Overview
Stage | Permitting |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Production Start | ... |
Mine Life | 23 years (as of Jan 1, 2021) |
Source:
p. 1,34
Mining Licence for the Kanyika Niobium Project in Malawi to Globe’s wholly owned Malawian subsidiary Globe Metals & Mining (Africa) Limited.
Contractors
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Summary:
Kanyika is an intrusion-hosted Pyrochlore-Zircon mineralized deposit. It lies within the Malawi Province of the Mozambique Orogenic Belt. It is almost entirely underlain by Precambrian and Lower Palaeozoic Basement Complex, predominantly gneiss metamorphic rocks.
Most of the rocks in the region are para-gneiss originating from variable protoliths including pelites, sandstones and limestones. Several granitoid bodies of variable size have intruded the gneiss basement and may have originated wholly or in part by anatexis. A few small concordant bodies of alkaline syenite rocks containing nepheline are also present, including the strike-extensive body which hosts the Kanyika Pyrochlore-Zircon mineralization.
The deposit is hosted within a NNE striking, westerly dipping alkaline granitoid, which has broadly concordant contacts with enclosing biotite gneiss. The host unit outcrops over 3.5 km strike length, and averages 200m wide at surface in the south and 50m in the north.
The Kanyika deposit is orientated in a N-S direction, is steeply dipping, and is open to the north and to the south. The deposit lies on the western flank of a regional fold associated with an alkali granite which can be traced for about 15 km and is several hundred meters wide.
The intrusion appears to be divided into two planar units separated by biotite-rich rock and:
• contains pyrochlore and zircon mineralisation in disseminated zones;
• has niobium ........
Summary:
Mining will be carried out using open cut, drill and blast strategies and material haulage distances will be minimised. The access ramp will exit the pit to the east close to the plant and stockpiles. A blasting safety zone of minimum 500 metres will be demarked.
Ore production rates will ramp up from 1.0 Mtpa in the first year to 1.5 Mtpa (million tonne per annum) with the life-of-mine stripping ratio to average 1.54:1 (waste : ore). The final open pit dimensions are expected to be in the order of 250 m wide, 2.2 km long (north-south) and average 130 m deep.
Drill and Blast
Rock fragmentation will be undertaken by drilling and blasting based on the rock characteristics obtained during geotechnical drilling investigation. Weathered material makes up about 5% of the total ore material, therefore it is assumed that drill and blast will be used for all material types. It is anticipated that there will be minimal or no water issues for drilling and blasting controls.
A 500-metre blast exclusion zone will be maintained around the pit, with no permanently occupied residences or facilities within the zone. Approximately 250 tonnes of high-energy fuel (HEF) emulsion or ammonium nitrate (AN) will be stored in silos within a fenced compound along with magazines for packaged explosives, initiation devices and blasting accessories. Construction of the magazines will meet the criteria as specified in the Malawian Explosives Act. Secondary movements wi ........
Source:
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Flow Sheet:
Summary:
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Reserves at July 11, 2018:
Cut-Off Grade = 1500 ppm Nb2O5
Mineral Resources are reported inclusive of Mineral Reserves.
Category | Tonnage | Commodity | Grade | Contained Commodity |
Proven
|
5.3 Mt
|
Nb2O5
|
3680 ppm
|
19,504 t
|
Proven
|
5.3 Mt
|
Ta2O5
|
171 ppm
|
906 t
|
Probable
|
28.5 Mt
|
Nb2O5
|
2930 ppm
|
83,505 t
|
Probable
|
28.5 Mt
|
Ta2O5
|
136 ppm
|
3,876 t
|
Proven & Probable
|
33.8 Mt
|
Nb2O5
|
3048 ppm
|
103,009 t
|
Proven & Probable
|
33.8 Mt
|
Ta2O5
|
141 ppm
|
4,782 t
|
Measured
|
5.3 Mt
|
Nb2O5
|
3770 ppm
|
19,981 t
|
Measured
|
5.3 Mt
|
Ta2O5
|
180 ppm
|
954 t
|
Indicated
|
47 Mt
|
Nb2O5
|
2860 ppm
|
134,420 t
|
Indicated
|
47 Mt
|
Ta2O5
|
135 ppm
|
6,345 t
|
Inferred
|
16 Mt
|
Nb2O5
|
2430 ppm
|
38,880 t
|
Inferred
|
16 Mt
|
Ta2O5
|
120 ppm
|
1,920 t
|
Total Resource
|
68.3 Mt
|
Nb2O5
|
2830 ppm
|
193,281 t
|
Total Resource
|
68.3 Mt
|
Ta2O5
|
135 ppm
|
9,219 t
|
Corporate Filings & Presentations:
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