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Australia
TMG Tin (Mount Garnet Tin) Project

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 Location:
6 km E from Mount Garnet, Queensland, Australia

  Project Contacts:
Suite M3A, The Pier, Pier Point Road
Cairns
Queensland, Australia
4870
Phone  ...  Subscription required
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageFeasibility
Mine TypeOpen Pit
Commodities
  • Tin
  • Fluorine
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Mine Life9 years (as of Jan 1, 2013)
Mount Garnet Tin project is now TMG Tin Project.

In 2013, the previous owner, Consolidated Tin Mines Limited, completed a Pre-Feasibility Study for the Mt Garnet Tin Project.

Tablelands Mining Group continued exploration of the Project.


Owners

Source: p. 1
CompanyInterestOwnership
Tablelands Mining Group 100 % Indirect
In 2021, the Consolidated Tin Mines Limited (now Aurora Metals Ltd.) sold the Project to privately held Tablelands Mining Group.

Contractors

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Deposit Type

  • Skarn


Summary:

Mt Garnet Regional Geology
The Mount Garnet tin deposits are hosted in granite-intruded sediments with associated contact metamorphism and metasomatism.

The mineralisation including cassiterite, magnetite and fluorite, is contained within tabular skarn lenses that formed within carbonate-rich sediments.

The Silurian Chillagoe Formation, characterised by limestone – marble, chert, basic volcanics and siliciclastics, lies along the western margin of the Hodgkinson Province. Limestones of this formation are favourable hosts for skarn-associated tin mineralisation at Mount Garnet.

Gillian Geology
The Gillian tin deposit occurs as skarn lenses developed in altered limestone beds of the Chillagoe Formation which has been intruded by granites. The lenses are tin-iron skarns consisting of massive magnetite and goethite with fine grained cassiterite, the most common tin bearing mineral.

The deposit strikes north-south and has the dimensions 850 m north-south, 880 m east-west and 250 m vertically. In the western part of the deposit, mineralisation occurs as a number of steeply ipping tabular lenses, while mineralisation in the eastern part occurs, primarily, as a single lens.

Pinnacles Geology
The Pinnacles tin deposit occurs as a series of irregular skarn lenses developed in altered limestone beds of the Chillagoe Formation which has been intruded by granites. The deposit is a tin-fluorine-iron skarn consisting of t ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining method will be by open cut with an average mining cost per tonne of A$24.25/t. Pit designs were based on Whittle optimisation shells generated using preliminary operating cost estimates. Mine development and operation is reflected as contractor mining. Ore will be transported to the Mt Garnet concentrator subject to final agreement with Snow Peak.


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Tin Metal in concentrate t 2,94426,495
Fluorine Concentrate kt  ......  Subscription required  ......  Subscription required
Iron Ore Concentrate kt  ......  Subscription required  ......  Subscription required

Operational Metrics:

Metrics
Annual mining capacity 1 Mt of ore *
Ore tonnes mined, LOM 8.4 Mt *
Tonnes milled, LOM 8.4 Mt *
Annual milling capacity 1 Mt *
Annual milling rate 0.93 Mt *
Annual ore mining rate 0.93 Mt *
* According to 2013 study.

Reserves at June 30, 2018:
The Mineral Resources as at 30th June 2019 at Mount Garnet Tin Projec are unchanged from June 30, 2018

CategoryTonnage CommodityGrade
Measured 1,200,000 t Tin 0.86 %
Measured 1,200,000 t Iron 34.2 %
Indicated 7,894,000 t Tin 0.36 %
Indicated 7,894,000 t Iron 22.21 %
Indicated 5,461,000 t Fluorine 6.28 %
Inferred 2,966,000 t Tin 0.3 %
Inferred 2,966,000 t Iron 22.37 %
Inferred 1,575,000 t Fluorine 4.14 %
Total Resource 12,049,000 t Tin 0.4 %
Total Resource 12,049,000 t Iron 23.44 %
Total Resource 7,035,000 t Fluorine 5.8 %

Commodity Production Costs:

CommodityUnits
Total cash costs Tin AUD 13,917 / t *†  AUD
Assumed price Fluorine AUD 400 / t *  AUD
Assumed price Tin AUD 24,000 / t *  AUD
Assumed price Iron Ore AUD 150 / t *  AUD
* According to 2013 study / presentation.
† Net of By-Product.
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2013 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M AUD  ......  Subscription required
Net revenue (LOM) $M AUD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M AUD  ......  Subscription required
Pre-tax NPV @ 8% $M AUD  ......  Subscription required
After-tax NPV @ 10% $M AUD  ......  Subscription required
After-tax NPV @ 8% $M AUD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 14, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Press Release 2013
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