Australia

Broken Hill Operation

Click for more information

Categories

Overview

Mine TypeUnderground
StatusActive
Commodities
  • Copper
  • Zinc
  • Lead
  • Silver
Mining Method
  • Longhole open stoping
  • Overhand Cut & Fill
  • Underhand Cut & Fill
Production Start... Lock
Mine Life... Lock
SnapshotThe Broken Hill Operations are principally comprised of three separate underground mining areas: Southern Operations; Potosi Operations; and North Mine.

Perilya Ltd. is not reported production data since it was de-listed from the Australian Stock Exchange in 2013.
Related Asset

Owners

SourceSource
CompanyInterestOwnership
Shenzhen Zhongjin Lingnan Nonfemet Co.,Ltd. 100 % Indirect
Perilya Broken Hill Limited is a wholly-owned subsidiary of Perilya Limited and is the entity which owns and operates the mining operations based in Broken Hill in New South Wales.

Perilya is owned by Zhongjin Lingnan Mining (HK) Company Limited of Hong Kong. It bought the remaining 48% of the shares that it did not already own in December 2013, and de-listed Perilya from the Australian Stock Exchange. Zhongjin Lingnan is a wholly owned subsidiary of Shenzhen Zhongjin Lingnan Nonfemet Co., Limited, China, which is 39.23% owned by the Government of the People’s Republic of China, and is listed on the Shenzhen stock exchange.

Contractors

Lock

- subscription is required.

Deposit type

  • VMS

Summary:

The Broken Hill deposit lies within the Broken Hill Group of the Palaeoproterozoic Willyama Supergroup and consists of nine separate but closely related orebodies that are stacked within a single stratigraphic package in the Hores Gneiss of the Broken Hill Group.

The impression that the Broken Hill orebodies are all massive sulphides with little else has long been dispelled.

Not only can different styles of mineralisation be identified but the information also gives valuable insights into the ways the deposit has responded to deformation and also to the predeformation characteristics of the deposit and therefore its genesis.

Massive sulphides form only a minor part of each orebody and are most common in deformed regions of the lenses. Sulphide-rich mineralisation is more often coarsely banded by variations in gangue mineral and sulphide abundance. Each orebody contains a high percentage of gangue minerals, including primary calcite, calcium or manganese pyroxenoids or pyroxenes, or quartz, that are distributed through the mineralisation as discrete bands, layers and stratigraphic horizons. Sphalerite (marrnatite) is the dominant sulphide constituent of all ore lenses and the percentage of galena diminishes in each orebody from 3L to BL.

The Broken Hill Line of Lode is hosted by the upper Broken Hill Group of the Willyama Supergroup. The Line of Lode is an approximately 9.5km long, northeast – southwest striking, approximately boomerang-shaped orebody, with the “arms” plunging to depth. The Line of Lode consists of five major ore lenses (1, 2, 3, A and B Lenses) surrounded by a zone of disseminated mineralisation referred to as the C Lens. Typically, the upper lenses (2 and 3 Lenses) are lead rich, while the lower lenses (1, A and B Lenses) are zinc rich.

The geological setting of the North Mine is broadly similar to the rest of the Line of Lode, with each of the lenses occurring within the Lode. Mineralisation within the North Mine is typically associated with:
• Sphalerite (zinc sulphide);
• Galena (lead sulphide) with variable silver; and
• Tetrahedrite (copper antimony sulfosalt) with silver.

Typical combined grades of lead and zinc range from 5% to 40% within the high-grade zones, with silver grades between 50g/t and 400g/t in the galena rich lenses.

In November 2021, SKR undertook further mineralogical assessment of soils and materials at the Mine Site. SKR (2022) identified sulphur bearing minerals comprising the following.

• Sulfides – sphalerite and galena;
• Sulfates – anglesite, gypsum and Szomolonkite/gunningite; and
• Hydroxysulfates – jarosite, beaverite and beaudanite.

Reserves

Lock

- subscription is required.

Mining Methods

Lock

- subscription is required.

Comminution

Crushers and Mills

Lock

- subscription is required.

Processing

Lock

- subscription is required.

Production

CommodityProductUnits20212020
Silver Metal in concentrate koz  ....  Subscribe  ....  Subscribe
Lead / Zinc Metal in concentrate M lbs  ....  Subscribe  ....  Subscribe
Zinc Metal in concentrate kt
Zinc Concentrate kt
Lead Payable metal kt
Lead Metal in concentrate kt
Lead Concentrate kt
Silver M oz

Production Costs

Commodity production costs have not been reported.

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Job TitleNamePhoneProfileRef. Date
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required Oct 10, 2023
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required Oct 10, 2023
....................... Subscription required ....................... Subscription required ........... Subscription required Subscription required Oct 10, 2023
....................... Subscription required ....................... Subscription required Subscription required Oct 10, 2023

EmployeesContractorsTotal WorkforceYear
...... Subscription required ...... Subscription required ...... Subscription required 2021
...... Subscription required ...... Subscription required ...... Subscription required 2020

Aerial view:

Lock

- subscription is required.