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Argentina
Manantial Espejo Operation (COSE (Cap-Oeste Sur Este) Project, Joaquin Project)

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 Location:
141 km NW from San Julian, Argentina

  Regional Office:
Castex 3123 2° Ciudad Autónoma
Buenos Aires
Argentina
C1425CDA
Phone  ...  Subscription required
Fax+54-11-5533-8768
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
  • Gold
Mining Method
  • Mechanized Cut & Fill
  • Longhole stoping
Processing
  • Gravity separation
  • Agitated tank (VAT) leaching
  • Counter current decantation (CCD)
  • Concentrate leach
  • Merrill–Crowe
  • Cyanide (reagent)
Mine Life2021
Latest NewsPan American Silver Reports Ground Fall Accident and Suspension of Operations in Argentina     June 17, 2019


Owners

Source: p. 57
CompanyInterestOwnership
Pan American Silver Corp. 100 % Indirect
Minera Tritón Argentina S.A. 100 % Direct

Deposit Type

  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

The mineralized deposits at the Manantial Espejo mine are predominantly veins with short strike slip and larger down dip displacement. The styles of mineralization include massive quartz veins, vein breccias, sheeted and stockwork veining, and minor dissemination. Gold occurs mainly as electrum in pyrite while the silver occurs in a number of forms including argentiferous galena and silver sulphosalts. Sulphides account for up to 3% to 5% ocount for up to 3% to 5% of the rock mass as veinlets and dissemination.

Mineralization at Manantial Espejo is hosted in four main veins known as Maria, Karina/Union, Melissa, and Concepcion. The majority of the mineralization out lined to date is in the Maria Vein. The vein is a thick silica vein exposed on surface fot more than one kilometre and has been intersected at a depth of up to 275 metres. This vein averages 7.8 metres in true wight and ranges from 0.63 metres to 20 metres and is open to the east and at depth. Economic grade mineralization of the vein is less continuous. Open pit economic grade zones measure tens to hundreds of metres in longitudinal dimention, with over 100 metres of vertical extent in the Maria West area.

The Karina/Union Vein is exposed on surface for a distance of 850 metres and has been drilled to a depth of 150 metres. Several interconnected high grade silver-gold epithermal veins in excess of 20 metres true wights have been observed in drillhole intersections.

The Melissa vein is thought to be the extensional component to the Maria shear system. The Melissa Vein has been defined by drill hole along a 300 metres strike lenght and 200 metres down dip and averages from between 1.5 and 2.5 metres wide.

The Concepción Vein is a single quartz vein. Mineralization occurs over a strike lenght of 600 metres and is open at depth and at both ends. The host rocks mineralogy and alteration are similar to the other veins on the property.


Mining Methods

  • Mechanized Cut & Fill
  • Longhole stoping


Summary:

Ore was mined at Manantial Espejo using a combination of conventional open pit and underground mining methods until October 2017, when open pit mining ceased. All production now is from the underground mine and surface stockpiles. The underground mining operations consist primarily of long-hole and mechanized cut and fill mining methods utilizing development waste as backfill. The underground mine is expected to operate into 2021.


Crushing and Grinding


Processing

  • Gravity separation
  • Agitated tank (VAT) leaching
  • Counter current decantation (CCD)
  • Concentrate leach
  • Merrill–Crowe
  • Cyanide (reagent)

Source: Subscription required

Summary:

Ore is treated by conventional crushing, semi- autogenous/ball mill grinding, bulk gravity concentration, intensive gravity concentrate agitation leaching, thickening, agitated cyanide leaching of the gravity tailings slurry, counter current decantation thickening, Merrill Crowe zinc precipitation, sulphur dioxide cyanide neutralization, conventional pulp tailings disposal, and conventional silver and gold doré bar production from melting of the Merrill Crowe precipitate. The nominal treatment rate at design capacity is 2,000 tpd of ore.

Recoveries & Grades:

CommodityParameter2019201820172016201520142013
Silver Head Grade, g/t 127135134143158157150
Gold Head Grade, g/t 1.081.421.882.943.312.822.81
Silver Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Production:

CommodityUnits202020192018201720162015
Silver koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required3,1233,1363,583
Gold koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Tonnes milled  ......  Subscription required  ......  Subscription required  ......  Subscription required753.6 kt774.9 kt796.9 kt
Daily milling capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Daily milling rate  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at June 30, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven 0.8 Mt Silver 170 g/t 4.6 M oz
Proven 0.8 Mt Gold 1.35 g/t 36.2 koz
Probable 0.1 Mt Silver 204 g/t 0.9 M oz
Probable 0.1 Mt Gold 3.64 g/t 16 koz
Measured 0.1 Mt Silver 164 g/t 0.7 M oz
Measured 0.1 Mt Gold 1.65 g/t 7.1 koz
Indicated 0.2 Mt Silver 241 g/t 1.4 M oz
Indicated 0.2 Mt Gold 2.86 g/t 16.5 koz
Inferred 0.5 Mt Silver 194 g/t 3 M oz
Inferred 0.5 Mt Gold 2.71 g/t 41.4 koz

Commodity Production Costs:

CommodityUnits20202019201820172016
Cash costs (sold) Silver USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required† 18.3 / oz† 4.28 / oz†
Total cash costs (sold) Silver USD
All-in sustaining costs (sold) Silver USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required† 23.4 / oz† -2.08 / oz†
^ Guidance / Forecast.
† Net of By-Product.
Subscription required - Subscription is required.

Financials:

Units2019201820172016201520142013
Capital expenditures (planned) M USD  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 14.1   26.7   12  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required 145.01   156.08   149.72  
Operating Income M USD  ......  Subscription required  ......  Subscription required
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -75.04   -87.18   -1.38  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -73.54   -64.1   -2.45  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Apr 17, 2020
....................... Subscription required ....................... Subscription required Subscription required Apr 17, 2020
....................... Subscription required ....................... Subscription required Subscription required Apr 17, 2020
....................... Subscription required ....................... Subscription required Subscription required Apr 17, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
................................... Subscription required 2018
Annual Information Form 2017
Annual Report 2017
Annual Information Form 2016
Financial Review 2016
Management Discussion & Analysis 2016
Annual Report 2015
Management Discussion & Analysis 2015
Form 40-F 2014
Technical Report 2006
Subscription required - Subscription is required.

News:

NewsDate
Pan American Silver Reports Ground Fall Accident and Suspension of Operations in Argentina June 17, 2019

Aerial view:

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