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Australia
Glenburgh Project

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 Location:
250 km E from Carnarvon, Western Australia, Australia

  Project Contacts:
Level 1, 41-47 Colin Street
PO Box 1449
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
Fax+61 8 9481 0411
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
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Overview

StageFeasibility
Mine TypeOpen Pit & Underground
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life4 years (as of Jan 1, 2013)


Owners

Source: p. 32,132
CompanyInterestOwnership
Gascoyne Resources Ltd. 100 % Direct

Contractors

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Deposit Type

  • Metamorphic hosted


Summary:

Regionally the project lies in the southern Gascoyne Province adjacent to the northwest margin of the Yilgarn Craton. Geologically the province has been described as the high-grade metamorphic core zone of the Early Proterozoic Capricorn Orogen. The region comprises granitoid intrusions, gneiss domes, metamorphosed sedimentary rocks and remobilised Archaean basement gneiss.

The project overlies an east-north-east trending sequence of highly metamorphosed Lower Proterozoic rocks comprising variably quartz feldspar-biotite-garnet-magnetite gneiss, amphibolite, quartzite and calc-silicate. A prominent crustal scale north-east trending fault, the Deadman Fault, bisects the project area.

Gold mineralisation at Glenburgh was first detected by Helix Resources in 1994 from gold anomalism in regional stream sediment sampling and subsequent soil sampling which outlined a 20km long anomalous trend. Drilling principally by Helix and since 2010, Gascoyne Resources has discovered and extended a series of gold deposits with JORC Resources. Gold mineralisation at Glenburgh is somewhat enigmatic as a result of the high grade metamorphic host rocks; gold occurs in quartz- feldspar- biotite-garnet gneiss with a general observation of higher grades occurring in silica “flooded” zones.


Mining Methods

  • Truck & Shovel / Loader


Summary:

Upon completion of the Glenburgh mining study, Kenmore Mine Consulting completed a number of conceptual mine schedules (for both open cut and underground). The aim of the schedules was to complete the mining in the most productive manner possible, while allowing selective ore blending strategies. The selected schedule allows for two excavators mining the open pits for approximately two years, then one excavator for the next year, while the underground is developed and mined in two years commencing in month 27 of the schedule.

In addition to the open cut optimisations and resulting mine designs, a conceptual underground development has also been designed for the high grade zones below the Zone 126 open pit. An underground mine design has been completed that results in an underground mining inventory of 426,000t @ 4.6 g/t. This adds significantly to the overall project mining inventory, in the final two years of processing.


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsAvg. AnnualLOM
Gold oz 73,000316,000

Operational Metrics:

Metrics
Ore tonnes mined 4.9 Mt *
Stripping / waste ratio 8.1 *
Annual processing rate 1.2 Mt *
* According to 2013 study.

Reserves at December 18, 2020:
Mineral Resource statement for in-situ resources above 0.25g/t Au for open pit and above 2.0g/t Au for underground.

CategoryTonnage CommodityGradeContained Metal
Indicated 13.5 Mt Gold 1 g/t 430.7 koz
Inferred 2.8 Mt Gold 0.9 g/t 79.4 koz
Total Resource 16.3 Mt Gold 1 g/t 510.1 koz

2013 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M AUD  ......  Subscription required
Initial CapEx $M AUD  ......  Subscription required
Sustaining CapEx $M AUD  ......  Subscription required
Total CapEx $M AUD  ......  Subscription required
Net revenue (LOM) $M AUD  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 25, 2022
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Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Technical Report 2013
Corporate Presentation 2011
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