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Australia
Galalar Project

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 Location:
17 km E from Hope Vale, Queensland, Australia

  Project Contacts:
Unit 8, 55-61 Holdsworth Street
PO Box 382
Coorparoo
Queensland, Australia
4151
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Silica
Mining Method
  • Truck & Shovel / Loader
Mine Life23.5 years (as of Jan 1, 2021)
Galalar is one of the world’s purest silica sands projects.


Owners

Source: p. 1
CompanyInterestOwnership
Diatreme Resources Ltd. 87.5 % Indirect
Hope Vale Congress Aboriginal Corporation holds a 12.50% interest in the Galalar project as the representative body for the traditional owners of the area.

Sibelco has become a major shareholder in Diatreme Resources Ltd.

In addition, Sibelco and Diatreme have agreed a joint venture to develop Diatreme’s emerging Galalar Silica Project and Northern Resource Project, supported by an investment from Sibelco of $35 million, split into two tranches of $11 million and $24 million respectively. The investment is subject to approval by Australia’s Foreign Investment Review Board (FIRB).

The investment quantum and resultant 26.8% fully diluted interest are based upon progressive group silica project valuations of $110m and $160m respectively.

Contractors

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Deposit Type

  • Mineral sands


Summary:

The Galalar Deposit is a large surface deposit of overlying sand dunes that is part of the Quaternary age Cape Flattery-Cape Bedford dunefield complex. The deposit is dominated by clean high purity >98.5% silica (quartz) which is principally white, cream and light grey in colour, but also with variably dispersed yellow, orange and brown overtones.

The Galalar Deposit consists of two major paralleling dunes, nominally named Galalar East and Galalar West. The deposit extends approx. 3.4km long by 1.2km wide and ranges in vertical thickness from 6m to 32m. The dunes are elongate southeast to northwest and are densely but shallowly vegetated with topsoil to approx. 0.3m depth. The dunes are clearly defined on their long sides and by lower topography. The base of exploitable sand is defined by the water table and/or intersection with the basement consisting of either ‘B1’ orange-brown coloured sand horizon (“coloured sands”) or the clay basement of older weathered bedrock.

The silica sand is consistently high grade throughout, >98.5% SiO2, with variable but minor proportions of Al2O3, Fe2O3 and TiO2 due to the presence of minor clay, iron oxides and heavy minerals.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining at GSSP will utilise a loader feeding to trommel, then slurry pumping to processing plant. A dozer will be utilised for progressive vegetation and topsoil stripping along with rehabilitation. Mining processes minimise iron contamination to the exceptionally low iron sand product. The PFS has considered a mix of leased, owner managed fleet will be the most suitable option for the GSSP. Equipment selected is considered common for sand mining operations and similar to plant operated by local earthworks contractors and quarry operators. Industry standard training will be sufficient for operators to be proficient in operating the selected mobile fleet. The MAP is a combination of a mobile hopper-feeder unit which discharges the mined ore at a controlled rate into a mobile screening and slurrying unit fitted with a slurry pump suitable for transferring the slurry to the SPP. The MAP will be fed by a wheel loader.

The hopper-feeder unit consists of a tipping grizzly over a hopper and belt feeder which controls the rate of ore discharge onto a transfer conveyor. The ore from the transfer conveyor is wet screened in a trommel fitted with 4mm aperture polyurethane screen panels and water sprays to assist screening. A short conveyor transports the 4mm oversize material to a stockpile away from the mining unit. The screened ore particles smaller than 4mm fall into a sump below the trommel where sufficient water is added to pump the slurry to the processing plant.
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Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. Annual
Silica Mt 1.3

Operational Metrics:

Metrics
Ore tonnes mined, LOM  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
Annual processing capacity  ......  Subscription required
Annual ore mining rate  ......  Subscription required
* According to 2021 study.
Subscription required - Subscription is required.

Reserves at September 13, 2021:
A silica grade cut-off of 98.5% SiO2 is robust and was applied as the cut-off grade for the resource modelling and Mineral Resource Estimate for all JORC reporting levels.

CategoryTonnage CommodityGrade
Probable 32.5 Mt Silica 99.2 %
Measured 43.12 Mt Silica 99.21 %
Indicated 23.12 Mt Silica 99.16 %
Inferred 9.22 Mt Silica 99.1 %
Total Resource 75.46 Mt Silica 99.18 %

Commodity Production Costs:

CommodityAverage
C1 cash costs Silica  ......  Subscription required&nbs
Assumed price Silica  ......  Subscription required *
* According to 2021 study / presentation.
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Operating Costs:

Units2021
Total operating costs ($/t milled) AUD 26.9 *
* According to 2021 study.

2021 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Sustaining CapEx $M AUD  ......  Subscription required
Total CapEx $M AUD  ......  Subscription required
Total OpEx $M AUD  ......  Subscription required
Royalty payments $M AUD  ......  Subscription required
Net revenue (LOM) $M AUD  ......  Subscription required
EBITDA (LOM) $M AUD  ......  Subscription required
Pre-tax NPV @ 8% $M AUD  ......  Subscription required
After-tax NPV @ 8% $M AUD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-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 6, 2022
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Staff:

Total WorkforceYear
Subscription required 2021

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2022
Quarterly Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Subscription required - Subscription is required.

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