Sala – Lead-Zinc-Silver
The Sala nr 10 licence area covers 1,049ha and is in Vӓstmanland County, southern Sweden. The licence is prospective for lead-zinc-silver mineralisation and is situated 200m west of the former Sala silver mine.
The Sala mine was once Europe’s largest silver producer, in continuous production between the late 15th century and 1908, and was known for having some of the richest silver ores in the world. Mining records show that Sala was mined to a depth of approximately 300m, with mineralisation remaining open at depth. Further mining continued in 1950-51 and between 1945-62 at the adjacent Bronas mine.
Sulphide mineralisation in the area is carbonate hosted, occurring dominantly as silver-bearing lead sulphide (galena), and zinc sulphide (sphalerite), and to a lesser extent as complex antimonides, sulphosalts and native silver.
The licence area has seen previous drilling between 1984-1985 by Boliden and between 2008-2009 by Tumi Resources Ltd. This previous drilling discovered a new lead-zinc-silver mineralised zone 200m directly west and parallel to the Sala silver mine, Sala West. A total of 20 holes and 6785.9m of drilling have been completed at Sala West.
During its exploration drilling, Tumi estimated an exploration target of 4–5 million tonnes at 2.2-5% zinc and 35–95ppm silver. The exploration target lies within a 60m wide zone striking roughly north northwest south southeast. The mineralisation has been intersected by drilling 640m along strike and to a depth of 400m. The exploration target remains open along strike and at depth.
It should be noted that the exploration target has not been the subject of technical evaluation at this stage, and insufficient verification studies have been undertaken, to date, by either Beowulf or the Competent Person to assign confidence to this estimate and this information is disclosed as reflecting project potential only.
Historic drill results include:
- Drill hole SAA08-003; 37.2m estimated true width, at 6.1% zinc, 50 ppm silver, 0.3% lead from 393.5m
- SAA08-003; 15.9m estimated true width, at 4.2% zinc, 157 ppm silver, 0.6% lead from 439.7m