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Malingunde saprolite-hosted graphite project, Malawi

25th August 2017

By: Sheila Barradas

Creamer Media Research Coordinator & Senior Deputy Editor

     

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Name of the Project
Malingunde saprolite-hosted graphite project.

Location
The deposit is located at Malingunde, just 15 km south-west of Lilongwe, Malawi’s capital city.

Client
Sovereign Metals.

Project Description
The results of a scoping study have demonstrated the potential for the Malingunde project to support a very low capital- and operating-cost operation, with a graphite concentrate production of about 44 000 t/y over an initial mine life of 17 years. This equates to an average of about 475 000 t of ore processed a year, totalling about eight-million tonnes grading 10.0% total graphitic carbon (TGC) over the life-of-mine (LoM). There is significant opportunity to increase the mine life beyond 17 years by processing lower-grade material or through the discovery of additional high-grade resources within reasonable trucking distance to the proposed processing plant.
The scoping study is based on the maiden mineral resource estimate (MRE) for the Malingunde deposit reported in April 2017, which comprises 65.1-million tonnes grading 7.1% TGC (saprolite, saprock and fresh rock). The MRE includes a high-grade saprolite component of 8.9-million tonnes grading 9.9% (7.5% TGC cutoff), which is the focus of the study.
The geometry of the Malingunde deposit is one of several high-grade, shallow to moderate north-east-dipping mineralised zones. Sovereign is targeting the near-surface, soft saprolite portion of the resource to a maximum vertical depth of about 25 m. This results in several long, shallow openpits in the mining plan.
A contract mining strategy has been selected to mitigate project risk, although operational management will be retained by Sovereign personnel.
The tailings management facility (TMF) for the project has been designed to safely contain the LoM estimated tailings of 7.3-million tonnes. The characteristics of the tailings produced have not yet been confirmed and, therefore, a conservative approach to the deposited density has been adopted assuming a final settled density of 1.15 t/m3.
The strategy includes a fully high-density polyethylene- (HDPE-) lined facility, leaving the option for a non-HDPE-lined facility or inpit deposition as an opportunity that could be used, should future testing of the materials prove that contamination is not an issue.

Jobs to Be Created
Not stated.

Net Present Value/Internal Rate of Return
The project has an estimated payback of two years.

Value
Total capital costs have been estimated at $29-million.

Duration
The project could start construction in 2019, with production likely to start in late 2019 to early 2020. This timeframe is subject to normal economic, environmental, financing and permitting factors.

Latest Developments
None stated.

Key Contracts and Suppliers
None stated.

On Budget and on Time?
Not stated.

Contact Details for Project Information
Sovereign Metals, tel+61 8 9322 6322, fax+61 8 9322 6558 or email info@sovereignmetals.com.au.

Edited by Martin Zhuwakinyu
Creamer Media Magazine Managing Editor

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