• Date: 2023
  • Address: Zimbabwe

Arcturas Lithium Project Technical Report

MGA’s primary focus will be on advancing the Arcturas and Beatrice lithium projects in Zimbabwe. The Arcturus Lithium project lies within one of the well-known lithium camps, approximately 35km east of Harare.

A total of five (5) lithium claims are packaged in the Arcturas Lithium Project (ALP). These claims are within the Goromonzi lithium belt. The Arcturus Lithium project lies within one of the well-known lithium provinces.

The high potential Arcturas Lithium project is in very close proximity to the Arcadia lithium producing mine owned by the Chinese mining company Zhejiang Huayou Cobalt (“Huayou”). Huayou purchased the Arcadia mine in 2022 for USD$422M.

The nature and location of the port of Beira is also a key advantage. A regional export hub located less than 600km from the licence area by road transport. The project is very close to current existing road and access tracks.

Figure 1: Zimbabwe Arcturas Lithium Project Location.

The Arcadia Lithium project is situated approximately 38km east of Harare in Zimbabwe. This area is very close to Arcturas Lithium project. The Arcturas project is close to major highways and railheads, with the Beira Port in Mozambique less than 600km away by rail/ road transport. Its location as a regional transport hub serves the project well.

The geology of the greater Arcadia area is dominated by greenstone lithologies of the Arcturus Formation of the Harare Greenstone Belt (HGB). These greenstones are encircled and intruded by a variable suite of granitic rocks, the oldest of which may have been intruded at a similar time with the youngest felsic volcanic rocks of the belt. There is also some evidence of a small remnant area of gneissic basement to greenstone belt.

The main HGB lithological units comprise mainly meta-basalts, banded iron formation, meta-andesites, serpentinites, dolerites and the lithium bearing pegmatite that also host beryl, tin and tantalite amongst others

The lithology of the Arcadia lithium project includes greenstone rock units of the Arcturus formation, a part of the Harare Greenstone Belt (HGB). The greenstone belt is a complex refolded sync formal structure, cropping out as two major limbs, including an east-west trending Arcturus Limb and a north-south trending Passaford Limb.

Figure 2: High Grade Advanced Lithium Asset

“The Arcadia lithium project located near Arcturas lithium project, it is considered to be one of the world’s biggest hard rock lithium resources.” The lithological units found at the belt include meta-basalts, banded iron formations, meta-andesites, serpentinites, dolerites, and lithium-bearing pegmatites. The deposit is hosted within a series of stacked, subparallel petalite-spodumene bearing pegmatites, intruding the HGB. The drilling results identified pegmatites with an average thickness of 15m and extending up to 3.5km along strike.

Most of the economic lithium mineralisation found at Arcadia is made up of petalite and spodumene. The crystallisation of petalite is expected to have occurred prior or co-genetically with primary spodumene. Secondary mineralisation is believed to have occurred by the conversion of primary petalite and spodumene to spodumene, quartz intergrowth, and eucryptite.

The presence of significant caesium concentrations more than 40ppm from soils around the pegmatite-bearing Shabaash lepidolite was demonstrated by the satellite bodies at the Arcadia mine.

Figure 3: Flat lying pegmatite Arcadia lithium producing mine

The Arcturas prospect is close to the Arcadia lithium and Arcturus Gold mine. It is the most well-known pegmatite camps in the area that are mineralised in lithium, lepidolite, beryllium, tantalum and caesium.

Figure 4: Arcturas lithium project location plan

Extensive exploration and mining activities were carried out within the project area. Based on the Company’s review of existing publicly available information (including historic exploration, trenching and production history) the project has the potential for a large tonne open cut mine.\

The Company has an Exploration Target of 18-22 million tonnes with grades ranging from 1.5-2.5% Li2O.

Recent rock chip sample assay results from Arcturas are up to 2.5% Li2O. These samples are from a surface outcrop of pegmatite.

Figure 5: Historical exploration and mining activities within the Arcturas lithium project

The Arcturas Lithium deposit has been the subject of historic drilling, exploration, and production HOWEVER, the Company has not undertaken a detailed exploration programme nor a drilling programme.

The Exploration Target is based on previously published data around the mining area. The potential quantities and grades are conceptual in nature and there has been insufficient exploration to date to define a Mineral Resource. It is not certain that further exploration will result in the determination of a Mineral Resource under the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves, the JORC Code” (JORC 2012).

The Zimbabwe assets could be developed independently, depending on the results of exploration and mineral resource delineation. The Zimbabwe assets cover significant pegmatite outcrops and extend up to 1.5km with 3m to 10m thick flat laying multiple beds mineralised pegmatite and artisanal mine workings for lithium.

Figure 6: Surface outcrop of Spodumene Pegmatite
Figure 7: Surface outcrop of pegmatite and flat laying structure.
Figure 8: Surface outcrop of flat lying pegmatite, 1km strike length and 15m wide.