Kallak - Iron Ore
Discovered in the 1940s, the Kallak magnetite iron ore deposit is located about 40km west of the Jokkmokk municipality centre in the County of Norrbotten in Northern Sweden. Kallak was designated, in February 2013, by the Swedish Geological Society as an Area of National Interest for minerals, affording it protection against competing land use and measures that may hinder future potential mineral extraction.
The latest resource statement published on the 25 May 2021 identified:
- A PERC Measured and Indicated Mineral Resource of 132 Mt grading 27.8% iron
- A PERC Inferred Mineral Resource of 39 Mt grading 27.1% iron
- A combined Exploration Target of between 73 Mt and 218 Mt grading between 20% Fe to 30% iron
The Company’s most advanced project is the Kallak iron ore asset in northern Sweden from which testwork has produced a ‘market leading’ magnetite concentrate of 71.5 per cent iron content. In the Kallak area, 389 million tonnes of iron mineralisation have been estimated, a potential source of high-quality iron ore for fossil-free steel making in Norrbotten for decades to come.
The Kallak deposit has excellent local infrastructure with all-weather gravel roads passing through the project and forestry tracks allowing for easy access throughout the licence. A major hydroelectric power station, with associated electric power-lines, is located only a few kilometres to the south east. The nearest railway (the ‘Inland Railway Line’) passes approximately 40km to the east. The line is connected at Gällivare with the ‘Ore Railway Line’, which is used by Luossavaara-Kiirunavaara (“LKAB”) for delivery of its iron ore material to the Atlantic harbour at Narvik (Norway) or to the Botnian Sea harbour at Luleå (Sweden).
A September 2017 report by Copenhagen Economics titled ‘Kallak – A real asset, and a real opportunity to transform Jokkmokk’ highlighted the potential positive economic impact of the project on Jokkmokk, and Norrbotten County. Some key highlights:
- Kallak has the potential to create 250 direct jobs and over 300 indirect jobs in Jokkmokk, over the period that a mine is in operation.
- These jobs could be sustained over a period of 25 years or more.
- Kallak has the potential to generate SEK 1 billion in tax revenues, considering the case where 70 per cent of the mine’s workforce are based locally, with annual tax revenues of SEK 40 million over a 25 years mine life.
- These tax revenues would help to develop and sustain public services and infrastructure in Jokkmokk, which are at risk due to a lack of new investment and job creation in the community, a declining population, and an ageing population.
The study builds on the work carried out by the Company and others, including the 2015 independent socio-economic study initiated by Jokkmokks Kommun, completed by consultants Ramböll, and the 2010 study by the Economics Unit of Luleå University of Technology, ‘Mining Investment and Regional Development: A Scenario-based Assessment for Northern Sweden’. The socio-economic study initiated by Jokkmokks Kommun concluded that a mining development at Kallak would create direct and indirect jobs, increase tax revenues and slow down population decline. As well as revisiting the work done by Ramböll and LTU and reminding stakeholders of Kallak’s economic potential locally, regionally, and nationally, the study also details the Company’s philosophy on what needs to happen to ensure Kallak is a success, and Jokkmokk maximises the benefits it receives.
Kallak is located within the Svecofennian shield, consisting of metamorphic, sedimentary and volcanic rocks that are commonly between 1900 and 1870 million years old. The area around Kallak is dominated by mafic to intermediate metavolcanics rocks, as well as gabbro, diorite, ultramafic rocks and their metamorphic equivalents. The iron deposits are outcropping and consist of quartz, banded magnetite haematite iron ore, comprised of fine grained magnetite and minor haematite, interlayered with quartz, feldspar and some hornblende. The dominant host rock is a grey altered volcanic unit.
