Southern Finland Gold

EMX’s  Southern Finland Au project  is comprised of the Haasiakangas, Paiskallio, and Tampere projects. These three orogenic-Au projects are approximately a 2hrs drive from the Helsinki Airport and are nearby three active gold mines. 


The regional geology consists of metamorphosed, Proterozoic rocks (1.9-1.8 Ga) dominated by meta-sediments, meta-volcanics and granitoid batholiths that are part of the Svecofennian orogeny. NS-subduction of both the Tampere Schist Belt (igneous arc) and the Pirkanmaa Migmatite Belt (accretionary complex) resulted in a complex, accretionary to collisional orogenic evolution. There are various genetic types of gold mineralization that include: 1) orogenic gold (majority of Au-occurrences), 2) epithermal gold (Orivesi deposit), 3) Au-rich VMS (Haveri deposit), and 4) porphyry/granitoid related Au-Cu. Mineralization appears to be syn0genetic to post-D1 and related to various stages of orogenic development.


In southwest Finland, the host rocks were metamorphosed under amphibolite-facies and are structurally controlled, often in secondary to tertiary shear zones. Mineralization occurred at peak deformation, post-dating the formation of the host rocks (1.89 – 1.87 Ga). Gold-only deposits consist of native gold with minor pyrrhotite>arsenopyrite>pyrite>löllingite and are most dominant in the Pirkanmaa Migmatite Belt and Tampere Schist Belt.


In the Tampere Schist Belt, most gold occurrences were discovered based on boulder hunting or till geochemistry by GTK. Work includes shallow historic drillholes, extensive till geochemistry, and various geophysical ground surveys (MAG, IP, and EM Slingram). Gold discovery within the Paiskallio Migmatite Belt was by an amateur prospector in 1997 reporting visible gold in quartz veins. Other work includes boulder and bedrock mapping by GTK, geochemical moraine sampling along roads, ground geophysics, and drill holes.


Exploration activities in the region were only conducted by GTK and ceased due to other priorities. Historic drill core is available for inspection at the town of Loppi. The trend of mineralization is unknown and there has been no modern or detailed/systematic exploration leaving the potential at a regional scale quite robust.


Note: The nearby mines provide geologic context for EMX’s Project, but this is not necessarily indicative that the Project hosts similar tonnages or grades of mineralization.
 

 

Maps

Location map of EMX Click to Enlarge
Simplified tectonic-stratigraphical model for orogenic Au in the Tampere-Pirkanmaa area Click to Enlarge

Photos

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