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Mexico
Taxco Mine (IMMSA Operation)

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 Location:
0 km from Taxco, Guerrero, Mexico

  Regional Office:
Campos Elíseos N° 400 Colonia Lomas de Chapultepec Delegación Miguel Hidalgo
Mexico city
Mexico, Mexico
Phone  ...  Subscription required
Fax(5255) 1103-5567
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Lead
  • Zinc
  • Silver
  • Gold
Mining Method
  • Cut & Fill
  • Shrinkage stoping
  • Room-and-pillar
Processing
  • Flotation
Taxco mine in Mexico has been on strike since July 2007. It is expected that operations at this mine will remain suspended until these labor issues are resolved.


Owners

Source: p. 3, 49
CompanyInterestOwnership
Grupo Mexico S.A. de C.V. 88.91 % Indirect
Ownership Tree
Industrial Minera Mexico, S.A. de C.V. (together with its subsidiaries, the “IMMSA unit”) operates five underground mines that produce zinc, lead, copper, silver and gold, a coal mine and a zinc refinery.

IMMSA’s principal mining facilities include Charcas, Santa Barbara, San Martin, Santa Eulalia and Taxco.

Deposit Type

  • Vein / narrow vein


Summary:

The Taxco district is stratigraphically formed of rocks from Jurassic to recent periods, which are described below, with emphasis on the mineralization control characteristics. The Taxco schist is composed of a series of schists and fylites, most likely from a volcanicsedimentary sequence of tufa and limonites. They represent a sequence of metamorphological arch and its age has been defined as Jurassic Medium. The Morelos formation from the Upper Cretaceous age (Apian-Turonian) lies on a discordant form over Taxco schist and its contact is several times marked by a clay zone (mylonites) and breccia, which implies a shifting of this unit over the schist (packs). The Mezcala formation is constituted by a sequence of shale and sandstone with some inter-stratified layers of limestone. Its base is calcarean. Its top tends to be rich in clay with thin limestone layers. The Balsas group is constituted by conglomerates and is sandy on its base, rests in discordance form on an erosioned surface from the Mexcala formation. The Tilzapotla Ryolite is the newest rock, which emerged in the district before the alluvial deposit. It is formed of flux, breccia, tuffaceous, ignimbrites and vitrophyrre of ryolite composition.

There are four types of ore deposits found in Taxco district. In order of importance they are as follows: fissure-filling veins, replacement veins, blanket-like replacement bodies (so called “mantos”), stock works and brecciate chimneys. The three first ones are intimately related and they were formed in the same era, although in different stages.

The veins reach up to two kilometers in length with a variable potency of thirty centimeters up to eight meters, which is the case of copper veins at the mines of Guerrero, Hueyapa and Palo Amarillo at the San Antonio mine; the Remedios mine has among other veins, El Muerto and El Cristo one kilometer long and five meters in average potency.

Economic ore is found in the deposit in veins. Ore mineral include argentiferous galena (PbS), sphalerite (ZnS), pyrargyrite (Ag3SbS3), and other sulfosalts, and replacement “mantos.” The most mineralized zones are in the vicinity of the veins with the limestone. The mineralization is more intensive in the base of the limestone and consists of sphalerite (ZnS), galena (PbS), pyrite (FeS) and magnetite (FeOFe2O3).


Mining Methods

  • Cut & Fill
  • Shrinkage stoping
  • Room-and-pillar


Summary:

The Taxco mining complex includes several underground mines (San Antonio, Guerrero and Remedios) and employ shrinkage, cut-and-fill and the room and pillar mining methods at the mines.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

The flotation plant has a capacity of 2,000 tons of ore per day. The lead concentrate is treated at a third party refinery in Mexico. The zinc concentrate is either treated at the San Luis Potosi zinc refinery or exported.


Combined production numbers are reported under IMMSA Operation

Operational Metrics:

Metrics201920182017201620152014
Annual milling capacity  ......  Subscription required730 kt730 kt730 kt730 kt730 kt
Daily milling capacity  ......  Subscription required2,000 t2,000 t2,000 t
Subscription required - Subscription is required.

Combined reserves/resources are reported under IMMSA Operation



Heavy Mobile Equipment as of December 31, 2013:
HME TypeQuantity
Scoop Tram 10
Truck (haul) 5

Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2013

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Form 10-K 2018
Form 10-K 2017
Annual Report 2016
Form 10-K 2016
Annual Report 2015
Form 10-K 2015
Annual Report 2014
Form 10-K 2014
Form 10-K 2013
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Aerial view:

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