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Australia
Medcalf Project

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 Location:
102 km SW from Norseman, Western Australia, Australia

  Project Contacts:
Office F, Level 1 1139 Hay Street
PO Box 354
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
Fax(618)-9321-0721
EmailEmail
WebsiteWeb
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  • Overview
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  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Vanadium
  • Titanium
  • Iron
Mining Method
  • Truck & Shovel / Loader
Mine Life6 years (as of Jan 1, 2022)
In 2021, Audalia identified the possibility of producing high titanium lump ore (HTLO) product to be used for blast furnace refractory liner protection. The project scope was updated to reflect a low upfront capital expenditure direct shipping ore operation condensed from a hydrometallurgical facility previously aiming to produce refined titanium and vanadium products. METS were engaged by Audalia to update the PFS based on the revised project scope to produce HTLO product to be shipped from the Esperance port.


Owners

Source: p. 6
CompanyInterestOwnership
Audalia Resources Ltd. 100 % Direct
The Medcalf Project comprises one mining lease (M63/656), two exploration licences (E63/1134 and E63/1855), one general purpose licence (G63/10), and two miscellaneous licences (L63/75 and L63/94). All tenure is owned 100% by Audalia.

Contractors

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Deposit Type

  • Banded iron formation
  • Sedimentary


Summary:

The Medcalf Project lies in the Archaean aged Lake Johnston greenstone belt in the southern portion of the Youanmi Terrane, part of the Yilgarn Craton. This belt is a narrow north-northwest trending belt, approximately 110 km in length. It is located near the south margin of the Yilgarn Craton, midway between the southern ends of Norseman-Wiluna and the Forrestonia-Southern Cross greenstone belts.

The Medcalf Project lies within the Medcalf Layered Sill, which is a flat lying Igneous body which has intruded parallel to the enclosing volcanic strata basalt, prior to regional metamorphism.

Five separate zones of vanadium-titanium-iron mineralisation have been identified within the project area and named the Vesuvius, Fuji, Pinatubo, Kilimanjaro and Egmont prospects. In the Medcalf deposit vanadium, titanium and iron have been concentrated in a pyroxenite unit, which has subsequently been enriched in these metals through weathering and regolith formation.

In the mineralised areas the magnetite-rich sequence is deeply weathered, with +60m of saprolite showing vertical zonation of weathering minerals due to progressive weathering. The fully developed lateritic weathering profile is divisible into four zones. Starting from the top, they are lateritic residuum, mottled zone, saprolite and saprock. All the vanadium-titanium-iron mineralisation lies in the saprolitic zone.

The geological interpretation has divided the Medcalf Project into t ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The project will initially comprise three open pits (Egmont, Vesuvius and Fuji), a processing plant, private haul road, road train transfer area and associated infrastructure such as laydown areas, gravel pits, groundwater bores, workshops and an accommodation village. The three pits will be developed to a maximum depth of around 50 m below surface with no expected dewatering requirements.

According to 2022 PFS pits design will have following parameters:
- Bench Height - 4.0m;
- Berm width 4.0m;
- Batter angle - 85°;
- Crest to crest 42.60°.

For Vesuvius-Fuji 1 the ramp was designed running from east to west with the final lower stage of the ramp turning towards the north. The ramp utilised the flat dipping nature of the pit wall to minimise waste mining in accessing the targeted ore.

For Vesuvius-Fuji 2 the ramp design follows a west to east direction. All the ramps are 25m in width and have a 1 in 10 (10%) gradient.

Following completion of the pit designs, material was reported for use in the production schedule using an 8%TiO2 cut-off grade to achieve a target 12% TiO2 feed grade.

The schedule mines at a constant mining rate of 0.8Mt per quarter (3.2Mtpa). This mining rate is maintained throughout the mine life until the final two quarters in year 6.

The schedule commences with the lower strip ratio pits of Vesuvius-Fuji 1 and Egmont with mining commencing in Vesuvius-Fuji 2 in year 2.


Crushing and Grinding
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Processing

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Summary:

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Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Titanium Oxide in ore t 666,557
Iron Oxide in ore t  ......  Subscription required
Iron Ore Lump t  ......  Subscription required

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
Annual production capacity  ......  Subscription required
Annual processing rate  ......  Subscription required
Annual mining rate  ......  Subscription required
Annual ore mining rate  ......  Subscription required
Mining scale, tpd  ......  Subscription required
* According to 2022 study.
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Reserves at March 31, 2022:
Mineral Resource estimate using a 6%TiO2 cut-off grade.

CategoryTonnage CommodityGrade
Indicated 15 Mt Vanadium
Indicated 15 Mt Titanium
Indicated 15 Mt V2O5 0.6 %
Indicated 15 Mt Titanium dioxide 11.01 %
Indicated 15 Mt Fe2O3 56.4 %
Inferred 10.6 Mt Vanadium
Inferred 10.6 Mt Titanium
Inferred 10.6 Mt V2O5 0.4 %
Inferred 10.6 Mt Titanium dioxide 8.54 %
Inferred 10.6 Mt Fe2O3 43 %
Total Resource 25.7 Mt Vanadium
Total Resource 25.7 Mt Titanium
Total Resource 25.7 Mt V2O5 0.52 %
Total Resource 25.7 Mt Titanium dioxide 9.98 %
Total Resource 25.7 Mt Fe2O3 50.9 %

Commodity Production Costs:

CommodityUnitsAverage
Total cash costs Iron Ore USD  ......  Subscription required&nbs
Assumed price Iron Ore USD  ......  Subscription required&nbs
* According to 2022 study / presentation.
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Operating Costs:

Units2022
Total operating costs ($/t milled) AUD 62.6 *
* According to 2022 study.

2022 Study Costs and Valuation Metrics :

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

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 16, 2022
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Staff:

Total WorkforceYear
Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Pre-Feasibility Study Report 2022
................................... Subscription required 2020
Press Release 2016
Press Release 2014
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