The SILVER BOSS occurrence is located in the headwaters of Moffat Creek, 1 kilometre north of the peak of Big Timothy Mountain and 82 kilometres east of the city of Williams Lake.

Regionally, the area is underlain by gabbroic to dioritic rocks of the Buster Lake unit and granodioritic intrusive rocks of the Boss Creek and Schoolhouse Lake units of the Late Triassic to Early Jurassic Takomkane Batholith, which have intruded basaltic volcanic rocks of the Upper Triassic Nicola Group. These have in turn been intruded and are locally overlain near the summit of Big Timothy Mountain by basaltic volcanic rocks of the Pleistocene Wells Gray volcanics.

Locally, at the main Silver Boss zone, a 0.5- to 2.0-metre wide zone of faulted, sheared, brecciated and altered granodiorite (Boss Creek unit) hosts a vuggy quartz, breccia and stockwork quartz vein system with pyrite, chalcopyrite, arsenopyrite, pyrrhotite, galena and sphalerite. Scheelite and molybdenite mineralization have been identified in float and/or subcrop. The sheared and quartz-veined zone strikes north 45 degrees east and dips steeply to the southeast with individual veins varying from 2 to 20 centimetres in width with Prior to 1920, mineralization typically associated or proximal to andesite dikes. Alteration minerals include chlorite, epidote, sericite, clay, limonite, malachite and azurite. The mineralized zone has been traced along strike for approximately 350 metres.

Another zone of mineralization, referred to as the East Breccia zone, is located approximately 300 metres east of the Silver Boss shaft in the headwaters of 10 Mile Creek and at an elevation of approximately 1980 metres. The zone comprises a strongly epidote-altered hornblende diorite breccia hosting quartz veins with chalcopyrite, pyrite and specularite. The veins strike 146 degrees and dip steeply to the northeast.

On the Peridot claim, located near the summit of Big Timothy Mountain, olive-green–coloured crystalline mineral, up to 3 millimetres long and tentatively identified as chrysolite (olivine), occurs in amygdaloidal cavities in a basaltic lava. Associated with the chrysolite is a yellow to brick-red mineral, tentatively identified as stilbite.

Prior to 1920, a sample taken approximately 450 metres east and 270 metres below the shaft, presumably from the area of the East Breccia zone, assayed 16.6 grams per tonne gold and 136.8 grams per tonne silver across a 1.2-metre shear zone (Property File - Exeter Mines Ltd. [1970-06-10]: Prospectus Report on the Big Timothy Mountain Project - Silverboss, S.B. and Gus Claims).

Prior to 1920, a picked sample of ‘ore’ from the shaft is reported to have yielded 11.6 grams per tonne gold, 684.0 grams per tonne silver, 2.0 per cent copper, 25.0 per cent lead and 20.0 per cent zinc, whereas a sample taken north of the shaft assayed 72.8 grams per tonne gold, 1026 grams per tonne silver with 18.5 per cent copper (Property File - Exeter Mines Ltd. [1970-06-10]: Prospectus Report on the Big Timothy Mountain Project - Silverboss, S.B. and Gus Claims).

In 1966, a sample of dump material from the shaft assayed 0.7 gram per tonne gold, 581.4 grams per tonne silver and 3.02 per cent copper (Property File - Exeter Mines Ltd. [1970-06-10]: Prospectus Report on the Big Timothy Mountain Project - Silverboss, S.B. and Gus Claims).

In 1968, a grab sample taken from the shaft area assayed 9.6 grams per tonne gold, 231.2 grams per tonne silver and 6.50 per cent copper (Property File - Exeter Mines Ltd. [1970-06-10]: Prospectus Report on the Big Timothy Mountain Project - Silverboss, S.B. and Gus Claims).

In 1984, a sample (1357) from the adit dump assayed 3.7 grams per tonne gold, 619.0 grams per tonne silver and 11.95 per cent copper (Property File - E. Trent Pezzot [1985-04]: Notes, Letter and Claim Maps - Big Timothy Mountain).

