Großarl

Salzburg, Austria

Project Overview

The Großarl Project is located in Salzburg, Austria, covering the southern part of the Großarl Valley and the ridge between Großarl and Bad Gastein municipalities. The license area covers six key targets that were mined industrially in the past.
The Großarl Valley features extensive stratiform pyrite-chalcopyrite mineralization within a volcanosedimentary sequence dominated by black phyllites and green metabasalts.

Project Highlights

  • 62 rock chip samples collected to date in initial prospecting and sampling, with initial assay results returning up to 5.06% Cu and 1.02 g/t Au.
  • 25 of the 62 analyzed samples reported >0.5% Cu.
  • Initial prospecting identified two brand new mineralized targets not covered in any historical literature, of which one produced samples returning grades of 3.71% Cu and 1.02 g/t Au.
  • Digitization and 3D modelling of the historical data and mine plans completed in 2023 suggests the ore systems may be larger than previously understood.

Großarl
Factsheet

Area Acess

Road access and hiking trail access is generally good, with roads maintained by the Budesforste (Forestry Service). Most historical mine sites and outcrops can be reached by 4WD vehicle and/or on foot, with the exceptions of Kree area in the southeastern part of the licence and Himmelwand near Bad Hofgastein which will rely on helicopter access, should they merit further investigation.

Geographic Coverage

The Großarl licence area covers 6 key targets in Land Salzburg which were industrially mined in the past, these include. The licences are covering southern part of Großarl valley and the ridge between Großarl and Bad Gastein municipalities. Exploration licence terminates on the boundary of Hohe Tauern National Park in the south. The licences are in the mountainous terrain, in elevations ranging from about 900 mRL down in the Großarler-Ache valley up to 2467mRL at Gamskarkogel on west side of the licence and 2432mRL Glingspitze on east side of the licence.

History

Mining activity in Großarl area dates back to the 11th century with the earliest mining reported at the ‘Schwarzwand’ prospect. Mining focused on extraction of pyrite rich ore as a source of sulphur. Copper was likely recovered as a by-product after sulphur extraction. Peak production was recorded in 14th and 17-18th centuries. The most important centres of historical mining in Großarl area were Karteis, Schwarzwand and Tofern. Most of the mines were shut down by the end of 19th century, Weber (1997) estimates total copper production from all mines in the Großarl Valley to 6500t with an average copper by-product content of 1.4 %. Several prospects in the Großarl Tal were evaluated in 1947 by the Studiengesellschaft Kiesbergbau. More recently, the Schwarzwand ‘Unterbau im Thal’ adit was open to the public as a tourist attraction.

Geology

Ore Hosting

Elongated, lenticular ore bodies following regional foliation

Host Rock

Metavolcanites – Tuffs and tuffites

Primary Mineralogy

Pyrite, chalcopyrite

Associated Mineralogy

Bornite, gold, pyrrhotite, malachite, magnetite

Featured Sample

Project Hypothesis

Work Completed

In 2023 Ekometall Exploration began assessment work across the Großarl licence area. The primary goal of this was to understand if the historically mined copper and gold systems could be economic for modern development.

Phase 1 of the assessment involved the digitisation and 3D modelling of significant historic data sets from the Geosphere & Land Salzburg Archives. This was completed by Kayleigh Barrow (GIS Manager), with support from Jennifer Epstein (Geologist) & Paula González Pizarro (GIS assistant).

By following the descriptions, maps and cross-sections left by the skilled miners who worked in the valley in the past, the team were able to make loose estimations of the size of the exploited orebodies and confirm that, as predicted, the in-ground potential was greater than reported by the ‘Geologische Bundesanstalt – Archiv für Lagerstätten Forschung’, a famous study completed by the Austrian Geological Survey in 1997 as a compilation of Austria’s mineral resources.

Phase 2

Phase 2 of the assessment involved launching a ‘trial campaign’ of field work, to suitably judge community sentiment, logistics and the viability of operating Austria’s first modern, regional scale and systematic exploration campaign for base metals.

Our first community meetings were held with local mayors, Bundesforste and community representatives between May & June 2023, where EMEX received approval to complete non-intrusive surface work from all relevant/impacted landowners and representatives.

A small team of geologists led by Peter Zitnan (Senior Geologist) sampled and mapped across the Großarl Valley from June through to August 2023.

Summary

Following the 2023 campaign, EMEX consider the Großarl Valley to be prospective for an appropriately sized copper-gold discovery of high-grade ore.

Community

While scepticism exists in the community, we do not believe a well-managed underground development here would interfere with the local environment, tourism, or community and could be realistic for future development.

Planned Work Program

With the 2023 results received at Grossarl and the 2024 field season underway at Panzendorf and Kelchalpe, Ekometall plans to evaluate its project portfolio following the completion of the current field season to plan the next steps at Grossarl and its other projects. Potential next steps at Grossarl include:

  • Soil Orientation Surveys and Sampling
  • Structural / Geological Mapping
  • Airborne Geophysics – Pending results from further deposit style investigation and geological mapping

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