• 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
Australia
Abra Project

This page is not tailored to
devices with screen width under 750 px.
 Location:
178 km SW from Newman, Western Australia, Australia

  Project Contacts:
Level 2, 1100 Hay Street
PO Box 297
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
EmailEmail
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 Australia
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • 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

StageConstruction
Mine TypeUnderground
Commodities
  • Lead
  • Silver
Mining Method
  • Longhole open stoping
  • Room-and-pillar
  • Paste backfill
Production Start...
Mine Life13 years (as of Jan 1, 2022)
The Abra base metals deposit (Pb-Ag-Cu-Au) is one of the largest, undeveloped lead deposits in the world.

Galena Mining Ltd. provided the life of mine averages based on the most recently updated mine plan incorporating updated mine designs and the latest cost information.
An 8% increase in mine and mill production is offset by a 6% reduction in lead grade to produce slightly less metal in direct comparison to the 2019 Feasibility Study.
Latest NewsGalena Mining wraps up Abra Base construction     January 11, 2023


Owners

Source: p. 2
CompanyInterestOwnership
Toho Zinc Co. Ltd. 40 % Indirect
Galena Mining Ltd. 60 % Indirect
Abra Mining Pty Ltd. (operator) 100 % Direct
Toho will inject a further A$70M into AMPL prior to construction of the Project, resulting in AMPL being owned 60% by Galena and 40% by Toho.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Replacement
  • Vein / narrow vein
  • Sediment-hosted


Summary:

Abra is a world class base metals deposit with a globally significant resource of lead-silver which transitions into gold- copper rich mineralisation at depth.

The Abra deposit lies within sediments of the Proterozoic Edmund Group. Abra is a base metal replacement-style deposit hosted by sediments. The primary economic metal is lead. Silver, copper, zinc and gold are also present but are of much lower tenor.

The deposit can be divided into two main parts. The upper “Apron” zone comprises strataform massive and disseminated lead- sulphides (galena) and minor copper sulphides (chalcopyrite) within a highly altered sequence of clastic and dolomitic sediments. Alteration products include jasperlitic rich sediments (the “Red Zone”) and a distinctive stratiform zone of hematatite-magnetite alteration (the “Black Zone”. The Apron zone extends for 1,000m along strike, 700m down dip and dips gently south.

The “Core” zone underlies the Apron and comprises an elongate funnel shaped body of hydrothermal breccias, veining and intense alteration overprinting gently south dipping sediments. The veining and breccia zones in the Core typically dip steeply to the north. High grade lead sulphide mineralisation is predominantly hosted in intensely veined zones. High grade zinc sulphide mineralisation (sphalerite) is found in the central parts of the Core. Copper (chalcopyrite) and gold mineralisation is sporadically found throughout the upper parts of the Cor ........


Mining Methods

  • Longhole open stoping
  • Room-and-pillar
  • Paste backfill


Summary:

Underground mining using long-hole open stoping has been selected as the primary mining method, with paste backfill. However, certain shallow dipping areas within the Apron Zone will be mined as room and pillar. Ground conditions are expected to allow relatively large stopes to be employed.

Using available geotechnical data, an overbreak of less than 0.5 metres was estimated and a dilution of such was applied to all hangingwall stopes. The grade of dilution hangingwall material for stope shapes was also estimated (Apron Zone hangingwall dilution grade 4.8% lead and Core Zone hangingwall dilution grade 4.2% lead). This confirmed the mining grade factors considering the reasonable grade of dilution material. Pillars were not designed but an allowance for Ore loss in pillars was included in the stope recovery factor. Consequently, a range of stope recoveries were applied for different mining methods. These range from 75% in the room and pillar areas, up to 95% for long-hole open stoping areas, where no pillars are planned. Based on this, the Ore Reserve estimate assumes an average overall stope recovery of 85%. Given the relatively high grade of dilution hangingwall material, an overall mining dilution factor of 5% was applied. Minimum mining width was assumed to be 5 metres.


Crushing and Grinding
Source: Subscription required


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. Annual
Lead kt 93
Silver koz  ......  Subscription required
All production numbers are expressed as metal in concentrate.

Operational Metrics:

Metrics
Annual milling capacity  ......  Subscription required
* According to 2022 study.
Subscription required - Subscription is required.

Reserves at April 15, 2021:
Mineral Resource estimate at a 5% lead cut-off grade.

CategoryTonnage CommodityGrade
Indicated 16.9 Mt Lead 7.4 %
Indicated 16.9 Mt Silver 17 g/t
Inferred 17.5 Mt Lead 7 %
Inferred 17.5 Mt Silver 15 g/t
Total Resource 34.5 Mt Lead 7.2 %
Total Resource 34.5 Mt Silver 16 g/t

Commodity Production Costs:

CommodityUnitsAverage
Credits (by-product) Lead USD  ......  Subscription required&nbs
C1 cash costs Lead USD  ......  Subscription required *†
Assumed price Lead USD  ......  Subscription required&nbs
* According to 2022 study / presentation.
† Net of By-Product.
Subscription required - Subscription is required.



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 16, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 16, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 16, 2022
....................... Subscription required ....................... Subscription required Subscription required Sep 16, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
Mine Operations Plan 2022
Press Release 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Press Release 2018
Subscription required - Subscription is required.

News:

NewsDate
Galena Mining wraps up Abra Base construction January 11, 2023

Subscription required - Subscription is required.

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