Lower Jurassic Hazelton Group volcanics (Telkwa Formation) comprised of andesitic to rhyolitic flows, tuff and breccia are intruded by a Jurassic Topley Intrusion. The intrusion is comprised of granodiorite and associated quartz-feldspar porphyry dikes and quartz veins.

Chalcopyrite occurs as disseminations in the intrusive and associated veins as well as in the adjacent andesitic volcanics.

The FG group of 88 claims was held in 1969 by Bethlehem Copper Corporation Ltd. Work during the year included magnetometer, induced polarization, and geochemical soil surveys. Grid line work covered an area north from the Jill area (093L 242) and south to FG (093L 213)

In 1998 a program of line cutting (l6.4 kilometres) and ground EM/magnetic surveys (14.0 kilometres) was carried out in the FG area. On the Len 6 grid a very strong near vertical EM conductor with a north-northeast trend was outlined. The conductor appears to have been cut by a fault with 75 metres off-set and continues off the grid to the south. Smaller northeast conductors are also evident on the Len 6 grid. To the east on the Len 7 claim grid two parallel well defined EM anomalies are located on the north end of the grid.

In 2012, an aeromagnetic program was conducted over the Flute and Lennac properties by Riverside Resources (BC) Inc. The total covered area was 813 square kilometres and the total survey line coverage was 4,444 line kilometres (Assessment Report 33032, 33707F). The FG occurrence was covered by this survey. A report on the survey by Riverside Resources (BC) Inc is found in Appendix D of Assessment Report 33032. However, maps showing the Total Magnetic Intensity and First Vertical Derivative of TMI are found in Assessment Report 33707F.

Refer to Jill (093L 242) for further details.

Refer also to Lennac property occurrences Thezar 81 (East) for information relating to the 2012 airborne geophysics survey.