The Silver Spot Loc. 9 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 greenstone of the Devonian-Triassic Harper Ranch Group which is hosted by granodiorite and diorite of an unnamed Middle Jurassic intrusion.
The showing consists of several north-trending quartz veins that contain pyrite and minor amounts of galena and sphalerite. A 1930 report describes the vein as having been traced for 150 metres and it is speculated that the vein is a southern extension of the AU (MINFILE 082ENE027) vein. It is hosted by greenstone and associated with a quartz porphyry dike. The dike is about 3 metres thick and dips 40 degrees to the west. The vein commonly contains pyrite and, locally, minor amounts of galena and sphalerite. Gold and silver are also reported to have been obtained from the veins but assays are lacking. The vein width varies from approximately 30 to 90 centimetres. To the east, about 30 metres, is another quartz porphyry dike with an associated pyritic quartz vein. A few metres east of it is a north-trending shear with a quartz vein containing a little sulphide mineralization.
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. 9 to the Waterloo mine (MINFILE 082ENE017) 550 metres to the west, 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 was recorded on the Silver Spot Loc. 9 showing.
In 1974, K.L. Daughtry carried out a magnetometer survey over the Rhondda claim, which covered the AU (MINFILE 082ENE027) and Silver Spot Loc. 9 showings. 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.
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.
Later in 2012, Tower Resources completed a 1200-metre drill program that consisted of 11 drillholes.
