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Ghana
Ewoyaa Project

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 Location:
100 Km W from Accra, Ghana

  Project Contacts:
Level 33, Australia Square, 264 George Street
Sydney
New South Wales, Australia
2000
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EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Spodumene
  • Feldspar
  • Lithium
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life12.5 years (as of Jan 1, 2022)
Ewoyaa will be one of the world's most promising spodumene projects.
Latest NewsPiedmont Lithium and LG Chem Sign Equity Investment and Binding Offtake Agreements     February 16, 2023


Owners

Source: p. 8,42
CompanyInterestOwnership
Piedmont Lithium Ltd. 9.91 % Indirect
Atlantic Lithium Ltd. 100 % Indirect
Whilst the asset is currently wholly owned by Atlantic Lithium Limited, Piedmont Lithium Inc. can earn up to half the asset through the funding agreement, whilst the Government of Ghana has the right to a 10% free carry once in production.

Piedmont is earning a 50% interest in Atlantic Lithium’s spodumene projects in Ghana, and owns a 9.9% stake in the parent company (AIM: ALL). Atlantic Lithium’s flagship is the Ewoyaa Project.

Contractors

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Deposit Type

  • Pegmatite


Summary:

The Project area lies within the Birimian Supergroup, a Proterozoic volcano-sedimentary basin located in Western Ghana. The Project area is underlain by three forms of metamorphosed schist; mica schist, staurolite schist and garnet schist. Several granitoids intrude the basin metasediments as small plugs. These granitoids range in composition from intermediate granodiorite (often medium grained) to felsic leucogranites (often coarse to pegmatoidal grain size), sometimes in close association with pegmatite veins and bodies.

Pegmatite intrusions generally occur as sub-vertical dykes with two dominant trends: either striking north-northeast (Ewoyaa Main) and dipping sub-vertically to moderately southeast to east-southeast, or striking west-northwest (Abonko, Kaampakrom and Ewoyaa Northeast) dipping sub-vertically northeast. Pegmatite thickness varies across the Project, with thinner mineralised units intersected at Abonko and Kaampakrom between 4m and 12m; and thicker units intersected at Ewoyaa Main between 30m and 60m, and up to 100m at surface.

The Project area has two clearly defined domains or material types of spodumene bearing lithium mineralisation. IronRidge has termed these material types as Pegmatite Type P1 and Pegmatite Type P2; viz:
- P1: Coarse grained spodumene material, the dominant spodumene bearing pegmatite encountered to date, exhibiting very coarse to pegmatoidal, euhedral to subhedral spodumene crystals composing 20 to 40% of th ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Conventional open pit mining is considered as the preferred mining method for the Project since the ore presents near surface and there is space to construct waste dumps. A contract mining operation is proposed given the abundance of experienced well established local contractors in Ghana.

The PFS assumes that all material will require some form of drill and blast. Open pit mining will utilise three main 120t excavators and 90t dump trucks supported by an appropriate ancillary fleet.

This equipment matches the scale of the operation and the mining environment across the distinct mining areas.

Effectively five mining areas including fourteen individual ultimate pits will be developed. A bench height of up to 10m, excavated in 2.5m flitches, is proposed to achieve acceptable levels of dilution and ore loss and to match the excavator size. Vegetation will be cleared and grubbed prior to topsoil stripping and later used to cover the topsoil stockpiles. Topsoil will be stockpiled and retained for later rehabilitation at the site.

The operation will employ a strategy of partial direct tipping with approximately 60% of crusher feed coming from rehandling run of mine (“ROM”) ore. The lower recovery/grade long term stockpiles, predominantly comprising P2 material, will be rehandled and fed to the plant after the priority P1 materials have been processed, or if ore supply interruptions are experienced from the mine.

The schedule i ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Spodumene Concentrate kt 2553,181
Feldspar Concentrate kt  ......  Subscription required  ......  Subscription required
Lithium Ore t  ......  Subscription required  ......  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
Tonnes processed, LOM  ......  Subscription required
Annual processing capacity  ......  Subscription required
Annual mining rate  ......  Subscription required
Annual ore mining rate  ......  Subscription required
* According to 2022 study.
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Reserves at September 12, 2022:
Mineral Resource Estimate at 0.5% Li2O Cut-off.

CategoryTonnage CommodityGradeContained Metal
Probable 18.9 Mt Li2O 1.24 %
Probable 18.9 Mt Lithium 109 kt

Commodity Production Costs:

CommodityUnitsAverage
Credits (by-product) Spodumene USD  ......  Subscription required&nbs
All-in sustaining costs (AISC) Spodumene USD  ......  Subscription required *†
C1 cash costs Spodumene USD  ......  Subscription required *†
Assumed price Feldspar USD  ......  Subscription required&nbs
Assumed price Spodumene USD  ......  Subscription required&nbs
* According to 2022 study / presentation.
† Net of By-Product.
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Operating Costs:

Units2022
OP mining costs ($/t mined) USD 3.56 *
Processing costs ($/t milled) USD  ......  Subscription required
G&A ($/t milled) USD  ......  Subscription required
* According to 2022 study.
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2022 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Sustaining CapEx $M USD  ......  Subscription required
Working capital $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
OP OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 194.1
G&A costs $M USD 71.6
Total OpEx $M USD  ......  Subscription required
Mining Taxes $M USD  ......  Subscription required
Income Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
EBITDA (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 8% $M USD  ......  Subscription required
After-tax NPV @ 8% $M USD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Proposed Heavy Mobile Equipment as of September 22, 2022:
HME TypeSizeLeased or
Contractor
Excavator 120 t Leased
....................... Subscription required ....................... Subscription required Leased
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 30, 2022
....................... Subscription required ....................... Subscription required Subscription required Jan 30, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 30, 2023
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Corporate Presentation 2022
Pre-Feasibility Study Report 2022
Press Release 2022
Year-end Mineral Reserves 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
Subscription required - Subscription is required.

News:

NewsDate
Piedmont Lithium and LG Chem Sign Equity Investment and Binding Offtake Agreements February 16, 2023
Atlantic Lithium Limited Announces Ewoyaa Mineral Resource Increases to 35.3Mt February 1, 2023

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