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Australia
Riley Mine

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 Location:
17 Km W from Tullah, Tasmania, Australia

  Address:
Suite 3, Level 3, 24 Outram Street
West Perth
Western Australia, Australia
6005
Phone  ...  Subscription required
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Production Start...
The company’s Riley Iron Ore Project remains on care and maintenance since undertaking the first shipment of Iron Ore in September 2021.


Owners

Source: p. 14
CompanyInterestOwnership
Venture Minerals Ltd. 100 % Indirect
The Riley DSO deposits are entirely located within granted Mining Lease 5M/2012 held by Venture Iron Pty Ltd a wholly owned subsidiary of Venture Minerals Ltd.

Contractors

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Deposit Type

  • Laterite
  • Sedimentary


Summary:

The Riley deposit is a ferruginous laterite derived from weathering of the underlying Wilson River Ultramafic Complex of western Tasmania. The deposits are sedimentary in nature, most likely derived by the erosion of a once thicker veneer of ferruginous laterite covering Serpentine Ridge. There are three significant iron laterite deposits at Riley Creek, namely Areas A, C and D, covering a combined area of approximately 3km2.

The deposits consist of unconsolidated ferruginous lateritic gravel (pisolites) and cemented laterite. The ore is comprised of a combination of hematite and maghemite. The deposit has an average combined thickness of 1.5m, with some areas reaching up to 4m. The laterite deposits are thickest on the ridges, with Areas A and C the most significant of the three deposits. The resource is estimated to be 2.0M tonnes at an average density of 2.5 t/m3.

The in-situ iron grade of the lateritic gravel ranges from 36% to 64% Fe, and the cemented laterite 46% to 61% Fe.

A complete section through the laterite deposits consists of a surficial layer of lateritic gravel (RLG), underlain by a zone of cemented lateritic gravel (RLC)), then ferruginous clay (RCLY) with a variable amount of dispersed ferruginous gravel, minor lenses of lateritic gravel and locally lenses of quartz-rich sand, then greenish and cream clays and finally serpentinite basement. In some locations ferruginous gravel directly overlies clay or, around the margins o ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The ore at the Riley deposit is at surface and hence there is no strip ratio. The ore is free dig and will be extracted by excavator in a series of sequential mining panels. Each mining panel will be 25m wide, stretching the length of the resource.

Post completion of forestry activities, the land will be cleared of any remaining trees and debris. An initial mining panel will be cleared with all vegetation windrowed at the base of the cleared area. As mining progresses, the next parallel 25m wide panel will be cleared ready for mining.

The vegetation cleared from the next adjacent mining panel will then be pushed into the previously mined area allowing rehabilitation to commence. Material rejected from the screening plant will be placed back into the previously mined panels negating the need for a rock storage facility.

The depth of excavation is expected to average 1.5 metres, with some pockets up to 4m, so a conventional open pit design is not required.

The mining fleet will consist of 1 x 45t production excavator servicing five 40t trucks.


Crushing and Grinding
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Processing

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Summary:

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Production:

CommodityUnitsAvg. Annual (Projected)LOM (Projected)
Iron Ore M wmt 11.7
All production numbers are expressed as fines.


Reserves at June 19, 2019:
The Mineral Resources and Reserve as at 30th June 2021 at Riley are unchanged from June 19, 2019.

In estimating the resources, wireframing restricted the model to >50% Fe beneficiated grade, and a lower cut-off of 53% Fe was selected to obtain what is currently a marketable 57% Fe DSO product.

CategoryTonnage CommodityGrade
Probable 1.6 Mt Iron 57 %
Indicated 2 Mt Iron 57 %



Proposed Heavy Mobile Equipment as of August 22, 2019:
HME TypeSizeQuantityLeased or
Contractor
Excavator 45 t ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 17, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Quarterly Report 2022
Quarterly Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2019
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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