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Mexico
Zimapan Mine

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 Location:
7 km NW from Zimapan, Hidalgo, Mexico

  Regional Office:
Ex Hacienda La Llave S/N Unidad Habitacional La Llave
Zimapán
Hidalgo, Mexico
42336
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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
  • Silver
  • Lead
  • Zinc
  • Copper
Mining Method
  • Cut & Fill
  • Sub-level stoping
  • Longhole stoping
  • Room-and-pillar
Production Start...
Mine Life7 years (as of Jan 1, 2020)


Owners

Source: p. 3
CompanyInterestOwnership
Santacruz Silver Mining Ltd. 100 % Indirect
Carrizal Mining S.A. de C.V. (operator) 100 % Direct
On July 28, 2020, Santacruz Silver Mining, through its wholly-owned Mexican subsidiary Carrizal Mining, S.A. de C.V. (“Carrizal Mining”), entered into a legally binding term sheet with Minera Cedros, S.A. de C.V. (“Minera Cedros”) to acquire the Zimapan Mine. The Zimapan Mine at the time was under lease by Carrizal Mining from Minera Cedros.

On April 23, 2021, Santacruz Silver Mining completed the acquisition of the Zimapan Mine.

Contractors

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Deposit Type

  • Carbonate replacement
  • Skarn
  • Intrusion related
  • Manto


Summary:

The Property is located along the margins of the Sierra Madre Oriental physiographic province. The regional geology is comprised of platform and basin sediments that were formed during the Mesozoic era on top of Paleozoic and Precambrian basement rocks. The region has undergone compression resulting in complex folding, faulting and uplift. Mantos and chimney style mineralization are associated with the Horizontes horizon within the La Negra member of the Lower Cretaceous Tamaulipas Formation. Pliocene age intrusions are emplaced into the stratigraphy on a local scale. Locally, the Carrizal mine contains six mineral zones and the El Monte Mine contains eight mineral zones that are hosted in limestone and calcareous shales of the Las Trancas, Tamaulipas, and Soyatal formations. The mineral zones are characterized as high temperature carbonate replacement deposits that consists of silver, lead, zinc and copper rich semi-massive and massive sulfide bodies that occur in proximity to quartz-monzonitic to monzonitic intrusions and monzonitic quartz-feldspar porphyry dikes. Argentite, galena, sphalerite, and chalcopyrite are the dominant economic minerals in the mineral zones.

Deposit Type
The general characteristics of mineralization at the Zimapan property are consistent with polymetallic replacement deposits as described by Morris (1986) and Cox (1986), published by Bray (1995). The mineral zones are further characterized as high temperature, chimney-style ca ........


Mining Methods

  • Cut & Fill
  • Sub-level stoping
  • Longhole stoping
  • Room-and-pillar


Summary:

Underground open stope mining is the primary method used at the Carizzal and El Monte mines. Variations of this method includes cut-and-fill, long hole stoping, and sub-level stoping for sub-vertical to inclined bodies, and room and pillar mining for sub-horizontal bodies. Sub-level stoping are typically mined in 15.0 m to 20.0 m primary and secondary panels between the main levels. Cross-cuts from the underground workings are typically developed through the footwall waste rock. Material from development headings through waste rock is used to backfill exhausted stopes where required. Typical room and pillar height are approximately 5.0 m.

The dimensions of the access drifts and ramps are approximately 4.5 m high by 4.0 m wide while production drifts are similar or 3.5 m high by 3.0 m wide. Muck piles and waste rock piles are prepared by mechanized drilling and blasting methods and the material is removed from the active stopes by scooptram vehicles. Material is then loaded into 10 to 15-tonne haul trucks and transported to the El Monte plant through the Lomo de Toro access ramp. Mechanized equipment is powered by diesel.

The main workings and access are actively ventilated while cross cuts and stopes are passively ventilated by raises and vent shafts, and actively ventilation if necessary.


Crushing and Grinding
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Processing

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Summary:

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Production:
Data reported for 2019 only reflect Santacruz’s interest. Amounts reflect the Company’s proportionate interest in the mine which was 50% and 100% respectively for Q3 and Q4 2019.

CommodityUnits202120202019201820172016
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required1,413,2281,467,9031,180,439
Lead t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Equivalent oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate.
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Operational Metrics:

Metrics2021202020192018
Tonnes milled  ......  Subscription required  ......  Subscription required243,313 t
Daily milling capacity  ......  Subscription required  ......  Subscription required3,200 t3,200 t
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Reserves at October 15, 2019:
The Property presently does not contain a mineral resource estimate that is in accordance with CIM Definition Standards on Mineral Resources and Reserves.

CategoryTonnage CommodityGrade
Proven & Probable 4.1 Mt Silver 81 g/t
Proven & Probable 4.1 Mt Lead 0.79 %
Proven & Probable 4.1 Mt Zinc 2.87 %
Proven & Probable 4.1 Mt Copper 0.48 %
Inferred 4.2 Mt Silver 83 g/t
Inferred 4.2 Mt Lead 0.84 %
Inferred 4.2 Mt Zinc 3.13 %
Inferred 4.2 Mt Copper 0.44 %

Commodity Production Costs:

CommodityUnits202120202019
Cash costs (sold) Silver Equivalent USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
All-in sustaining costs (sold) Silver Equivalent USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Operating Costs:

Units202120202019
Total operating costs ($/t milled) USD 51.943.447.7

Financials:

Units202120202019
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 1, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 9, 2022
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Staff:

Total WorkforceYear
Subscription required 2020
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
................................... 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 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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