi Greenstone Belt of northeastern Ontario and north-western Quebec.

Local and Property Geology
The Taylor Mine Complex is almost entirely covered by glacial overburden, ranging from 3 m to 60 m in thickness (generally 30 m to 40 m thick). Thus, interpretations of the property geology have been made principally from diamond drill hole information as well as the underground excavations in the shaft and ramp areas developed in the Shaft Deposit.

The Taylor Mine Complex is located along the PDF in its central portion, approximately 60 km east of the main gold producers in the vicinity of Timmins. The PDF in the area of the Taylor Mine Complex strikes roughly east-west, and dips to the south between 40° and 60°, with the majority of the property lying to the south of the projected trace of the PDF. The PDF is a complex structural zone and it is more accurately described as a zone of tens of metres width, along which are contained many individual zones of movement. In the Taylor property area, the footwall of the PDF is considered to be a thick series of relatively undeformed and unaltered metasedimentary rocks intersected to the footwall.

Mineralization
The Taylor Mineralization is in close proximity, within the hanging wall, to the PDF. Over a strike length of 2.3 kilometres there are three mineralization zones that have been identified. From east to west these are:

- The Shaft Deposit, with gold mineralization associated with felsic intrusive rocks.
- The West Porphyry Deposit (WPZ), a system of stacked lenses, with the gold mineralization associated with felsic intrusive and altered mafic-ultramafic rocks (Green Quartz Carbonate).
- The Shoot Deposit, with gold mineralization hosted by argillaceous metasedimentary rocks within a package of green quartz carbonate.

Gold commonly occurs as relatively coarse-sized free gold in quartz, but also occurs as fine particles, which may be intimately associated with sulphides (particularly pyrite and locally, arsenopyrite) both in quartz-carbonate veins or in surrounding altered host rocks.

DEPOSIT TYPE
The deposit types vary within the Taylor Mine Complex. The Shaft Deposit furthest east is identified as a Felsic intrusive related model, with a contemporaneous green carbonate association. Feldspar porphyritic intrusions are the host to high grade gold veins and high concentrations of disseminated sulphides (generally pyrite).

Within the West Porphyry Deposit, free gold is found within quartz dominant extension veins and veinlets, cross-cutting the foliation present within the chrome-mica and chloritic altered ultramafic rock. This unit can be up to 20 m thick as the true extent of the veins are not fully understood. Additionally, the main shear (interpreted to be the contact of the PDF between the mafic and sediment contact, is host to a quartz brecciated shear vein, which can be up to 2m thick. Altered mafic units consisting of high concentrations of disseminated sulphides are also host to gold mineralization.

Similar to the West Porphyry Deposit, gold mineralization in the Shoot Deposit is associated with the quartz carbonate veins within argillaceous sediments bounded by green carbonate.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

Milling equipment has not been reported.

Summary:

Surface ore storage is a total of 4,900 t in three silos, the Holt headframe bin (900 t) and two other separate storage bins (1,000 t and 3,000 t). The grinding circuit consists of a 5 m diameter by 6.1 m long Allis Chalmers ball mill, converted to a SAG mill, a 4 m diameter by 5.5 m long Allis Chalmers ball mill and a 3.6 m diameter by 4.9 m long tertiary ball mill, all operating in series and in closed circuit. The grinding circuit is controlled by an expert system and fuzzy logic.

Processing

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Production

CommodityUnits201820172016
Gold oz 58,63350,76442,639
All production numbers are expressed as metal in doré.

Operational metrics

Metrics201820172016
Tonnes milled 382,059 t292,003 t199,231 t
Daily mining rate 600 t

Production Costs

CommodityUnits20182017
Cash costs (sold) Gold USD 709 / oz   610 / oz  
All-in sustaining costs (sold) Gold USD 1,007 / oz   972 / oz  

Financials

Units20182017
Sustaining costs M USD 16.3   5.3  
Capital expenditures M USD 19.7   18.4  

Heavy Mobile Equipment

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Personnel

Mine Management

Source Source
Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 9, 2024
....................... Subscription required ....................... Subscription required Subscription required Apr 9, 2024
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required Apr 14, 2024

Aerial view:

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