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Australia
Cyclone Project

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 Location:
740 km NE from Kalgoorlie, Western Australia, Australia

  Project Contacts:
Unit 8
55-61 Holdsworth Street
Coorparoo
Queensland, Australia
4151
Phone  ...  Subscription required
EmailEmail
WebsiteWeb
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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Heavy Minerals
  • Zircon
  • Rutile
  • Leucoxene
  • Titanium dioxide
  • Ilmenite
Mining Method
  • Truck & Shovel / Loader
  • Backfill
Mine Life13.2 years (as of Jan 1, 2018)


Owners

Source: p. 18
CompanyInterestOwnership
Diatreme Resources Ltd. 100 % Indirect

Contractors

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Deposit Type

  • Beach placer


Summary:

The deposit, an ancient coastal placer, is a surface deposit with low-grade overburden of about 9m to 18m, under which is a mineralised layer with an average thickness of about 13.5m, suitable for mining through an open-pit bulldozer mining method and conveyed by slurry pump. [FS p.28]

The Cyclone Deposit is made up of a number of mineralised strand systems which are interpreted to represent Tertiary beach placer deposits with associated overlying dunal and underlying near shore deposits. Quaternary cover overlies the deposit, and a shallow weathering profile with calcrete and ferruginous induration has developed in the overburden material, with the mineralised sands being free flowing with very little induration (rock) and low slimes contents which are favourable to conventional mining techniques.

Mineralisation occurs within bimodal near-shore fine sands, higher grade beach strandlines, homogenous beach sands, and overlying aeolian dune sands. A schematic stratigraphic column for Cyclone is presented below.

The mineralisation displays a very high value mineral assemblage and is dominated by zircon (31% of the HM) and a range of weathered / altered titanium bearing minerals (42% of the HM), with HiTi (70 85% TiO2) being the most abundant. Siliceous Ti-oxides (>10% SiO2) make up around 22% of the HM, but levels of other "trash" (i.e. low value) HM are very low.


Mining Methods

  • Truck & Shovel / Loader
  • Backfill


Summary:

Approximately 150ha will initially be cleared of vegetation for project construction and an average of 50ha per year will be cleared for ongoing operations, including mining activities and support facilities.

For the initial start-up pit when there will be no area available for rehabilitation, topsoil will be stored in stockpiles outside the mining area. The average annual topsoil removal rate is 50,000 cubic metres per year.

The ore to be mined is buried beneath varying depths up to 20m of weakly mineralised overburden including a zone of induration relating to a lateritic weathering profile. The overburden must be removed to expose the high grade ore zone for mining.

During normal operations, the overburden will be removed using an excavator and will be transported to the mined out areas in trucks where it will be dumped to backfill the pit. Overburden which is removed for development of the initial pit will be used to construct tailings storage facility walls.

Subsoil overburden will be stockpiled beside the mining area as required for the rehabilitation program and will be returned as subsoil to be placed on completed tailings before covering with topsoil.

A bulldozer and dozer trap method will be used to mine the ore. There will be two separate 650 tonnes per hour (tph) mining units at different sections of the face to ensure blending of higher and lower grade ore to produce a controlled feed grade to the WCP.
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Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityProductUnitsAvg. AnnualLOM
Heavy Minerals Concentrate kt 1481,940
Zircon Mineral kt  ......  Subscription required  ......  Subscription required
Zircon Mineral in concentrate kt  ......  Subscription required
Leucoxene Oxide kt  ......  Subscription required
Ilmenite Oxide kt  ......  Subscription required

Operational Metrics:

Metrics
Tonnes processed, LOM 131.9 Mt *
Annual processing capacity 10 Mt *
Annual mining rate 12.9 Mt *
Annual ore mining rate 10 Mt *
* According to 2018 study.

Reserves at April 27, 2017:
Cut-off grade is 1.0% HM.

CategoryTonnage CommodityGradeContained Metal
Probable 138 Mt Heavy Minerals 2.6 % 3.52 Mt
Probable 138 Mt Zircon 0.72 % 990 kt
Probable 138 Mt Rutile 0.07 %
Probable 138 Mt Leucoxene 0.17 %
Probable 138 Mt Ilmenite 0.32 %
Measured 156 Mt Heavy Minerals 2.4 % 3.81 Mt
Measured 156 Mt Zircon 0.69 % 1,079 kt
Measured 156 Mt Rutile 0.07 %
Measured 156 Mt Leucoxene 0.16 %
Measured 156 Mt Ilmenite 0.3 %
Indicated 48 Mt Heavy Minerals 1.9 % 0.89 Mt
Indicated 48 Mt Zircon 0.38 % 183 kt
Indicated 48 Mt Rutile 0.04 %
Indicated 48 Mt Leucoxene 0.09 %
Indicated 48 Mt Ilmenite 0.3 %
Measured & Indicated 203 Mt Heavy Minerals 2.3 % 4.7 Mt
Measured & Indicated 203 Mt Zircon 0.62 % 1,262 kt
Measured & Indicated 203 Mt Rutile 0.06 %
Measured & Indicated 203 Mt Leucoxene 0.14 %
Measured & Indicated 203 Mt Ilmenite 0.3 %

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Heavy Minerals USD 375.82 / t *  
Assumed price Leucoxene USD 800 / t *  
Assumed price Heavy Minerals USD 647 / t *  
Assumed price Zircon USD 1,500 / t *  
Assumed price Ilmenite USD 350 / t *  
* According to 2018 study / presentation.

Operating Costs:

Units2018
OP mining costs ($/t milled) USD 3.63 *
Total operating costs ($/t milled) USD  ......  Subscription required
* According to 2018 study.
Subscription required - Subscription is required.

2018 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Working capital $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
OP OpEx $M USD  ......  Subscription required
Total OpEx $M USD  ......  Subscription required
Pre-tax NPV @ 10% $M USD  ......  Subscription required
After-tax NPV @ 10% $M USD  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of November 15, 2018:
HME Type
Bulldozer
....................... Subscription required
....................... Subscription required
....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 15, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
Feasibility Study Report 2018
Press Release 2018
Subscription required - Subscription is required.

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