Australia

Spotted Quoll Mine

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Categories

Overview

Mine TypeUnderground
StatusActive
Commodities
  • Nickel
Mining Method
  • Longhole open stoping
Backfill type ... Lock
Mine Life... Lock
SnapshotSpotted Quoll is an underground mine which is a part of Forestania operation.
Related AssetForrestania Operation

Owners

SourceSource
CompanyInterestOwnership
IGO Ltd. 100 % Indirect
On 20 June 2022, IGO Limited acquired 100% of the issued capital of Western Areas Limited. Western Areas was an ASX listed Australian-based mining and exploration company with a portfolio of operating and development stage mines. It owns a 100% interest in the Forrestania Operation (consisting of the Flying Fox and Spotted Quoll underground mines and the Cosmic Boy processing facility) and the Cosmos Project, both located in Western Australia, together with a substantial exploration portfolio.

Contractors

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Deposit type

  • VMS

Summary:

The deposit lie within the Forrestania Greenstone Belt, which is part of the Southern Cross Province of the Yilgarn Craton in Western Australia. The main deposit type is the komatiite hosted, disseminated to massive nickel sulphide deposits, which include the Spotted Quoll deposit. The mineralisation occurs in association with the basal section of high MgO cumulate ultramafic rocks.

The strike length of the Mineral Resource is nominally 300m on average, with a range of 25m to 520m, depending on depth below surface. The nominal mean dip length is 1,500m.

The elevation (RL) below the pre-existing pit is 1250mRL and the maximum depth of the Mineral Resource is 250mRL. The mean thickness of the mineralised zone is 3.1m, with a maximum thickness of 13.4m.

The deposit is located within the traditional footwall of the basal ultramafic metasediment contact, which was probably the original locus for sulphide deposition from an overlying pile of komatiite flows. Subsequent metamorphism, deformation, and intrusion of granitoid sills has contributed to a complex setting, with mineralisation now occupying a possible shear zone within the footwall sediments, 15-20m (stratigraphical) beneath the basalt/ultramafic contact.

The deposit is principally a body of matrix magmatic sulphide mineralisation in which the original pentlandite and pyrrhotite assemblage has been overprinted by arsenic-bearing assemblages dominated by gersdorffite and minor nickeline. Sulphide abundances of 20% to 90% are common. Mean nickel grades of ore intersections are in the order of 4% to 12% Ni.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityUnits20212020201920182017
Nickel kt  ....  Subscribe  ....  Subscribe131416
All production numbers are expressed as metal in ore.

Operational metrics

Metrics20212020201920182017
Ore tonnes mined  ....  Subscribe  ....  Subscribe324,395 t346,455 t354,659 t

Production Costs

Commodity production costs have not been reported.

Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 25, 2023

Aerial view:

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