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Fiji
Vatukoula Mine

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 Location:
7 km S from Tavua, Fiji

  Project Contacts:
Vatukoula Tavua
Fiji
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StatusInactive / Suspended
Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Breast mining
  • Cut & Fill
  • Shrinkage stoping
Processing
  • Flotation
  • Carbon in pulp (CIP)
  • Roasting
Vatukoula Gold Mines is currently pursuing a strategy of refurbishment and development at this prolific gold producing mine. Applying modern mining techniques and equipment in the mining process will assist in restoring production to historic rates of 100,000 ounces of gold per annum. The Company is currently progressing full underground and surface mining exploration drill programmes with the intention of increasing the information available on the current gold resources as an aid to more efficient planning.


Owners

 
CompanyInterestOwnership
Vatukoula Gold Mines plc. 100 % Direct

Deposit Type

  • Epithermal
  • Vein / narrow vein


Summary:

Vatukoula is a low-sulphidation epithermal gold vein deposit associated with alkaline type igneous rocks in a volcanic setting, typical of several other major gold mines in the southwest Pacific region including Grasberg, Porgera and Lihir. Post caldera collapsing (a critical genetic feature) was the formation of a north-westerly shear system transecting the caldera, with flatly dipping structures within the peripheral basalts resulting from tectonic resettling. Gold mineralisation is thought to have been set downbetween 3 and 7 million years ago, post-dating magmatism by around 400,000 years. As currently understood, the vast majority of the gold at Vatukoula is located within a two square kilometre fractured block, largely in the form of gold in arsenopyrite. However between 10 and 50% of the gold is in the form of precious metal tellurides. In terms of exploration it is known highlevel epithermal mineralisation and alteration occur up to 4km from the Emperor gold mine, in an area which has a demonstrable present day hydraulic connection with the mine.

Typically, gold mineralization occurs within steeply dipping dykes and shears, flat-dipping structures (sub 45°), known locally as “flatmakes”, and the intersection of two or more structures, referred to as “shatter zones”. An estimated 7Moz (8.5Moz pre mined resources assuming an 80% extraction rate) of gold has been extracted since mining operations commenced.

Gold bearing veins range from 1cm to 1.2m, at times dramatically over relatively short distances. Annualised gold grades have historicallly ranged from 5.5g/t to 9.5g/t Au. Historically, mining continued along the mineralised “flatmake”, absorbing good grade and poor.


Mining Methods

  • Breast mining
  • Cut & Fill
  • Shrinkage stoping


Summary:

The Mine is a long established underground gold mine. There are a total of nine shafts in the Mine, but only four are being used other than for ventilation; the Smith & Phillip Shaft for hoisting ore, the Cayzer Shaft for men and materials and a Decline Shaft for access for the rubber tyred mine fleet.

The mining operations use conventional labour intensive stopping methods together with trackless ground handling and haulage followed by skip hoisting via the vertical shafts. Stopping will be a mixture of Long Wall Breast, Shrinkage and Cut and Fill.


Crushing and Grinding


Processing

  • Flotation
  • Carbon in pulp (CIP)
  • Roasting

Source: Subscription required

Summary:

Infrastructure at the Vatukoula Gold Mine includes assay labs, an independent power station, workshops and administrative offices.

Processing Plant - At the Mine site there is a seven hundred thousand tonne per annum processing facility, which includes crushing, grinding, flotation, roaster, CIP and tailings dams.

Recoveries & Grades:

CommodityParameter20132012
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t 3.814.24
Subscription required - Subscription is required.

Projected Production:

CommodityUnits20132012
Gold oz 39,85853,152
All production numbers are expressed as metal in concentrate.

Operational Metrics:

Metrics20132012
Total tonnes mined 397,995 t477,089 t
Tonnes processed 428,978 t479,524 t

Reserves at December 31, 2013:

CategoryTonnage CommodityGradeContained Metal
Proven 0.64 Mt Gold 8.14 g/t 0.17 M oz
Probable 2.37 Mt Gold 7.66 g/t 0.58 M oz
Proven & Probable 3.01 Mt Gold 7.768 g/t 0.75 M oz
Measured 7.6 Mt Gold 6.1 g/t 1.5 M oz
Indicated 4.3 Mt Gold 8.8 g/t 1.2 M oz
Inferred 9.1 Mt Gold 4.6 g/t 1.4 M oz

Commodity Production Costs:

CommodityUnits2013
Cash costs Gold USD 1,606 / oz

Financials:

Units2013
Revenue M GBP 39.1  
EBITDA M GBP -8.98  
Operating Cash Flow M GBP -0.07  


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 13, 2018
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2013

Corporate Filings & Presentations:

DocumentYear
Annual Report 2013
Project Description 2012
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Aerial view:

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