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Australia
Mount Garnet Mine

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 Location:
109 km SW from Cairns, Queensland, Australia

  Regional Office:
395 Lake Street
Cairns North
Queensland, Australia
4870
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Fax+61-(0)-7-4027-9429
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Zinc
  • Lead
  • Copper
  • Gold
  • Silver
Mining Method
  • Longhole open stoping
Production Start...
The Mt Garnet Processing Plant and associated mines, Surveyor Mine and Mt Garnet Mine were placed in temporary care and maintenance in October 2021 whilst additional drilling is undertaken to provide additional ore.


Owners

Source: p. 1
CompanyInterestOwnership
Aurora Metals Ltd. (operator) 100 % Indirect
Aurora Metals Limited was originally called Consolidated Tin Mines Limited (CSD). CSD purchased 100% of the project from Snow Peak Mining Pty Ltd in April 2016 and continued as owner/operator.

November 1, 2022 - Aurora Metals Limited (Aurora or the Company) advises the company has engaged advisors to seek interest in a potential sale of the entire company as an operating enterprise potentially on a walk-in walk-out basis.

Pursuant to the proposed sale process, the Company will seek expressions of interest in the form of non-binding offers, the time for receipt of which will end before Christmas 2022 . After this, the Company will engage with a shortlist of preferred bidders who will be given an opportunity to undertake in depth due diligence, with a deadline for them to present binding offers to the Company in the first quarter of 2023.

Contractors

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Deposit Type

  • Skarn


Summary:

The Mt Garnet base metal mineralisation occurs in a garnet-pyroxene-amphibole skarn-altered, northerly-trending, fossiliferous limestone and limey siltstone unit that hosts sphalerite-rich mineralisation. The skarn zone dips sub-vertically, is typically 30 metres to 60 metres wide, and extends beyond 550 metres below surface, which is the current limit of drill investigations.

High-grade massive and semi-massive sphalerite-rich mineralisation (notionally >10% Zn) is largely confined to two distinct, sub-parallel, shallow to moderately north-plunging “shoots”, termed the South Shoot and the North Shoot.


Mining Methods

  • Longhole open stoping


Summary:

Mining operations recommenced at the Mount Garnet mine in July 2017, with the mining of remnant ore from the existing Mount Garnet underground mine in parallel with new development to the newly discovered Mount Garnet Deeps deposit located 70m south of the Mount Garnet mine. The Company commenced decline development from existing workings at the Mount Garnet underground mine to access the Mount Garnet Deeps deposit. The first extraction of ore from the Mount Garnet Deeps deposit commenced in December 2018.

Current mining activity is occurring at both the Mt Garnet Mine and the Dry River South (DRS) Mine at the Surveyor Project.

Development of the new Mt Garnet Deeps decline continued during the last quarter of FY2019 in parallel with ore drive development. Ore from the old Mt Garnet Mine continued with small quantities of remnant ore from the upper levels.

Increasing quantities of development ore will continue to be mined from the Mt Garnet Deeps deposit with stope production commenced in the first quarter of FY2020.

Extraction of Mt Garnet Deeps underground employs Longhole Open Stoping as the mining method with 20 m to 25 m level spacing. Development is achieved using CSD owned Atlas Copco M2D twin boom Jumbos. Longhole production drilling is achieved using CSD owned Sandvik DL432i Production Drill. Teleremote loading in stope is done by CSD CAT R1700 and R2900 loaders and ore is hauled to surface using CSD CAT AD55 articulated dump trucks.


Crushing and Grinding
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Processing

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Summary:

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Production:
Since 2018 financial year (which started on July 1, 2017), the Consolidated Tin Mines Ltd. is provided combined data for Dry River South and Mount Garnet mines. Mining operations recommenced at the Mount Garnet mine in July 2017 and at the Dry River South - in May 2018.

CommodityProductUnits20202019201820162015
Zinc Metal in concentrate M lbs  ......  Subscription required *  ......  Subscription required *6.9 *
Lead Metal in concentrate M lbs  ......  Subscription required*  ......  Subscription required*
Copper Metal in concentrate M lbs  ......  Subscription required*  ......  Subscription required*  ......  Subscription required*
Zinc Concentrate kt 37*46*
Lead Concentrate kt  ......  Subscription required*  ......  Subscription required*
Copper Concentrate kt  ......  Subscription required*  ......  Subscription required*
* Combined production for Mount Garnet Mine and Dry River South (Surveyor UG) Mine
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Operational Metrics:

Metrics20202019201820162015
Tonnes processed  ......  Subscription required189,069 t111,348 t
Annual ore mining rate  ......  Subscription required200 kt
Ore tonnes mined  ......  Subscription required357,489 t103,950 t
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Reserves at August 30, 2019:
The resources are reported above a 2% Zinc cut-off grade.

CategoryTonnage CommodityGradeContained Metal
Indicated 416,000 t Zinc 4.32 % 18,000 t
Indicated 416,000 t Lead 0.22 % 900 t
Indicated 416,000 t Copper 0.06 % 300 t
Indicated 416,000 t Silver 12.99 g/t 174 koz
Inferred 308,000 t Zinc 3.73 % 11,500 t
Inferred 308,000 t Lead 0.18 % 500 t
Inferred 308,000 t Copper 0.1 % 300 t
Inferred 308,000 t Silver 17.4 g/t 172 koz
Total Resource 724,000 t Zinc 4.07 % 29,400 t
Total Resource 724,000 t Lead 0.2 % 1,400 t
Total Resource 724,000 t Copper 0.08 % 600 t
Total Resource 724,000 t Silver 14.87 g/t 346 koz



Heavy Mobile Equipment:

Mine Management:

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required Nov 7, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 7, 2022
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Corporate Filings & Presentations:

DocumentYear
Press Release 2022
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Press Release 2018
Annual Report 2017
Annual Report 2016
Annual Report 2016
Press Release 2016
Annual Report 2015
Press Release 2015
Press Release 2013
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Subscription required - Subscription is required.

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