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Australia

Galalar Silica Project

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Categories

Overview

Mine TypeOpen Pit
StagePermitting
Commodities
  • Silica
Mining Method
  • Dry mining
Mine Life... Lock
SnapshotOne of the largest high-purity silica exploration land packages in Australia, the Galalar Silica Sand Project (GSSP) covers an area of 542 sq km in Queensland’s Eastern Cape York region, around 200km north of Cairns.

A 2021 Pre-Feasibility Study showed the value of the project, with an estimated post-tax net present value (NPV) of A$358 million.

However, Diatreme is currently focused on its Northern Silica Project, with the GSSP remaining a key asset subject to future development.

Galalar Project anticipated to feed future Northern Silica Project production.

Owners

SourceSource
CompanyInterestOwnership
Sibelco Group 26.8 % Indirect
Diatreme Resources Ltd. 73.2 % Indirect
Global material solutions group Sibelco is Diatreme’s development partner on its Queensland silica projects portfolio. Sibelco has completed a two-tranche investment of $35 million taking its total project interest to 26.8%, with the balance (73.2%) held by Diatreme.

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.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

Milling equipment has not been reported.

Processing

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Production

CommodityUnitsAvg. Annual
Silica Mt 1.3

Operational metrics

Metrics
Hourly mining rate  ....  Subscribe
Hourly processing rate  ....  Subscribe
Annual ore mining rate  ....  Subscribe
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Ore tonnes mined, LOM  ....  Subscribe
Tonnes processed, LOM  ....  Subscribe
* According to 2021 study.

Production Costs

CommodityAverage
C1 cash costs Silica  ....  Subscribe
Assumed price Silica  ....  Subscribe
* According to 2021 study / presentation.

Operating Costs

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

Project Costs

MetricsUnitsLOM Total
Sustaining CapEx $M AUD  ......  Subscribe
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Royalty payments $M AUD  ......  Subscribe
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EBITDA (LOM) $M AUD  ......  Subscribe
Pre-tax NPV @ 8% $M AUD  ......  Subscribe
After-tax NPV @ 8% $M AUD  ......  Subscribe
Pre-tax IRR, %  ......  Subscribe
After-tax IRR, %  ......  Subscribe
Pre-tax payback period, years  ......  Subscribe

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 20, 2024
....................... Subscription required ....................... Subscription required Subscription required Nov 20, 2024

Total WorkforceYear
...... Subscription required 2021

Aerial view:

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