In 1993, seven rock samples collected over 1.0 metre of an old trench (No. 4) yielded values up to 2.26 grams per tonne gold and 37.6 grams per tonne silver, whereas samples of rubble from trench dumps yielded up to 9.65 grams per tonne gold, 628.6 grams per tonne silver and 3.49 per cent copper (Assessment Report 23677).

In 1994, sampling of former trenches yielded up to 9.41 grams per tonne gold, 514.6 grams per tonne silver and 1.84 per cent copper from a 25-centimetre wide quartz-sulphide vein in trench 8; 4.26 grams per tonne gold and 64.6 grams per tonne silver over 0.5 metre in trench 4 and 3.18 per cent copper, 390.4 grams per tonne silver with 0.22 gram per tonne gold over 0.5 metre in trench 10 (Assessment Report 23677).

In 1995, a select grab sample (DR12) of vein material assayed 1.241 grams per tonne gold, 41.4 grams per tonne silver and 2.48 per cent copper, whereas a chip sample of altered wallrock assayed 0.218 gram per tonne gold over 2.0 metres (Assessment Report 24208).

In 2004, a select grab sample from the Silver Boss shaft dump assayed 6.7 per cent copper, 443.0 grams per tonne silver and 2.92 grams per tonne gold (Assessment Report 27755).

From 2005 through 2014, soil and rock sampling programs carried out by Happy Creek Minerals Ltd. identified several zones of elevated copper, molybdenum, tungsten, gold and silver in soil that occur well beyond the known molybdenum deposits, including the Horse Trail zone, extending westward from the Boss Mountain mine’s molybdenum deposits and the East Breccia zone and Silverboss Shaft zone located northwest of the mine. Outcrops of quartz veins in these areas also contain elevated copper, molybdenum, gold and silver values. On both grids, the IP survey returned moderate to strong chargeability values located beneath the positive surface samples. In the Silver Boss (South Ridge) area, 1 to 2 kilometres south of the Boss Mountain mine, prospecting, geological mapping and rock sampling in 2014 found a zone of mineralized granodiorite boulders of the Takomkane Batholith. One more fractured and altered sample (SB-14-07) returned 0.52 per cent copper, 0.20 gram per tonne gold and 11 grams per tonne silver (Assessment Report 35308).

WORK HISTORY

The Silver Boss occurrence was reported first explored in 1915 and has been historically explored in conjunction with the nearby Boss Mountain (MINFILE 093A 001) past-producing mine. A series of trenches, pits and opencuts with a shaft and two adits were developed during 1915 through 1917.

In 1966, the Duval Corp. examined the property. During 1969 through 1971, Exeter Mines completed a program of prospecting, geological mapping, soil sampling, a 41.0 line-kilometre ground electromagnetic survey and five diamond drill holes, totalling 598.4 metres, on the area as the Gus, SB and Silver Boss claims. Drilling is reported to have intercepted ‘considerable’ chalcopyrite in a diorite host from holes nos. 4 and 5 near the Gus (MINFILE 093A 020) occurrence, whereas scattered pyrite and chalcopyrite were reported from the other three holes near the Silver Boss shaft and adit. No assays are known for the drillholes.

Also, in 1970 and 1971, Virgo Explorations (Cyprus Mines Ltd.) completed programs of soil sampling and a magnetometer survey on the area. In 1984, Enfield Resources Inc. examined the property.

During 1993 through 1995, the area was prospected and sampled as the Silver Boss and Peridote claims by Pioneer Metals Corp. In 2000, the area was prospected by D.W. Ridley.

Between 2005 and 2014, Happy Creek Minerals performed systematic soil and rock geochemical surveys and geological mapping. In 2012 the company completed line cutting grids and a three-dimensional induced polarization (3D IP) and magnetometer geophysical survey in the Horse Trail and Silverboss shaft areas located immediately west and northwest of the Boss Mountain mine, respectively. Sampling programs on the property re-commenced in 2021 and continued through 2024.