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Cambodia
Okvau Mine

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 Location:
233 km NE from Phnom Penh, Cambodia

  Regional Office:
1110 Hay Street
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
Fax+61-8-6243-0032
EmailEmail
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life7 years (as of Jan 1, 2022)
On 21 September 2021 the Emerald Resources NL announced that the successful commissioning and commercial operations at Okvau Gold Mine.


Owners

Source: p. 6, 107
CompanyInterestOwnership
Emerald Resources NL 100 % Indirect
Emerald, through its wholly owned Cambodian subsidiary company, Renaissance Minerals (Cambodia) Limited, holds a 100% interest in the Okvau project.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Intrusion related


Summary:

The Okvau Deposit is largely hosted in a Cretaceous diorite intrusion emplaced within an upper Triassic metasedimentary host rock package. Gold mineralisation is contained in a north-east trending fracture set in a narrow off-shoot or apophyses from a larger diorite intrusion however extends beyond the diorite contact into the metasediments.

The Okvau deposit is interpreted as an “intrusion-related gold system”. It is hosted mostly in Cretaceous age diorite and, to a lesser extent, in surrounding hornfels (metamorphosed, fine-grained clastic sediments). Gold mineralization is hosted within a complex array of sulphide veins, which strike northeast to east-west, and dip at shallow to moderately steep angles, to the south and southeast. Mineralisation is structurally controlled and mostly confined to the diorite. The highest grade intersections generally occur at the diorite-hornfels contact.

Gold mineralisation is concentrated along a network of brittle/ductile shears and arsenopyrite-rich sulphide veins. The mineralized shears typically comprise 10 to 50 metre wide core of strongly altered, fractured, and/or sheared rock locally with a weak planar fabric, surrounded by 0.5 to 2 metre wide less intensely altered halos which retain relict diorite texture. Variably deformed pyrrhotite, arsenopyrite and/or pyrite-rich layers up to 10 metres wide also commonly occur in the core of the shears.

The greater width of the alteration haloes around the she ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Okvau Deposit will be mined via conventional open pit mining methods from a single pit which will be mined in stages to maintain a relatively constant mining rate whilst providing adequate ore for processing at consistent ore grades. Mining will be undertaken by drilling and blasting ore and waste with load and haul using mining contractors. The proposed core mining fleet is made up of 120 tonne class excavators and 91 tonne class mine haul trucks.

The final pit design was prepared to enable practical and efficient access to each bench and took into consideration the geotechnical design criteria. The final pit design has approximate dimensions of 650 metres by 600 metres to a maximum depth of 350 metres.


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits20232022Avg. Annual (Projected)LOM (Projected)
Gold oz  ......  Subscription required ^  ......  Subscription required106,000762,000
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.

Operational Metrics:

Metrics2022
Ore tonnes mined  ......  Subscription required
Waste  ......  Subscription required
Tonnes milled  ......  Subscription required
Stripping / waste ratio  ......  Subscription required
Annual milling capacity  ......  Subscription required
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Reserves at March 1, 2022:

CategoryTonnage CommodityGradeContained Metal
Proven 1.67 Mt Gold 0.94 g/t 51 koz
Probable 11.8 Mt Gold 2.02 g/t 765 koz
Proven & Probable 13.48 Mt Gold 1.88 g/t 816 koz
Measured 1.67 Mt Gold 0.94 g/t 51 koz
Indicated 12.93 Mt Gold 2.1 g/t 872 koz
Inferred 2.55 Mt Gold 1.62 g/t 133 koz
Total Resource 17.15 Mt Gold 1.91 g/t 1,056 koz

Commodity Production Costs:

CommodityUnits20232022
All-in sustaining costs (AISC) Gold USD  ......  Subscription required&nbs  ......  Subscription required
^ Guidance / Forecast.
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Financials:

Units2022
Capital expenditures M USD  ......  Subscription required
Revenue M USD  ......  Subscription required
Pre-tax Income M USD  ......  Subscription required
After-tax Income M USD  ......  Subscription required
EBITDA M USD  ......  Subscription required
Operating Cash Flow M USD  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 14, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 14, 2023
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Corporate Presentation 2022
................................... Subscription required 2020
................................... Subscription required 2019
Press Release 2017
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