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Sierra Leone
Sierra Rutile Mine (Sembehun Expansion Project)

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 Location:
135 km SE from Freetown, Sierra Leone

  Regional Office:
110 Wilkinson Road
Freetown
Sierra Leone
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Heavy Minerals
  • Rutile
  • Ilmenite
  • Zircon
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2039
Sierra Rutile’s current mining and mineral processing operations at Area 1 include four wet concentrator plants (WCPs); a mineral separation plant (MSP). Sierra Rutile also includes Sembehun project which is scheduled to start construction in 2024.

Sembehun is one of the largest and highest grade natural rutile deposits in the world.


Owners

Source:
CompanyInterestOwnership
Sierra Rutile Ltd. (operator) 100 % Direct
Sierra Rutile Holdings Ltd. 100 % Indirect
Sierra Rutile Holdings Limited (ASX:SRX) was demerged from Iluka Resources Limited (ASX:ILU) in July 2022.

Contractors

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Deposit Type

  • Mineral sands
  • Sedimentary


Summary:

The Sierra Rutile Area 1 (the Gangama and Lanti Deposits and other deposits within SRL’s current operations in Sierra Rutile Area 1) consists of a series of prominent hills and slight undulations with an elevation range of 0.9 meters above sea level (masl) along the mangroves, to 322 masl with the highest point being at Gbangbama Hill. The existing dredge ponds and rutile deposits are situated around the Imperi Hills region on the western and south-western extent, with the Lanti and Gangama expansion situated within the alluvial plains and mangrove swamps to the north west. The hills in the region have relatively steep slope angles and form prominent features in the landscape. The majority of the area adjacent to the hills comprises undulating, broad expansive fluvial plains, becoming increasingly flat towards the mangrove swamp areas.

The local geology is described as Tertiary aged alluvial deposits overlying the Precambrian high-grade quartzo-feldspathic-garnet gneiss (charnockite). The SR Area 1 heavy mineral sands placer deposits are hosted in the Bullom sediments which were deposited following a Tertiary marine regression with seas levels some 100 m below current levels. Mechanical and chemical weathering liberated heavy minerals from the underlying Kasila Group which were deposited in pre-incised channels.

Estuarine and marine unconsolidated sediments are located to the west of the major watershed located within the centre of SR Area 1. In contra ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Sierra Rutile’s current mining and mineral processing operations at Area 1 include four wet concentrator plants (WCPs); a mineral separation plant (MSP) and associated infrastructure; residential camps for senior and management staff; and a dedicated port facility (collectively referred to as Area 1). Sierra Rutile also holds one of the world’s largest known natural rutile deposits, the Sembehun Project.

Mineral reserves at Area 1 is represented by Gangama, Gbeni North, Lanti and Taninahun deposits. Mineral resources for Area 1 extension are comprises Pejebu, Ndendemoia East and Ndendemoia West deposits.

GANGAMA
Mining at Gangama involves the excavation of ore using a conventional load and haul method to deliver ore from the Gangama deposits to two adjacent WCPs (known as DM2:1 and DM2:2). Ore is excavated in the pit and delivered to the Run of Mine (ROM) stockpile or direct to the feed hopper.

TANINAHUN
Taninahun deposit is located within Area 1, approximately 6km northeast from the current Gangama operation. Mining is planned to commence in the second half of 2022 with a contractor truck and excavator operation. Ore from the Taninahun deposit will be hauled to the existing Gangama
DM2:1 and DM2:2 plants. The ROM ore will undergo primary mineral processing to produce HMC as is the current process outlined above.

GBENI & LANTI
At Gbeni and Lanti, two separate WCPs are operated (DM1 and DM4). In both cases, ore ........


Crushing and Grinding


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityProductUnits20222021202020192018
Rutile Mineral kt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required122
Heavy Minerals Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Ilmenite Mineral kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Zircon Mineral kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2021202020192018
Ore tonnes mined  ......  Subscription required  ......  Subscription required8,278 kt8,227 kt
Waste  ......  Subscription required  ......  Subscription required
Tonnes processed  ......  Subscription required  ......  Subscription required290 kt of heavy minerals concentrate242 kt of heavy minerals concentrate
Subscription required - Subscription is required.

Reserves at December 31, 2021:

CategoryTonnage CommodityGradeContained Metal
Proven 134 Mt Rutile 1.5 % 2 Mt
Probable 78 Mt Rutile 1.4 % 1.1 Mt
Proven & Probable 212 Mt Rutile 1.5 % 3.1 Mt
Measured 178 Mt Rutile 1.4 % 2.4 Mt
Measured 178 Mt Ilmenite 0.8 %
Measured 178 Mt Zircon 0.1 %
Indicated 309 Mt Rutile 1 % 3.1 Mt
Indicated 309 Mt Ilmenite 0.6 %
Indicated 309 Mt Zircon 0.1 %
Inferred 265 Mt Rutile 1 % 2.6 Mt
Inferred 265 Mt Ilmenite 0.5 %
Inferred 265 Mt Zircon 0.1 %
Total Resource 752 Mt Rutile 1.1 % 8.1 Mt
Total Resource 752 Mt Ilmenite 0.6 %
Total Resource 752 Mt Zircon 0.1 %

Commodity Production Costs:

CommodityUnits2021202020192018
Cash costs Heavy Minerals AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1,155 / t  
Subscription required - Subscription is required.

Financials:

Units2021202020192018
Revenue M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required 205.7  
Pre-tax Income M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required -14.5  
EBIT M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required -12.5  
EBITDA M AUD  ......  Subscription required  ......  Subscription required  ......  Subscription required 30.2  
Subscription required - Subscription is required



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
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....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 8, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2021
Subscription required 2019

Corporate Filings & Presentations:

DocumentYear
Half-year Report 2022
Other 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Environmental Assessment 2018
Annual Report 2017
Press Release 2017
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