United States

Pogo Operation

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Categories

Overview

Mine TypeUnderground
StatusActive
Commodities
  • Gold
  • Silver
Mining Method
  • Longhole open stoping
Backfill type ... Lock
Production Start... Lock
Mine Life... Lock
SnapshotThe Pogo Operation includes Pogo underground mine and the Pogo milling facilities.
Related Asset

Owners

SourceSource
CompanyInterestOwnership
Northern Star Resources Ltd. 100 % Indirect
The Pogo operation is 100% owned by Northern Star Resources.

Contractors

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Deposit type

  • Breccia pipe / Stockwork
  • Vein / narrow vein
  • Intrusion related

Summary:

The Pogo is in the Tintina Mineral Belt, which is a 200 km-wide, 1,200 km-long arc, broadly bounded by the Tintina-Kaltag fault systems to the north and the Denali-Fairwell fault systems to the south. The region contains numerous economic deposits of gold in addition to copper, lead, zinc, silver and tungsten deposits.

The lithological units in the Pogo deposit area are dominantly high-grade metamorphic rocks intruded by later felsic to intermediate intrusive units. Key metamorphic rocks include biotite feldspar gneiss, augen gneiss and mafic schist derived from both sedimentary and igneous protoliths. Metamorphic mineral assemblages observed consist of quartz, feldspar, biotite, chlorite, muscovite, sillimanite, andalusite and garnet. The 50km long Goodpaster batholith (granite tonalite-diorite) is the dominant intrusive complex in the district. Locally small felsic to intermediate stocks and dykes are present.

The principal mineralisation is hosted in biotite-quartz-feldspar paragneiss and orthogneiss, although all other lithologies are cut. Where the veins cross intrusives, they tend to split and become stockwork zones.

Gold at Pogo is predominantly hosted within laminated quartz veins ranging in thickness from <0.5m to >10m. Mineralised veins contain around 3% sulphides (arsenopyrite, pyrite, pyrrhotite, loellingite, chalcopyrite, bismuthinite, sphalerite, galena, molybdenite, tetradymite, maldonite) and a variety of Bi-Pb-Ag sulphosalts.

The Pogo gold deposit is an example of a Reduced Intrusive Related Gold Deposit (RIRGD), characterised by a low sulphide content, (typically <5%) and a reduced ore mineral assemblage, that typically comprises pyrite and lacks primary magnetite or hematite. In brief, these deposits typically have the following characteristics:
- Mineralisation occurs as sheeted vein deposits or stockwork assemblages and often combines gold with variably elevated Bi, W, As, Mo, Te, and/or Sb, but low concentrations of base metals;
- Restricted and commonly weak proximal hydrothermal alteration;
-Spatially and temporally related to reduced intrusions of intermediate to felsic composition.

Dimensions

Liese – The generally shallowly north-westerly dipping Mineral Resource extends approximately 1,300m in a north-easterly direction along strike and 1,300m down dip.

Eastern Deeps – The shallow to moderately north-westerly dipping Mineral Resource extends approximately 530m in a north-easterly direction along strike, and 600m down dip.

North Zone – The steeply east dipping Mineral Resource extends approximately 950m in a northerly direction along strike, and 970m down dip. A flatter component, dipping west, extends 250m by 190m.

South Pogo – The moderately north-westerly dipping Mineral Resource extends approximately 1100m in a north-easterly direction along strike, and 760m down dip.

Fun Zone – the generally moderate to steep-westerly dipping Mineral Resource extends approximately 880m in a westerly direction across strike, 650m in a northerly direction across- strike and 915m down dip.

Central Zone - The shallow to moderately north-westerly dipping Mineral Resource extends approximately 750m in a north-easterly direction along strike, and 500m down dip.

Hill 4021 – the Hill 4021 prospect consists of two zones of stacked, shallowly dipping mineralised structures with combined extents approximately 1,900 m in a north-westerly direction along strike and 500 m down dip.

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

CommodityUnits202420232022202120202019201720162015
Gold koz  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe184271269281
All production numbers are expressed as metal in doré. ^ Guidance / Forecast.

Operational metrics

Metrics20232022202120202019201720162015
Annual processing capacity  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe0.8 Mt
Ore tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe783,505 t
Waste  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
Tonnes milled  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe796,318 t884 kt941,856 tons926,603 tons
Daily ore mining rate  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe3,300 tons
Total tonnes mined  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe1,515,117 tons1,516,576 tons

Production Costs

Commodity202420232022202120202019
Credits (by-product) Gold  ....  Subscribe  ....  Subscribe  ....  Subscribe
Cash costs (sold) Gold  ....  Subscribe  ....  Subscribe  ....  Subscribe
All-in sustaining costs (sold) Gold  ....  Subscribe 1,705 / oz  AUD
All-in sustaining costs (sold) Gold  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe
All-in costs Gold  ....  Subscribe  ....  Subscribe  ....  Subscribe
^ Guidance / Forecast.
** Net of By-Product.

Financials

Units2024202320222021202020192017
Capital expenditures (planned) M AUD  ....  Subscribe
Growth Capital M AUD  ....  Subscribe  ....  Subscribe  ....  Subscribe
Capital expenditures M 32  USD
Revenue M  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 253.1  AUD
Pre-tax Income M  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe -31.9  AUD 102  USD
After-tax Income M  ....  Subscribe -20  AUD
EBITDA M  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 18  AUD
Operating Cash Flow M  ....  Subscribe  ....  Subscribe

Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required Feb 7, 2024
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EmployeesTotal WorkforceYear
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Aerial view:

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