• 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
Valenciana Mines Complex (Guanajuato Mine, San Ignacio Mine)

This page is not tailored to
devices with screen width under 750 px.
 Location:
0 km from Guanajuato, Guanajuato, Mexico

  Address:
Ex Hacienda de Bustos S/N Colonia Cata
Guanajuato
Guanajuato, Mexico
36010
Phone  ...  Subscription required
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
  • 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
  • Gold
Mining Method
  • Mechanized Cut & Fill
  • Cut & Fill
Production Start...
The Valenciana Mines Complex formerly known as the Guanajuato Mine Complex comprises the Guanajuato mine (“Guanajuato”), the San Ignacio mine (“San Ignacio”), and the Cata processing plant, which produces silver and gold concentrates.

Mining of mineralized material has begun at the Valenciana Mines Complex ("VMC"); thus all of the mining assets - Topia, San Ignacio and VMC - are now in production. The timetable for the restart of the Cata mill has been moved forward from early 2023 to Q4, 2022.


Owners

Source:
CompanyInterestOwnership
Minera Mexicana El Rosario, S.A. de C.V. (operator) 100 % Direct
Guanajuato Silver Company, Ltd. 100 % Indirect
Great Panther Mining Limited reports that it has closed the previously announced sale of its Mexican subsidiary Minera Mexicana El Rosario S.A. de C.V., which owns the Guanajuato Mine Complex, the Topia mine, and the El Horcón and Santa Rosa projects, to Guanajuato Silver Company Ltd.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Epithermal
  • Vein / narrow vein
  • Breccia pipe / Stockwork


Summary:

The mineral deposits in the Guanajuato area are classic fissure-hosted low-sulphidation epithermal gold-silver-bearing quartz veins and stockwork. Mineralization of economic importance consists of fine-grained disseminations of acanthite, electrum, aguilarite, and naumannite with accessory pyrite, and relatively minor sphalerite, galena, and chalcopyrite. Gangue minerals include quartz, calcite, adularia, and sericite. The veins are accompanied by hydrothermal alteration consisting of argillic, phyllic, silicic, and propylitic facies. Mineral textures in this zone are typically fracture-filling, drusy, and coliform masses.

Guanajuato
At Guanajuato, Cenozoic volcanic and volcanogenic sediments unconformably overlie the Mesozoic basement rocks. In the area, the oldest Cenozoic unit is the Paleocene Comanja granite, (66 Ma – 56 Ma), this was followed by the Eocene extrusion of andesite (56 Ma – 33.9 Ma) which was sporadically deposited and contemporaneous with the deposition of the Guanajuato conglomerate in localized grabens. The Guanajuato conglomerate underlies an unconformity beneath a sequence of felsic to mafic volcanic rocks that consist of Oligocene ignimbrites, lava flows and domes (33.9 Ma – 23 Ma).

The best mineralization is often found related to bends in the Veta Madre orientation (Barclay, 2007 and Rhys, 2013) such as at San Vicente in the Rayas area, and at Cata and Santa Margarita. These structural bends may be due to changes in rock ty ........


Mining Methods

  • Mechanized Cut & Fill
  • Cut & Fill


Summary:

The Guanajuato Mine Compleex (the “GMC”) comprises the Guanajuato and San Ignacio operations. Typically, all zones at the GMC are extracted by the Cut & Fill mining method.

Guanajuato mine
Guanajuato consists of a series of interconnected, previously independent, mines including Promontorio, Santa Margarita, Rayas, Los Pozos, Cata, Valenciana and Guanajuatito.

Mining at Guanajuato predominantly comprises cut and fill stoping, with some pillar recovery in historic workings, and a few zones where mineralized extensions are discovered and mined over a period of a few months. Mining is generally more selective using jacklegs. However, where possible, mechanized cut and fill is utilized.

Two main shafts serve access to the active mine areas, while several other old shafts provide ventilation support. The Rayas shaft is used for transportation of personnel and supplies, while the Cata shaft, located just above the processing plant is used to transport the mineralized material for milling. These are currently de-energized and access of men and materials and egress of ore is via the Rayas ramps, San Vicente and Guanajuatito that provide the access at each end of the mine network, including for mobile equipment.

Mining is conducted by contractors, primarily sourced from nearby communities, utilizing equipment owned by the Company and the contractors. Mine contractors and equipment are alternated between the mines, including San Ignaci ........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits202120202019201820172016
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required1,096,7571,386,9641,473,229
Gold oz  ......  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.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required185,587 t301,014 t316,810 t320,043 t
Tonnes milled  ......  Subscription required  ......  Subscription required187,610 t300,624 t319,963 t320,903 t
Daily processing capacity  ......  Subscription required  ......  Subscription required
Daily processing rate  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at July 31, 2021:
Guanajuato mine: Cut-offs are based on the marginal operating costs per mining area being US$135.70/tonne for Cata, US$135.70/tonne for Santa Margarita, US$96.50/tonne for Los Pozos, US$124.90/tonne for Guanajuatito, US$148.50/tonne for Promontorio, and US$113.10/tonne for Valenciana.

San Ignacio mine: Cut-offs are based on the marginal operating costs per mining area being US$127.40/tonne for San Ignacio.

CategoryTonnage CommodityGradeContained Metal
Measured & Indicated 519,493 t Silver 196 g/t 3,269,927 oz
Measured & Indicated 519,493 t Gold 2.3 g/t 38,386 oz
Measured & Indicated 519,493 t Silver Equivalent 391 g/t 6,537,755 oz
Measured & Indicated 519,493 t Gold Equivalent 4.61 g/t 76,915 oz
Inferred 665,977 t Silver 194 g/t 4,149,076 oz
Inferred 665,977 t Gold 2.42 g/t 51,876 oz
Inferred 665,977 t Silver Equivalent 400 g/t 8,558,540 oz
Inferred 665,977 t Gold Equivalent 4.7 g/t 100,689 oz

Commodity Production Costs:

CommodityUnits202120202019201820172016
Cash costs (sold) Silver USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 10.2 / oz†   4.32 / oz†   0.85 / oz†  
All-in sustaining costs (sold) Silver USD  ......  Subscription required†  ......  Subscription required†  ......  Subscription required† 14.1 / oz†   9.17 / oz†   5.2 / oz†  
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units20192018201720162015
Total operating costs ($/t milled) USD 95107927891

Financials:

Units202120202019201820172016
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1.1   2.1   2.8  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 39.6   49.4   49.8  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1   10.9   17.9  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1.1   10   16.9  
Subscription required - Subscription is required



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 is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
Other 2022
Press Release 2022
Technical Report 2022
................................... 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
Financial Review 2018
Management Discussion & Analysis 2018
Year-end Mineral Reserves 2018
Financial Review 2017
Management Discussion & Analysis 2017
Management Discussion & Analysis 2016
Financial Review 2015
Management Discussion & Analysis 2015
Management Discussion & Analysis 2014
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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