The SIF occurrence is located 7.5 kilometres north of Trout Lake off Highway 31 and approximately 25 kilometres northeast of Galena Bay.
Regionally, the area is underlain by a thick succession of sedimentary and volcanic rocks of the Badshot Formation and the Lardeau Group.
Locally, the property is underlain by the Broadview Formation of the Lardeau Group. Mineralization is hosted within quartz veins, greywacke, and phyllite of the middle division of the Broadview Formation. For more detail on regional and local geology, and structure, refer to True Fissure (L.1097) MINFILE 082KNW030.
The SIF Zone mineralization represents a new mode of mineralization at Thor. The gold is restricted to large, white quartz veins exceeding three metres in thickness that appear to be devoid of any other minerals of economic interest. The visible gold occurred as flaked lining within vugs and nucleation growing within and adjacent to unidentified black sulphide minerals within massive white quartz veins. It creates a unique "cherty-exhalite" style of gold mineralization.
The SIF occurrence occurs within the upper portion of the unexplored quartz-rich Scab Zone and covers an area over 300 metres in strike length between the Great Northern Zone to the south and the St. Elmo Zone and Blue Bell Zone to the north. The siliceous nature of this zone forms a major hillside “plated” with the quartz-rich, weathering-resistant zone. This gold-bearing, siliceous style of mineralization is unique compared to the other zones at Thor.
In 2012, Taranis Resources Inc. conducted a total field, gradiometer and VLF-EM geophysical surveys across the property containing the occurrence. Soil sampling was conducted over the Great Northern Grid, and the Meadow Grid. Anomalies from the surveys were coincident with geophysical, and historical work. Geological mapping found five zones on the Thor property. Thor property. The SIF Zone, Gold Pit Occurrence, Scab Zone, Antiform Zone, and Great Northern Footwall Zone.
The 2012 exploration program on the Thor property included grab sampling that found multiple samples with significant mineralization. Highlighted results include sample number 862385 grading 90.1 grams per tonne gold, and 12.2 grams per tonne silver, sample number 862384 grading 2.71 grams per tonne gold, and 92.0 grams per tonne silver, and sample number 862392 grading 2.96 grams per tonne gold, and 2,793 grams per tonne silver (McDonough, B. (2013-06-03): Technical Report on the Thor Project, British Columbia, Canada).
The Scab Zone lies topographically below and east of the SIF Zone within the same mineralized horizon. The St. Elmo silver-rich mineralized body lies to the northwest and the True Fissure Zone to the southeast. Grab samples were taken in 2012 over an area approximately 230 by 290 metres which included the SIF Zone. Most of the mineralization was found with quartz-sulphide breccia and quartz-rich rock (McDonough, B. (2013-06-03): Technical Report on the Thor Project, British Columbia, Canada).
