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Mexico
Del Toro Mine

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 Location:
2 km E from Chalchihuites, Zacatecas, Mexico

  Regional Office:
Fanny Anitúa No. 2700, Colonia Los Ángeles
Durango
Durango, Mexico
34076
Phone  ...  Subscription required
Fax1-(618)-827-9070
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeUnderground
Commodities
  • Silver
  • Gold
  • Lead
  • Zinc
Mining Method
  • Cut & Fill
  • Drift & Fill
  • Longhole stoping
  • Shrinkage stoping
  • Cemented backfill
Production Start...
Mine Life6 years (as of Jan 1, 2016)
On January 21, 2020, the Company announced that the Del Toro operations were being temporarily suspended in 2020 in order to improve the Company’s cash flow and profit margins.

Project generation exploration continues, with an emphasis on brownfield and greenfield targets within the property mineral concessions.
Latest NewsFirst Majestic Produces 7.6M AgEq Oz in Q4 2022 and a Record 31.3M AgEq Oz in 2022...     January 19, 2023


Owners

Source: p. 226
CompanyInterestOwnership
First Majestic Silver Corp. 100 % Indirect
The Del Toro Silver Mine is wholly-owned and operated by First Majestic Del Toro, S.A. de C.V., a wholly-owned, indirect subsidiary of First Majestic Silver Corp.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Manto
  • Breccia pipe / Stockwork
  • Intrusion related
  • Hydrothermal


Summary:

Mineral deposits at Del Toro occur in veins, chimneys, breccias and mantos. The deposits are associated with a quartz monzonite–granodiorite intrusion and are hosted by Cretaceous limestone and shale that has been altered to marble, hornfels, skarnoid and skarn.

Because of their spatial relation with intrusions and metamorphic/motasomatic rocks, the deposits are proposed to be of the intrusion-related hydrothermal type. Potassic alteration observed at depth in the San Juan mine suggests high-temperature alteration at depth. Although fluid inclusion- microthermometry studies have not been carried out for the Del Toro deposits, the association intrusions and skarn suggests they could be of the mesothermal to epithermal type. The occurrence of distal quartz– calcite veins containing fluorite in the Dolores mine is suggestive of an epithermal environment.

Mineralization to the south at San Nicolas and San Juan seems to be more mesothermal whereas the mineralization to the north in Dolores seems to be epithermal. No attempt was made to fit Del Toro deposits to the settings of the well-studied porphyries or epithermal deposits described by Sillitoe or Hedenquist elsewhere, since the geologic features observed suggest that Del Toro sits in between these end-member environments.

Mineral deposits at Del Toro occur in veins, chimneys, breccias and mantos. It is interpreted that some of the mineralization is skarn-related mesothermal in style, similar ........


Mining Methods

  • Cut & Fill
  • Drift & Fill
  • Longhole stoping
  • Shrinkage stoping
  • Cemented backfill


Summary:

Current production is sourced from three different underground mining areas (San Juan, Perseverancia, and Dolores).

In mineralisation that exhibits fair to good geotechnical conditions, Del Toro uses cut-and fill (resue) and shrinkage stoping. Both methods have been successfully employed and recover the mineralisation with limited ore loss and dilution, albeit at a low productivity. A recent trade-off study indicated that where mineralisation was greater than 1.0 m in width, longhole stoping with fill could be more productive and cost effective than the current methods. Overhand drift-and fill is planned for the Cuerpo 3 deposit.

Stope designs assumed:

• Dolores: a minimum mining width of 1.5 m was designed for longhole stopes and 1.0 m for cutand-fill zones; additional waste was included to meet the minimum mining width for access, therefore waste was designed and scheduled on either side of the mineralisation. Sills mined for longhole stoping areas were proposed to be 3.0 m wide, 4.0 m high, and suitable for modern drilling equipment. Production stopes were designed with a minimum width of 1.5 m and a vertical distance of 9.5 m. Stope panels were designed at 20 m long (9.5 m high). A ramp mined with an arched profile will be excavated to a width of 3.5 m and a height of 3.5 m, and will incorporate a minimum stand-off distance of 20 m to locate the ramp away from mineralisation. Planned development includes: access drifts, sills (development ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityProductUnits201920182017201620152014
Silver Payable metal oz  ......  Subscription required744,7441,066,5431,422,5232,142,1052,596,120
Silver Metal in concentrate oz  ......  Subscription required785,1541,124,9921,500,9512,261,6332,690,717
Lead Metal in concentrate lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Equivalent Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Metal in concentrate oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Metal in concentrate lbs  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Tonnes milled 106,083 t267,170 t278,204 t337,020 t555,564 t629,493 t
Daily milling rate 1,000 t1,000 t
Daily milling capacity 2,000 t2,000 t2,000 t2,000 t2,000 t

Reserves at December 31, 2021:

CategoryTonnage CommodityGradeContained Metal
Indicated 592 kt Silver 201 g/t 3,830 koz
Indicated 592 kt Gold 0.43 g/t 8.1 koz
Indicated 592 kt Lead 3.9 % 50.9 M lbs
Indicated 592 kt Zinc 4.27 % 55.7 M lbs
Indicated 592 kt Silver Equivalent 398 g/t 7,580 koz
Inferred 1,186 kt Silver 183 g/t 6,980 koz
Inferred 1,186 kt Gold 0.15 g/t 5.5 koz
Inferred 1,186 kt Lead 3.46 % 90.5 M lbs
Inferred 1,186 kt Zinc 1.14 % 29.8 M lbs
Inferred 1,186 kt Silver Equivalent 293 g/t 11,180 koz

Commodity Production Costs:

CommodityUnits20192018201720162015
Credits (by-product) Silver USD -16.33 / oz   -13.13 / oz   -11.71 / oz  
Cash costs Silver USD 16.2 / oz   12.2 / oz   11.9 / oz  
Total cash costs Silver USD  ......  Subscription required 28.5 / oz   21.8 / oz   18.9 / oz   17.9 / oz  
Total cash costs Silver USD  ......  Subscription required† 17.1 / oz†   5.49 / oz†   5.73 / oz†   6.19 / oz†  
All-in sustaining costs (AISC) Silver USD  ......  Subscription required† 27.5 / oz†   11.9 / oz†   8.62 / oz†   8.63 / oz†  
† Net of By-Product.

Operating Costs:

Units20192018201720162015
UG mining costs ($/t milled) USD 22.62318.8
Processing costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Financials:

Units2019201820172016
Sustaining costs M USD  ......  Subscription required 7.2   6.4  
Capital expenditures M USD  ......  Subscription required 11.6   8.6   11.5  
Revenue M USD  ......  Subscription required 17.9   30.1   35  
Operating Income M USD  ......  Subscription required -9.9   -2.1   1.3  



Heavy Mobile Equipment as of December 31, 2016:
HME TypeModelSizeQuantity
Drill jumbo (single boom) ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required
Truck (haul) 30 t ....................... Subscription required
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 16, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Information Form 2018
Annual Report 2018
Corporate Presentation 2018
Press Release 2018
Form 40-F 2017
Annual Report 2016
Corporate Presentation 2016
Financial Review 2016
Form 40-F 2016
Technical Report 2016
Form 40-F 2015
Technical Report 2012
Subscription required - Subscription is required.

News:

NewsDate
First Majestic Produces 7.6M AgEq Oz in Q4 2022 and a Record 31.3M AgEq Oz in 2022... January 19, 2023

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