• 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
Deepening Inferred (Extension) Project

This page is not tailored to
devices with screen width under 750 px.
 Location:
87 km SE from Petrolina, Brazil

  Project Contacts:
Fazenda Caraíba, s/n, distrito de Pilar
Jaguarari
Brazil
489670-000
Phone  ...  Subscription required
Fax+557435328763
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

StagePreliminary Economic Assessment
Mine TypeUnderground
Commodities
  • Copper
Mining Method
  • Longitudinal open stoping
  • Transverse open stoping
  • Vertical block mining (VBM)
  • Vertical Crater Retreat
  • Cemented backfill
Mine Life2033
The Deepening Inferred Project is based upon an ongoing exploration campaign in the Pilar UG Mine below level -965 which, as at the Effective Date, had identified a significant portion of Inferred mineral resources within the Deepening Extension Zone.

The primary objective of the Deepening Inferred Project is to evaluate the potential to utilize the planned infrastructure to mine and process the Inferred mineral resources within the in the Pilar UG Mine’s Deepening Extension Zone, as well as evaluate the potential for the integration of required development in support of the Deepening Inferred Project.


Owners

Source: p. 10
CompanyInterestOwnership
Ero Copper Corp. 99.6 % Indirect
Mineração Caraíba S.A. (operator) 100 % Direct
Ownership Tree

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Magmatic


Summary:

The Curaçá valley deposits are complex with features that do not conform to conventional deposit models (this section is modified from Desrochers et al., 2020). The strong spatial association of mineralization in the Curaçá valley deposits with mafic-ultramafic bodies, dominated by orthopyroxenite, and the common occurrence of some of the sulphide interstitial (“intercumulus”) to orthopyroxene, led several researchers to conclude that mineralization formed through orthomagmatic processes (e.g., Maier and Barnes, 1996), and hence invoked a modified magmatic sulphide model. A number of features, however, are unusual for magmatic sulphide deposits including the high Cu/Ni ratio (virtual absence of Ni in many deposits); significant amounts of bornite in many deposits; significant amounts of magnetite, most of which contains elevated Al, Cr, V, Ni and Zn; the abundance of phlogopite in the orthpyroxenite and wall rocks locally associated with sulphides and in some cases also containing concentrations of apatite and zircon; as well as the low S/Se ratio in sulphides. Maier and Barnes (1996) suggest various mechanisms to explain some of these features including sulfur loss resulting in the abundance of magnetite and the low S/Se ratio.

The Pilar Mine is located in the southern part of the MCSA Mining Complex within the Curaçá Valley. The geology of the mine consists of a high-grade metamorphic terrain, composed of gneiss and migmatite of the Caraíba Complex that were in ........


Mining Methods

  • Longitudinal open stoping
  • Transverse open stoping
  • Vertical block mining (VBM)
  • Vertical Crater Retreat
  • Cemented backfill


Summary:

Mining operations were assumed to be the same as for the Deepening Inferred Project, using a combination of transverse stoping and longitudinal stoping mining method. Dilution was set to 1.0m, comprised of 0.5m for the hanging wall, 0.5m for the footwall and a maximum waste percentage of 75%.

In support of the Deepening Inferred Project, an additional 15km of horizontal development is required when compared to the Deepening Extension Project. In support of the Deepening Inferred Project, an additional 554 m of vertical development is required when compared to the Deepening Extension Project.

Extraction of mined material from the Deepening Inferred Project required the addition of two new panels below -1381L, as the production panels and supporting infrastructure to be built from level -1069 to -1381 are shared by the Deepening Extension Project. The primary ramp continues at depth beyond the Deepening Extension Project and is designed to follow the mineralization to the north. The bottom of the new external hoisting shaft that will be built in support of the Deepening Extension Project will be completed to the -1075 Level. Two new panels with 4 production levels each are designed below -1381 Level in support of the Deepening Inferred Project.

For the Deepening Extension Project the same mining method will be employed as the rest of the Pilar UG Mine. A panel height reduction from 35m to 26m will be applied to improve mining recovery and reduce ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsLOM
Copper kt 79
All production numbers are expressed as metal in concentrate.

Operational Metrics:

Metrics
Ore tonnes mined, LOM  ......  Subscription required
Tonnes processed  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

Reserves at October 1, 2020:

CategoryTonnage CommodityGradeContained Metal
Probable 7,432 kt Copper 1.68 % 125 kt
Indicated 7,527 kt Copper 1.86 % 140 kt
Inferred 4,476 kt Copper 2.12 % 94.8 kt

Commodity Production Costs:

CommodityUnitsAverage
C1 cash costs Copper USD  ......  Subscription required *†
* According to 2020 study / presentation. calculated as avg.
† Net of By-Product.

2020 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Total CapEx $M BRL  ......  Subscription required
UG OpEx $M BRL  ......  Subscription required
Processing OpEx $M BRL 86.5
Total OpEx $M BRL  ......  Subscription required
Total Taxes $M BRL  ......  Subscription required
Gross revenue (LOM) $M BRL  ......  Subscription required
Net revenue (LOM) $M BRL  ......  Subscription required
EBITDA (LOM) $M BRL  ......  Subscription required
After-tax Cash Flow (LOM) $M BRL  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of October 1, 2020:
HME TypeQuantity
Jumbo ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 6, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

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

Subscription required - Subscription is required.

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