The STU area is situated on the north side of the Iskut River, approximately 56 kilometres southwest of Bob Quinn Lake (Highway 37) and 106 kilometres northwest of Stewart, B.C.
The Stu area is underlain by dark green intermediate lapilli tuff and volcanic breccias of the Upper Triassic Stuhini Group. These are intruded by intermediate intrusives, including potassium feldspar porphyritic intrusive rock of unknown age.
High grade gold-bearing quartz veins occur within lapilli tuff. Individual mineralized veins vary from 1 to 20 centimetres in width and occur within a dark green intermediate volcanic breccia or lapilli tuff. The veins have been observed in outcrop over approximately 5 metres strike length to overburden. A select grab sample assayed 85.30 grams per tonne gold, 11.5 grams per tonne silver and 0.02 per cent copper (Sample 42551, Assessment Report 21051). Another sample yielded 0.18 per cent copper, 16.67 grams per tonne gold and 9.6 grams per tonne silver (Sample 42555, Assessment Report 21051).
Consolidated Sea Gold Resources spent three man-days prospecting the Stu 8 & 9 mineral claims during October 1987. Three rock chip samples were collected (Assessment Report 17131).
In 1990 a modest exploration program consisting of contour soil sampling (389 samples), geological mapping, prospecting (24 rock samples) and establishment of a cut baseline through the centre of the property was carried out on Consolidated Sea Gold Resources’ Stu 8 and 9 mineral claims.
In 2016 Colorado Resources Ltd. completed a small program of rock sampling on the Stu property, confirming there are high grade gold-bearing quartz veins. Two grab samples of quartz veins produced results of 17.9 and 10.1 grams per tonne Au and 9.1 and 4.2 grams per tonne Ag (Assessment Report 36289).