The Fergus (L.977)-Florence M (L.3350) occurrence is located at an elevation of approximately 880 metres on an east-facing slope, south of Lendrum Creek and approximately 4.4 kilometres north-northwest of Ainsworth.

Regionally, the area is underlain by hornblende schists, limestone and banded quartzite of the Upper Mississippian to Permian Milford Formation and basaltic volcanic rocks of the Carboniferous to Permian Kaslo Group. Granodioritic intrusive rocks of the Middle Jurassic Nelson Batholith are exposed to the west.

The workings on the Florence M claim follow a vein that strikes east and dips 60 degrees south. The vein is in fine-grained hornblende schist of the Permian to Triassic Kaslo Group, which near the portal contains a lens of grey crystalline limestone. The ore shoot that has been mined is in the hornblende schist near its footwall contact and near the limestone. The ore dump shows a fine-grained aggregate of pyrite, pyrrhotite, galena and sphalerite, quartz and siderite. The vein is reported to have been up to 45 centimetres thick.

In 1907, 7 tonnes were mined, from which 4914 grams of silver and 3094 kilograms of lead were recovered.

Work History

The main workings are on the Florence M Crown grant, developed in the early 1900s, near the boundary of the Fergus and R.F.G. Crown grants. The workings include an adit driven westward approximately 30 metres, from which some crosscutting and stoping was done.

During 1928 through 1930, Princess Creek Mining Co. Ltd. held and explored the area as the R.F.G. group.

In 1971, Hi-Lode Minerals Ltd. completed an 8.5 line-kilometre ground magnetic and electromagnetic survey on the area as the Laurier, Tam-Rak, RFG and Attended Crown-granted claims.

During 2007 through 2011, Goldcliff Resource Corp. completed programs of prospecting, geological mapping, geochemical (rock, silt and soil) sampling and an airborne geophysical survey on the regionally extensive Ainsworth Silver property.

In 2015, Goldcliff Resource Corp. conducted a program of prospecting, geological mapping, geochemical (rock, silt and soil) sampling and a 4.1 line-kilometre ground electromagnetic survey on the area as part of the Ainsworth Silver property.

In 2020 and 2021, Goldcliff Resource Corp. conducted a further program of geochemical (rock, silt and soil) sampling and a 508.0 line-kilometre airborne magnetic, electromagnetic and radiometric survey on the Ainsworth Silver property.