The Silver Spot Loc. 8 showing is located on the north side of the informally named Silver Spot Creek, approximately 2.75 kilometres northwest of Lightning Peak.
The showing occurs in limestone, schist and meta-volcanic rock of the Devonian-Triassic Harper Ranch Group which is hosted by granodiorite and diorite of an unnamed Middle Jurassic intrusion.
The showing consists of a north-trending shear zone with quartz veins that contain minor amounts of grey copper (tetrahedrite), galena and pyrite. A 1930 report describes the Silver Spot vein as having been exposed for 90 metres by 3 trenches and an adit. The adit, which is located 45 metres north of the creek, is 20 metres long and it intersected the vein 10 metres from the portal. The vein strikes north and dips steeply to the west. Little mineralization was observed in the adit vein; but where the vein is exposed in the creek bed, it contains grey copper, galena and pyrite. The shear has formed in Harper Ranch metasedimentary rocks which are well-bedded and dip about 60 degrees to the northeast.
The Lightning Peak area has seen extensive exploration since the early 1900s, with most of the exploration effort directed at the numerous polymetallic, shear zone hosted quartz veins in this camp. The close proximity of the Silver Spot Loc. 8 to the Waterloo mine (MINFILE 082ENE017) 400 metres to the northwest, has resulted in it being included in many of the programs covering the Waterloo mine property. In 1966, Bralorne Pioneer Mines Limited carried out a geochemical survey of the Waterloo mine and surrounding area. They were able to identify the known veins on the mine property where they are covered by overburden.
From 1968 to 69, International Mine Services Ltd. carried out geochemical and geological surveys and a diamond drill program on the adjacent Waterloo mine property. No work on the Silver Spot Loc. 8 was recorded.
In 1974, K.L. Daughtry carried out a magnetometer survey over the Rhonda claim, which covered the AU (MINFILE 082ENE027) and Silver Spot Loc. 9 (MINFILE 082ENE026) showings, approximately 500 metres to the north and 250 metres to the northeast, respectively. The survey identified lithological contacts but provided little information about shear zones.
In 1978, W.G. Botel carried out a 16.9 kilometre VLF-EM survey over the area. Known shear zones and some possible projections were identified.
In 2011, Tower Resources optioned the property and completed a program of geological mapping and sampling from outcrops, trenches and dump piles located near old workings. New areas of precious-metal–enriched rocks were also identified during this work. The 39 samples, collected over an area of 4 by 1.3 kilometres, average 112 grams per tonne silver and 0.9 gram per tonne gold (http://www.towerresourcesltd.com).
In early 2012, Tower Resources conducted a predrilling exploration program consisting of geological mapping, prospecting, ground magnetic and VLF (very-low-frequency) electromagnetic surveys and confirmation soil geochemistry. Highlights of this sampling program include a grab sample from the Waterloo mine (MINFILE 082ENE017) that yielded 32.2 grams per tonne silver and 6.06 per cent zinc (Press Release, Tower Resources, November 21, 2012).
Later in 2012, Tower Resources completed a 1200 metre drill program that consisted of 11 drillholes. Hole WL-12-011 was a highlight of this program and assayed grading 181.9 grams per tonne silver and 3.08 per cent zinc over a true width of 0.5 metres (Press Release, Tower Resources, December 4, 2012).
