Soris

Overview

The Soris Lithium Project is located in central Namibia, north-west of the town Uis which is 220km north of Walvis Bay, Namibia’s largest commercial deep-water port. The project is in the Erongo Region and is connected by dirt and asphalt road to the port of Walvis Bay.

Montero has the opportunity, under the terms of a Letter of Intent (LOI), and subject to due diligence and regulatory approval, to acquire an 80% equity interest in the Soris Lithium Project. Under the terms of the LOI, Montero immediately earns an 80% interest in the Property by committing to spending C$1 million and completing a feasibility study in 3 years. 

Geology

The zoned pegmatites at the Soris Lithium Project belong to a group of highly fractionated, tantalite-cassiterite, lithium-rich rare metal pegmatites known as Lithium-Cesium-Tantalum (LCT) pegmatites. The Soris pegmatites were previously mined on a small scale for tin and tantalum (Diehl, 1992). The pegmatite has not previously been mined or systematically sampled or assayed for lithium.

The Soris pegmatite field are hosted in the metasedimentary units of the Damara Mobile Belt, the northeast-trending branch of the Neo-Proterozoic, Pan African Damara Orogen in Namibia. The zoned pegmatites at Soris belong to a group of highly fractionated, tantalite-cassiterite, lithium-rich rare metal pegmatites. Lithium mineralization occurs in the form of spodumene crystals developed virtually over the whole length of the pegmatite, although the relative abundance of spodumene varies from one location to another. Spodumene minerals of up to 80 cm long are observed inter-grown with quartz towards the pegmatite core zone.

Mineralogy

The Soris Project pegmatites encompasses several outcrops, varying in length between 100m up to 470m over a distance of 2.4 kms and has been measured in places to be more than 30 m wide. Between 1960 and 1990 the Soris pegmatites were mined on small scale for tin and tantalum with an estimated total production of 4 to 5 tonnes tantalite concentrate grading 54 to 61% Ta205 and near 4 tonnes of cassiterite concentrate grading 64% SnO2. More recent exploration for tantalum and tin, including RC (Reverse Circulation) drilling was undertaken until 2015. The pegmatite has not been mined or systematically sample assayed for lithium.

Recent field investigations by Montero revealed the pegmatite to host more than 30% spodumene by volume with values of up to 7.7 % Li2O obtained from grab samples. Further confirmatory work is planned as part of the due diligence.

Surface grab and trench sample and analysis of drill holes has confirmed the presence of anomalous lithium values as well as tantalum and tin in the pegmatite exposed at surface and intersected at depth by drilling. Montero has also analyzed for cesium and rubidium.

The assay results confirm that lithium bearing spodumene mineralization sampled at the surface is continuous in places within the pegmatites and extends to depth in the Main Workings zone of the old tantalum-tin mine.

Mineralogical, analytical and X-ray analysis of the pegmatite mineralisation has confirmed the presence of spodumene as the main lithium mineral.

Mapping and sampling of the pegmatites exposed over a strike length of 2.4 km demonstrate anomalous lithium, tantalum and tin values in the pegmatites exposed. Although sampling has not been extensive and therefore there is no reliability to these results or observations. Montero continues to evaluate the lithium, tantalum and tin values in the pegmatite.