• 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
Brazil
Aurizona Expansion Project (Aurizona)

This page is not tailored to
devices with screen width under 750 px.
 Location:
13 km N from Godofredo Viana, Brazil

  Project Contacts:

Godofredo Viana
Brazil
65285-000
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 Brazil
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • 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

StagePermitting
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
  • Longhole open stoping
  • Cemented backfill
Mine Life11 years (as of Jan 1, 2021)
Technical Report for a Prefeasibility Study to include an underground mining operation of the Piaba gold deposit at the existing Piaba open pit plus additional open pits at Piaba East, Boa Esperança, Tatajuba and Genipapo.


Owners

Source: p. 22
CompanyInterestOwnership
Mineração Aurizona S.A (operator) 100 % Direct
Equinox Gold  Corp. 100 % Indirect
Equinox, through its indirect wholly-owned subsidiary Mineração Aurizona S.A. (MASA), owns all surface rights required for the operation of the Aurizona Mine.

Contractors

Subscription required - Subscription is required.


Deposit Type

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


Summary:

The main deposit type in the Aurizona project area is greenstone-hosted orogenic gold, a subtype of the larger orogenic class of gold deposits.

The primary mineralization style on the Property consists of orogenic-style gold deposits, typically associated with the quartz diorite and feldspar quartz diorite units in brittle-ductile structures like the ASZ. Significant gold occurrences in the project area include the Piaba, Boa Esperança, Tatajuba and Genipapo deposits, as well as the Mestre Chico and Micote targets.

Piaba is a structurally-controlled, tabular, orogenic gold deposit with a strike length of ~3.3 km, width of 10 – 50 m, and down-dip extent of at least 700 m, beyond which the deposit is sparsely explored. The deposit is hosted in the brittle-ductile ASZ that is ENE-WSW striking and steeply north dipping to the NNW.

Within the Piaba deposit, the ASZ system is divided into ten shear zones and/or brittle faults, partially segmenting the deposit with limited offsets. The maximum offset observed is 100 m, whereas most offsets are in the order of 10 m. The Pirocaua fault zone at the east-northeast end of the deposit is a significant structure. This brittle fault zone is up to 350 m wide and locally disrupts the Piaba gold zone with a maximum offset of 75 m. At the western end of Piaba on section 1900W there is a northwest striking fault, which truncates the gold zone at depth. Near surface mineralization continues west of the fault in P ........


Mining Methods

  • Truck & Shovel / Loader
  • Longhole open stoping
  • Cemented backfill


Summary:

The Aurizona Mine is currently an operating open pit mine with ore processing by gravity concentration and cyanide leach (CIL) circuit which restarted operations in 2018 after three years on care and maintenance. This PFS considers the addition of an underground mine beneath the existing Piaba pit that will assist in extending the mine life to 2032. The additional open pit areas of Tatajuba and Genipapo have been incorporated in the mine plan.

Boa Esperança
Criteria used for the Piaba and Piaba East pits in laterite and saprolite are considered to be relevant and are applied in the Boa Esperança pit design. The Boa Esperança pit is only 52 m deep at its maximum depth which is less than the depth of Piaba and Piaba East, both which have shown stability with the design parameters.

Tatajuba, Genipapo North and South
Geotechnical guidance for the outlying areas of Tatajuba, Genipapo North and South have relied upon the earlier work for Piaba as guidance for the PFS. The majority of Tatajuba is in lateritic and saprolitic material (61%) which is expected to behave in a manner similar to the Piaba pits. The thickness of the laterite and saprolite material totals a maximum of 46 m. The transition and fresh rock account only for 22% and 17% respectively and are predominantly at the east and west extents of the pit with a maximum combined thickness of 65 m. The geotechnical design parameters used at Tatajuba are the same as at Piaba.

Undergro ........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsLOM
Gold oz 1,502,932
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Daily processing rate  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Annual processing rate  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

Reserves at June 30, 2021:
Mineral Resources are reported using a cut-off grade of 0.30 g/t gold for open pit resources and 1.00 g/t gold for underground resources.

CategoryTonnage CommodityGradeContained Metal
Proven 16,581 kt Gold 1.39 g/t 740 koz
Probable 15,749 kt Gold 1.82 g/t 920 koz
Proven & Probable 32,330 kt Gold 1.6 g/t 1,660 koz
Measured & Indicated 18,117 kt Gold 1.49 g/t 868 koz
Inferred 12,689 kt Gold 2.19 g/t 895 koz

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Gold USD  ......  Subscription required&nbs
All-in sustaining costs (AISC) Gold USD  ......  Subscription required&nbs
Assumed price Gold USD  ......  Subscription required&nbs
* According to 2021 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2021
OP mining costs ($/t mined) USD 10.8 *
UG mining costs ($/t mined) USD  ......  Subscription required
UG mining costs ($/t milled) USD  ......  Subscription required
OP mining costs ($/t milled) USD  ......  Subscription required
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
OP OpEx $M USD  ......  Subscription required
UG OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 373
G&A costs $M USD 209
Total OpEx $M USD  ......  Subscription required
Total Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Net revenue (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 5% $M USD  ......  Subscription required
After-tax NPV @ 5% $M USD  ......  Subscription required
Subscription required - Subscription is required.


Heavy Mobile Equipment as of September 20, 2021:
HME TypeModelSizeQuantityStatusLeased or
Contractor
Drill ....................... Subscription required 127 mm ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Excavator ....................... Subscription required 16.5 cu. m ....................... Subscription required Existing Leased
Excavator ....................... Subscription required 6.7 cu. m ....................... Subscription required Existing Leased
Excavator ....................... Subscription required 4.1 cu. m ....................... Subscription required Existing Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed
Truck (haul) ....................... Subscription required 39 t ....................... Subscription required Existing Leased
Truck (haul) ....................... Subscription required 91 t ....................... Subscription required Existing Leased
Truck (haul) ....................... Subscription required 32 t ....................... Subscription required Existing Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2021
....................... Subscription required ....................... Subscription required Subscription required Sep 20, 2021
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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