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Australia

A1 Mine

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Australia

A1 Mine

Location: 110 km NE from Melbourne, Victoria, Australia

Address:

A1 Gold Mine Woods Point Road
Mansfield
Victoria, Australia
3722

Contacts:

Additional Resources for Suppliers & Investors

Categories

Overview

Mine TypeUnderground
StatusActive
Commodities
  • Gold
Mining Method
  • Airleg stoping
Production Start... Lock

Owners

SourceSource
CompanyInterestOwnership
Kaiser Reef Ltd. 100 % Indirect
On 28 January 2021, Kaiser Reef Limited completed the acquisition of operating gold mining assets and a processing facility owned by Centennial Mining Ltd (previously subject to Deed of Company Arrangement). The assets acquired are located in the Victorian Goldfields.

Contractors

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SourceSource

Deposit type

  • Breccia pipe / Stockwork
  • Vein / narrow vein

Summary:

The project area lies within the Woods Point Walhalla Synclinorium structural domain of the Melbourne Zone, a northwest trending belt of tightly folded Early Devonian Walhalla Group sandy turbidites. The domain is bounded by the Enoch’s Point and Howe’s Creek Faults, both possible detachment-related splay structures that may have controlled the intrusion of the Woods Point Dyke Swarm and provided the conduits for gold bearing hydrothermal fluids.

The A1 deposit in general is characterised by narrow, very high-grade gold veins that are exploited using airleg stope mining within an extensive intrusive diorite. The Queens Lode is a large high-grade unmined part of the larger A1 gold mine system that is quite distinct from the typical ore mined historically, and still, at A1.

Most gold mineralisation in the Woods Point to Gaffney’s Creek corridor occurs as structurally controlled shear-zone hosted dilational breccias and stringer quartz vein systems hosted by dioritic dyke bulges. The A1 Mine is central to this corridor, with gold mineralisation contained within the steeply dipping main southern diorite dyke bulge and a smaller northern diorite dyke. The dyke is cut and offset by a series of mainly reverse faults which host most of the gold mineralisation.

Gold is associated with intense quartz-ankerite-muscovite-sulphide wall rock alteration around dilational breccia veins with branching quartz-sulphidic stringer veins or narrow veins within reverse fault systems hosted by the dyke or where fault offsets show the dyke contact on one vein wall and metasedimentary rocks on the other. Wide zones of quartz stinger veins and carbonate-sulphide altered wall rock are more amenable to bulk mining techniques.

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

During the 5 month period under the Kaiser Reef Limited’s ownership, the A1 Mine produced 2,178 ounces.
CommodityUnits202220202017
Gold oz  ....  Subscribe  ....  Subscribe15,840
All production numbers are expressed as metal in doré.

Operational metrics

Metrics202220202017
Tonnes processed  ....  Subscribe  ....  Subscribe
Ore tonnes mined  ....  Subscribe  ....  Subscribe84 kt

Production Costs

Commodity production costs have not been reported.

Financials

Units20222017
Revenue M  ....  Subscribe 26  USD
Gross profit M  ....  Subscribe
Pre-tax Income M  ....  Subscribe
After-tax Income M  ....  Subscribe
EBIT M  ....  Subscribe
EBITDA M  ....  Subscribe
Operating Cash Flow M  ....  Subscribe

Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ........... Subscription required Dec 18, 2023
....................... Subscription required ....................... Subscription required Subscription required Dec 18, 2023

Aerial view:

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