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Brazil
EPP Complex (Ernesto Mine, Lavrinha Mine, Pau-a-Pique Mine)

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 Location:
338 km W from Cuiabá, Brazil

  Address:
Faz Ernesto Soares de Carvalho - s/n
Pontes e Lacerda
Brazil
78250-000
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WebsiteWeb
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  • Overview
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Overview

StageProduction
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Blast Hole Stoping
  • Avoca
  • Backfill
Production Start...
Mine Life5 years (as of Jan 1, 2020)
The Ernesto/Pau-a-Pique Mine (“EPP”) complex consists of a processing plant fed by satellite mines such as Lavrinha, Japones, Ernesto, Nosde and Pau-a-Pique underground deposit, all of which are under operation.


Owners

Source: p. 11,53
CompanyInterestOwnership
Aura Minerals Inc. 100 % Indirect
Mineracao Apoena Limitada (operator) 100 % Direct
The EPP Project is 100% beneficially owned by Aura. Mineração Apoena S.A (“Apoena”), a company wholly owned by Aura.

Contractors

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Deposit Type

  • Hydrothermal
  • Orogenic
  • Vein / narrow vein


Summary:

The Pau-a-Pique and Ernesto-Lavrinha Deposits are situated in the Middle Proterozoic (ca. 1.0 Ga) Aguapeí belt, a foreland fold and thrust belt that overlies the Early Proterozoic and Middle Proterozoic terrains (Geraldes et al. 2001). The Aguapeí group in the Pau-aPique and Ernesto – Lavrinha areas is structurally marked by reverse faults, isoclinal folds and strong penetrative axial planar cleavage, often crenulated.

The Aguapeí Group is composed of conglomerate, sandstone (arenite) and siltstone that are unconformably deposited on the underlying basement in a braided fluvial to marine depositional environment. The metasediments occur within a fold and thrust belt that is deformed under brittle- ductile conditions and are commonly in tectonic contact with the basement. Strong hydrothermal alteration and associated gold mineralization occurs in association with the lower contact of the Aguapeí Group with the underlying basement.

In the Ernesto Deposit, the contact zone between the Aguapeí sediments and the underlying basement tonalite consists of a 5 m to 25 m thick magnetite-sericite schist unit, containing lenses and elongated bodies of quartz generally concordant with the foliation, and a 1 m to 3 m thick basal layer of intensely altered, crushed and decomposed rock. The magnetite-sericite schist apparently represents strongly altered and deformed sediment, probably a hydrothermally altered and sheared metapelite (mylonite).

The Lavrinha ........


Mining Methods

  • Truck & Shovel / Loader
  • Blast Hole Stoping
  • Avoca
  • Backfill


Summary:

The Ernesto/Pau-a-Pique Mine (“EPP”, “Apoena”) – a mine complex located in the southwest of Mato Grosso state, near Pontes e Lacerda in Brazil which consists of the following gold deposits: the Lavrinha open-pit mine (“Lavrinha”), the Ernesto open-pit mine (“Ernesto”), the Pau-a-Pique underground mine (“Pau-a-Pique” or “PPQ”), the Japones open-pit mine, the Nosde open-pit mine, and the near mine open-pit prospects of Bananal North and Banal South. Ernesto Underground In December 2019, the company started mining operations at the high-grade Ernesto mine. In November 12, 2020, the Ernesto open pit mine, part of the Ernesto/Pau-a-Pique mine complex (“EPP”) declared commercial production effective October 1, 2020. The Ernesto mine, located at Pontes e Lacerda, that was first opened in 2020, was initially planned as an underground mine but is now being worked as an open-pit mine instead. Lavrinha Open Pit Approximately 1.11 Mt of ore at an average grade of 1.69 g/t Au and 14.0 Mt of waste rock will be mined from the Lavrinha open pit over a 2.5 year period. The overall strip ratio for Lavrinha is 12.6:1 with mining conducted 365 days per year by a contractor. The contract is full service and includes providing all mining equipment, drilling, blasting, loading, hauling and maintenance. Total material movement rates for the LOM range from 15,000 to 25,000 tpd. Conventional truck and hydraulic shovels will be utilized. Four excavators, supported by three front-end loaders, will l ........


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnits20222021202020192018
Gold Equivalent koz  ......  Subscription required ^
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.
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Operational Metrics:

Metrics2021202020192018
Total tonnes mined  ......  Subscription required  ......  Subscription required13,540,999 t10,660,792 t
Ore tonnes mined  ......  Subscription required  ......  Subscription required1,400,979 t1,452,268 t
Waste  ......  Subscription required  ......  Subscription required12,140,020 t9,208,523 t
Stripping / waste ratio  ......  Subscription required  ......  Subscription required8.67 6.34
Tonnes processed  ......  Subscription required  ......  Subscription required1,614,664 t1,379,083 t
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Reserves at December 31, 2021:
Open pit Mineral Resources and Reserves: cut-off grade of 0.40 g/t Au.
Underground Mineral Resources: cut-Off Grade of 1.34 g/t Au.
Underground Mineral Reserves: cut-off grade of 1.65 g/t Au.

CategoryTonnage CommodityGradeContained Metal
Proven 88,117 t Gold 1.26 g/t 3,575 oz
Probable 5,995,446 t Gold 1.28 g/t 247,450 oz
Proven & Probable 6,083,563 t Gold 1.28 g/t 251,025 oz
Measured & Indicated 6,844,365 t Gold 1.77 g/t 389,000 oz
Inferred 2,369,081 t Gold 1.77 g/t 134,925 oz

Commodity Production Costs:

CommodityUnits20222021202020192018
Cash costs (sold) Gold Equivalent USD  ......  Subscription required&nbs
Cash costs Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 860 / oz  
^ Guidance / Forecast.
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Financials:

Units202120202019
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue 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
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Aug 16, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
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................................... Subscription required 2020
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Feasibility Study Report 2016
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