Overview
Stage | Permitting |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Production Start | ... |
Mine Life | 13.7 years (as of Jan 1, 2023) |
Bunyu is one of the largest graphite deposits in the world.
Having commissioned Bunyu Stage 1, Volt intends to move to Stage 2 later this decade with the goal of leveraging the platform established by Stage 1, and Bunyu’s status as one of the largest graphite resources globally, to dramatically scale production from 24,780 to 170,000 tonnes per annum and help meet the forecasted global increase in demand for graphite products. Environmental Impact Assessment Certificate and Mining Licences received covering both Stage 1 and 2.
As of January 2024, Volt Resources has been delivered graphite concentrate to the customer. Volt Resources expect to get the customer feedback before 29 March 2024. The company believes that successful completion of product qualification by the customer will enable it to secure the Bunyu Project financing. |
Source:
p. 41
The Bunyu Project PLs are held by Volt Graphite Tanzania Ltd (formerly Nachi Resources Limited) which in turn is 100% owned by Volt Resources Limited.
Contractors
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Summary:
The graphite mineralisation occurs in Archean basement rocks of the Mozambique Belt system which principally comprise metamorphic rocks ranging from schist to gneisses including marbles, amphibolite, graphitic schist, mica and kyanite schist, acid gneisses, hornblende, biotite and garnet gneisses, quartzite, granulite, and pegmatite veins.
Exploration has focused on areas where there is no or minimal overlying younger sedimentary sequences remaining (mostly Cretaceous sandstones and conglomerates).
Dimensions
• The main zones of mineralisation extend over an area of 3 km along strike, 800 m to 1.3 km across strike and from surface to a drilled depth of approximately 150 m below surface.
• The Bunyu 1 mineralisation remains open to the north-east (where it is under a thick sedimentary sequence), to the south-west and at depth.
Summary:
The proposed mining method at Bunyu Project is a conventional truck and shovel open pit with waste material stacked in waste dumps. Due to the weathered nature of the material, it has been assumed material diggability will be achieved through dozer ripping and drill and blast will not be required. Mining is to be undertaken by a contractor under the control and management of VGT personnel and will likely be operated on a one 10 – 12 hour shift /6 days per week basis as required. A bench height of 6 metres has been selected, excavated in 3 x 2 metre lifts or flitches. This is considered appropriate for both the orebody and the proposed equipment.
The Bunyu is generally flat lying which allows for selective mining with the small equipment proposed. There are several sub-parallel lenses that fall within the pit boundary resulting in a relatively low stripping ratio (0.65 waste : 1 ore).
Suitable waste material from within the South Pit area will be utilised as bulk fill for construction purposes prior to mining commencing. Consequently, the mine production schedule consists of the Ore Reserve with an allowance for depletion of this volume of waste material. The deposit will be mined to a 6m high design bench, but excavated in 3 x 2m high flitches to manage dilution.
As all the material is weathered in nature and no fresh material is mined, it has been assumed the dozer ripping will be utilised. It is not envisaged that drill and blast will be r ........
Source:
Flow Sheet:
Summary:
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Source:
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Reserves at July 30, 2018:
The Mineral Resources have been reported above a 2.93% TGC cut-off grade.
The Mineral Reserves have been reported above a 4% TGC cut-off grade.
Mineral Resources are reported inclusive of Mineral Reserves.
Category | Tonnage | Commodity | Grade |
Proven
|
1,929 kt
|
Total Graphitic Carbon
|
5.97 %
|
Probable
|
3,515 kt
|
Total Graphitic Carbon
|
6.28 %
|
Proven & Probable
|
5,444 kt
|
Total Graphitic Carbon
|
6.17 %
|
Measured
|
8 Mt
|
Total Graphitic Carbon
|
5.8 %
|
Indicated
|
31.9 Mt
|
Total Graphitic Carbon
|
5.6 %
|
Inferred
|
36.9 Mt
|
Total Graphitic Carbon
|
5.1 %
|
Total Resource
|
76.8 Mt
|
Total Graphitic Carbon
|
5.4 %
|
Corporate Filings & Presentations:
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