The Kallak North and Kallak South orebodies are centrally located and cover an area approximately 3,700m in length and 350m in width, as defined by drilling. The mineralised structures at both Kallak North and Kallak South are almost vertically dipping, generally covered by shallow glacial overburden and, as such, are highly amenable to open pit mining. The mineral resource estimate for Kallak North and South is based on drilling conducted between 2010-2014, a total 27,895m was drilled, including 131 drill holes. The latest resource statement for the Kallak project was finalised by Baker Geological Services Ltd (“BGS”) on the 25 May 2021, following the guidelines of the Pan-European Reserves and Resources Reporting Committee (“PERC”) Standard for Reporting of Exploration Results, Mineral Resources and Mineral Reserves. Summary as follows:
| Deposit | Classification | Million Tonnes | Density | Fe % | FeO % | SiO2 % | Al2O3 % | P % | S % |
|---|---|---|---|---|---|---|---|---|---|
| KN | Measured | 16 | 3.5 | 33.6 | 10.5 | 43.4 | 2.9 | 0.04 | 0.002 |
| Indicated | 95 | 3.3 | 27.0 | 7.1 | 49.8 | 4.5 | 0.03 | 0.002 | |
| Sub-Total | 111 | 3.3 | 28.0 | 7.6 | 48.9 | 4.3 | 0.03 | 0.002 | |
| Inferred | 24 | 3.4 | 28.3 | 7.8 | 48.1 | 4.2 | 0.04 | 0.002 | |
| KSN | Measured | ||||||||
| Indicated | 20 | 3.3 | 26.9 | 7.2 | 49.3 | 4.9 | 0.04 | 0.003 | |
| Sub-Total | 20 | 3.3 | 26.9 | 7.2 | 49.3 | 4.9 | 0.04 | 0.003 | |
| Inferred | 6 | 3.2 | 23.4 | 6.5 | 50.1 | 6.6 | 0.05 | 0.004 | |
| KSS | Measured | ||||||||
| Indicated | |||||||||
| Sub-Total | |||||||||
| Inferred | 8 | 3.3 | 26.1 | 12.0 | 50.1 | 5.2 | 0.05 | 0.009 | |
| Total | Measured | 16 | 3.5 | 33.6 | 10.5 | 43.3 | 2.9 | 0.04 | 0.002 |
| Indicated | 115 | 3.3 | 27.0 | 7.1 | 49.7 | 4.6 | 0.03 | 0.002 | |
| Sub-Total | 131 | 3.3 | 27.8 | 7.5 | 48.9 | 4.4 | 0.03 | 0.002 | |
| Inferred | 39 | 3.3 | 27.1 | 8.5 | 48.8 | 4.8 | 0.04 | 0.004 |
(1) Mineral Resources, which are not Mineral Reserves, have no demonstrated economic viability.
(2) The effective date of the Mineral Resource is 9 May 2021.
(3) The Open Pit Mineral Resource Estimate was constrained within lithological and grade-based solids and within an optimised pit shell defined by the following assumptions; base case metal price of USD130 / tonne for a 65% Fe concentrate; Fe recovery of 71% at Kallak North, 86% at Kallak South North and 94% at Kallak South South; Fe concentrate grades of 68% at Kallak North, 70% at Kallak South North and 69% at Kallak South South; Processing costs of USD6.8 / t wet; Selling cost of USD21.0 / t wet concentrate; Mining cost of Ore of USD3.3 / t, mining cost of waste of USD3.0 / t and an incremental mining cost per 10 m bench of USD0.05 / t; Wall angles of 30° within the overburden and 47.5° in the fresh rock.
(4) Mineral Resources have been classified according to the PERC Standards 2017, by Howard Baker (FAusIMM(CP)), an independent Competent Person as defined in the PERC Standard 2017.
In total, BGS has derived a Measured and Indicated Mineral Resource of 132 Mt grading 27.8% Fe, 7.5% FeO, 48.9% SiO2, 4.4% Al2O3, 0.03% P and 0.002% S.
BGS has also defined an Inferred Mineral Resource of 39 Mt grading 27.1% Fe, 8.5% FeO, 48.8% SiO2, 4.8% Al2O3, 0.04% P and 0.004% S.
The pit optimisation undertaken shows a strip ratio of 1 ore tonne for every 1.22 waste tonne.
Comparison to Previous 2014 MRE
The previous Geovista 2014 MRE reported an Indicated Mineral Resource of 118 Mt at 27.5% Fe and an Inferred Mineral Resource of 33.8 Mt at 26.2% Fe. This compares to the BGS 2021 MRE, a combined Measured and Indicated Mineral Resource of 132 Mt at 27.8% Fe and an Inferred Mineral Resource of 39 Mt at 27.1% Fe.
This equates to an increase of 19 Mt in the upgrade reported herein for approximately the same Fe grade. The quantity of Inferred Resource is approximately the same and the upgrade includes a portion of the resource declared in the Measured category. This was considered appropriate due to recent Davis Tube testwork increasing the knowledge of the project’s mineralisation styles.
Geovista also undertook a pit optimisation exercise to report the final Mineral Resource Statement for Kallak and it is likely that the difference in assumptions may account for the overall tonnage difference between the 2014 and 2021 MREs.
Locations of the KN, KSN and KSS targets. a) plan view, b) looking east, c) oblique view, looking northeast. Coloured by geological domain.
While external observers were expecting higher maiden resource tonnages for Kallak South, it is worth pointing out that the 2014 drilling programme for Kallak South focused on defining the potential extent of the orebody. The geophysical magnetic signature of mineralisation, evidence of the presence of magnetite, extends through the gap giving confidence for an exploration target, but insufficient drilling precludes any additional resource classification.
On 22 March 2022, the Minister of Enterprise and Innovation, The Government of Sweden announced the award of the Concession for Kallak North; attached to the decision were 12 conditions for the Company to comply with. The Company’s legal advisers have reviewed the Government’s decision and the conditions attached to it and are satisfied that, with respect to the conditions, they include matters the Company would naturally expect to address in project development and the Environmental Court process.