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Mexico
Cienega Mine

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 Location:
206 km NW from Durango, Durango, Mexico
  Regional Office:
Guadalupe Patoni No. 333, Colonia Del Maestro
Durango
Durango, Mexico
34240
Phone  ...  Subscription required
Fax01-(674)-864-60-13
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News
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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Silver
  • Zinc
  • Lead
Processing
  • Flotation
  • Leaching plant / circuit
Mine Life3.9 years (as of Jan 1, 2019)

Owners

Source: p. 50
CompanyInterestOwnership
Fresnillo plc. 100 % Indirect
Minera Mexicana La Ciénega SA de CV 100 % Direct
Deposit Type

  • Epithermal
  • Vein / narrow vein

Summary:

The La Ciénega gold-silver veins are low-sulfidation, epithermal-type deposits related to a rhyolitic flow-dome complex. Ore deposits in the La Ciénega district consist of a series of subparallel, northwest– southeast-trending veins which are hosted in andesitic and rhyolitic rocks that belong to the Tertiary-age Upper and Lower Volcanic sequences. The veins are vertical to steeply dipping structures which consist of quartz, generally containing gold-silver and less than 10 percent combined lead, zinc, and copper sul-fide, and sulfosalt minerals. Supergene enrichment is present in the upper parts of the known ore shoots.

Mining Methods

Summary:

Crushing and Grinding

Processing

  • Flotation
  • Leaching plant / circuit

Source: Subscription required

Recoveries & Grades:

CommodityParameter20192018201720162015201420132012
Gold Head Grade, g/t 1.661.651.821.842.072.592.93.62
Silver Head Grade, g/t 158.9164.4151.5143.5129108.5121.6105.2
Zinc Head Grade, % 1.130.830.9810.80.730.751.12
Zinc Concentrate Grade, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Head Grade, % 0.670.60.740.680.610.530.560.68
Lead Concentrate Grade, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Production:

CommodityProductUnits2019201820172016201520142013
Gold Metal oz  ......  Subscription required66,86971,94772,85185,662108,211112,053
Silver Metal oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Metal t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zinc Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Metal t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Tonnes milled  ......  Subscription required1,324 kt1,302 kt1,275 kt1,329 kt1,341 kt
Daily milling capacity  ......  Subscription required4 kt4 kt4 kt4 kt4 kt
Annual milling capacity  ......  Subscription required1,340 kt1,340 kt1,340 kt1,340 kt1,340 kt
Subscription required - Subscription is required.

Reserves at May 31, 2019:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 5,248 kt Gold 2.18 g/t 368 koz
Proven & Probable 5,248 kt Silver 229 g/t 38,632 koz
Proven & Probable 5,248 kt Zinc 1.27 % 66 kt
Proven & Probable 5,248 kt Lead 0.77 % 40 kt
Measured 6,499 kt Gold 3.8 g/t 794 koz
Measured 6,499 kt Silver 164 g/t 34,247 koz
Measured 6,499 kt Zinc 1.8 % 117 kt
Measured 6,499 kt Lead 1.14 % 74 kt
Indicated 6,639 kt Gold 1.62 g/t 345 koz
Indicated 6,639 kt Silver 235 g/t 50,070 koz
Indicated 6,639 kt Zinc 1.23 % 82 kt
Indicated 6,639 kt Lead 0.76 % 50 kt
Measured & Indicated 13,137 kt Gold 2.7 g/t 1,140 koz
Measured & Indicated 13,137 kt Silver 200 g/t 84,316 koz
Measured & Indicated 13,137 kt Zinc 1.51 % 199 kt
Measured & Indicated 13,137 kt Lead 0.95 % 125 kt
Inferred 5,028 kt Gold 2.16 g/t 349 koz
Inferred 5,028 kt Silver 276 g/t 44,663 koz
Inferred 5,028 kt Zinc 1.62 % 81 kt
Inferred 5,028 kt Lead 0.9 % 45 kt

Commodity Production Costs:

CommodityUnits201920182017201620152014
Cash costs Gold USD  ......  Subscription required† 25.9 / oz† -163.7 / oz† -217.19 / oz† 245.49 / oz† 288 / oz†
All-in sustaining costs (AISC) Gold USD  ......  Subscription required† 1,414 / oz† 691.43 / oz† 428 / oz† 710.37 / oz† 786 / oz†
† Net of By-Product.
Subscription required - Subscription is required.

Operating Costs:

Units2019201820172016201520142013
Total operating costs ($/t milled) USD 78.370.866.555.56370.870.8

Financials:

Units201920182017201620152014
Capital expenditures M USD  ......  Subscription required72.9  46.5   32.7   24.6   37.9  
Revenue M USD  ......  Subscription required187.1  198.3   185   169.5   206  
Gross profit M USD  ......  Subscription required79.2  97.1   100.1   71.1   97  
Subscription required - Subscription is required

Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 28, 2020
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018
Subscription required Subscription required Subscription required 2017
Subscription required Subscription required Subscription required 2016
Subscription required Subscription required Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Annual Report 2016
Corporate Presentation 2016
Other 2016
Annual Report 2015
Corporate Presentation 2015
Annual Report 2014
Year-end Mineral Reserves 2014
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Aerial view:

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