• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
Mexico
La Encantada Mine

This page is not tailored to
devices with screen width under 750 px.
 Location:
119 km N from Ocampo, Coahuila, Mexico

  Regional Office:
Fanny Anitua No. 2700
Los Angeles
Durango, Mexico
34076
Phone  ...  Subscription required
Fax01(618)-827-9070
EmailEmail
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in Mexico
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageProduction
Mine TypeUnderground
Commodities
  • Silver
  • Lead
  • Gold
  • Zinc
Mining Method
  • Cut & Fill
  • Inclined caving
  • Sub-level caving
  • Longhole stoping
Production Start...
Mine Life2024
At La Encantada, the Company is continuing to develop towards the Ojuelas orebody to prepare for initial production in the second half of 2022.


Owners

Source: p. 65
CompanyInterestOwnership
First Majestic Silver Corp. 100 % Indirect
La Encantada mine is an actively producing silver mining complex owned and operated by the Company’s wholly owned indirect subsidiary, Minera La Encantada, S.A. de C.V.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Manto
  • Skarn
  • Vein / narrow vein
  • Carbonate replacement
  • Breccia pipe / Stockwork


Summary:

Mineralization consists of polymetallic, high-temperature, intrusion-related carbonate-replacement and minor skarn-hosted deposits. Mineralization occurs as tabular veins, mantos, massive lenses, breccia pipes, and irregular replacement zones.

The deposits were grouped into four geological zones: the Prieta complex, the San Javier–Milagros complex, the Vein systems, and Tailings Deposit No. 4.

Discordant, near-vertical deposits with irregular elongate shapes proximal to main intrusions are referred to as chimneys and breccia pipes. These include the San Javier, Milagros and Prieta breccia deposits.

Tabular sub-vertical replacement deposits are referred to as veins and can contain richer mineral shoots or small chimneys at the intersection of northwest-trending faults and fractures. Steeply dipping, tabular deposits of the Vein systems have a northeast orientation, and are commonly distal to main intrusions.

Massive lens replacement zones of the Prieta complex are proximal to a granodiorite source intrusion and formed adjacent to skarn alteration. Contact metamorphic features (recrystallization to marble, development of hornfels and skarnoid) normally occur peripheral to the skarn zone.

Mineralization consists of secondary oxide minerals including silver, iron, zinc, lead, copper oxides and native silver. Native silver and oxide minerals also occur with sulphides in skarn and carbonate replacementzones where sulphides ar ........


Mining Methods

  • Cut & Fill
  • Inclined caving
  • Sub-level caving
  • Longhole stoping


Summary:

La Encantada Silver Mine included two main underground silver mines: the La Encantada and the El Plomo mines. Mining activities are conducted by both First Majestic and contractor personnel.

The deposits vary in dip, thickness, and geotechnical conditions along strike and dip. Multiple mining methods are required to achieve the maximum efficient extraction of mineralization. Three well established methods were selected:
• Inclined and sublevel caving;
• Long hole stoping;
• Cut-and-fill.

Inclined and sub-level caving is well suited for the bulk tonnage deposits at La Encantada such as the San Javier–Milagros breccia and the Ojuelas deposit. Longhole stoping is being used for near vertical structures that are relatively consistent along strike and length and have competent wall rock. The minimum planned mining width is 1.4 m, based on a minimum vein width of 1.0 m plus an allowance for 0.2 m on the hangingwall and footwall. The stopes are drilled using a basic two-hole pattern when the width is <1.5 m, increasing the number of drill holes per section as the vein increases in width. Cut-and-fill is performed using jackleg drilling and is used for vein deposits that are irregular in nature and commonly possess poorer geotechnical conditions. The minimum mining width is 1.3 m, based on a minimum vein width of 1.0 m and an additional 0.15 m was added to both the hangingwall and footwall as planned dilution using the stope optimizer.

........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityProductUnits2022202120202019201820172016
Silver Metal in doré koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required1,6042,1782,707
Silver Equivalent Metal in doré koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Metal in doré oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Equivalent Payable metal koz  ......  Subscription required  ......  Subscription required
Silver Payable metal koz  ......  Subscription required1,5972,1692,696
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Tonnes milled  ......  Subscription required  ......  Subscription required890,008 t916,894 t825,486 t881,075 t
Daily milling capacity  ......  Subscription required  ......  Subscription required4,000 t4,000 t4,000 t4,000 t
Daily milling rate  ......  Subscription required  ......  Subscription required3,000 t
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Metal prices considered for Mineral Reserves estimates were $20.00/oz Ag.
Mineral resource estimates are for silver only. The Cut-off grades used to constrain the Mineral Resource estimates are 55 g/t Ag for sub-level caving, 80 g/t Ag for cut-and-fill, 75 g/t Ag for Lonhole Stoping, and 110 g/t Ag for Tailings.

CategoryTonnage CommodityGradeContained Metal
Probable 2,260 kt Silver 170 g/t 12,350 koz
Probable 2,260 kt Silver Equivalent 170 g/t 12,350 koz
Indicated 6,767 kt Silver 151 g/t 32,820 koz
Indicated 6,767 kt Silver Equivalent 151 g/t 32,820 koz
Inferred 3,898 kt Silver 164 g/t 20,540 koz
Inferred 3,898 kt Silver Equivalent 164 g/t 20,540 koz

Commodity Production Costs:

CommodityUnits2022202120202019201820172016
Credits (by-product) Silver USD -0.03 / oz   -0.04 / oz  
Cash costs Silver USD 12.5 / oz   10.8 / oz  
Total cash costs Silver Equivalent USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required
Total cash costs Silver USD  ......  Subscription required  ......  Subscription required 18.9 / oz   12.8 / oz   11.3 / oz  
Total cash costs Silver USD  ......  Subscription required†  ......  Subscription required† 18.8 / oz†   12.7 / oz†   11.2 / oz†  
All-in sustaining costs (AISC) Silver Equivalent USD  ......  Subscription required&nbs  ......  Subscription required  ......  Subscription required
All-in sustaining costs (AISC) Silver USD  ......  Subscription required†  ......  Subscription required† 23.8 / oz†   15.5 / oz†   12.8 / oz†  
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2021202020192018201720162015
UG mining costs ($/t milled) USD 6.177.5610.4
Processing costs ($/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 required
Subscription required - Subscription is required.

Financials:

Units202120202019201820172016
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 7.2   5.2  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 16.9   12.5   10  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 24.5   37.6   44.3  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -19.6   -5.2   -2.9  
Subscription required - Subscription is required



Heavy Mobile Equipment as of December 31, 2020:
HME TypeModelSizeQuantityStatusLeased or
Contractor
Bolter ....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Existing Leased
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Existing Leased
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Load-Haul-Dump (LHD) ....................... Subscription required ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required Proposed Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Truck (haul) ....................... Subscription required ....................... Subscription required Existing Leased
Truck (haul) 20 t ....................... Subscription required Existing
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... 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
Form 40-F 2015
Technical Report 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2017-2023 MDO Data Online Inc.