The Frog 1 occurrence is situated in steep terrain 2.5 kilometres southeast of the confluence of the Pitman and Frog rivers in the Cassiar Mountains, approximately 175 kilometres east-southeast of the community of Dease Lake.
Based on its location, the occurrence is in the Pitman batholith, a large Early Jurassic intrusion that is part of the Guichon Plutonic Suite in the Quesnellia terrane. It is composed of well foliated quartz diorite and granodiorite (Geological Survey of Canada Map 42-1962; 1712A; 1713A; Geological Society of America, Geology of North America, Volume G-2, page 500). The rock is characterized by large, prismatic hornblende grains and white plagioclase. Much of the pluton is metamorphosed to greenschist grade, especially near faults.
Mineralization occurs primarily in quartz veins, which are generally 20 to 50 centimetres wide, strike north-northeast and dip west (Assessment Report 16770). Mineralization is also present in the surrounding granodiorite. The veins contain bornite and malachite in large massive blebs and minor chalcopyrite.
The first recorded work in the area was conducted in 1968 by Cordilleran Engineering Limited for Quebec Cartier Mining Company. Geological mapping and stream sediment sampling were undertaken, investigating for copper and molybdenum occurrences.
In 1986, A. McMillan staked the Frog 1 claim. In 1987, A. McMillan completed prospecting on the claim and preliminary assay results indicated values of 14.4 grams per tonne gold, 387 grams per tonne silver, and 34.2 per cent copper (Assessment Report 16770). One sample was screened and found to contain coarse gold. Later samples yielded high copper and silver values of 43.5 per cent and 319 grams per tonne, respectively, but relatively little gold (Assessment Report 16770).
In April 2007, Bitterroot Resources Ltd. staked a portion of the Frog property to investigate elevated Regional Geochemical Survey (RGS) stream sediments samples and in July of 2008, a four-person crew spent a single day on the property collecting stream sediment samples. The results of the survey yielded extremely anomalous copper and molybdenum, with the highest value being 3200 parts per million copper. In 2008, CJL Enterprises Ltd. completed an exploration program of soil and rock sampling and detailed prospecting. Highlights include outcrop sample 672523, which yielded 32.9 per cent copper and 318 grams per tonne silver, and float sample 672522, which assayed 53.1 per cent copper and 356 grams per tonne silver (Assessment Report 30934).
In 2011, International Samuel Exploration Corp. optioned the Frog property (previously the Pit Bullfrog or TK 1-88) encompassing the TK-81 (094E 164), TK-43 (094E 030) and Frog 1 showings. Work completed that year included an airborne magnetic geophysical survey (1029 kilometres) and geological prospecting. A total of 104 rock samples were collected during this time, with mineralization of pyrite, chalcopyrite, bornite and magnetite found in the samples. Seven of the samples returned higher than 1 per cent copper, five samples returned higher than 1 gram per tonne gold, and seven samples returned greater than 10 grams per tonne silver (Assessment Report 32631).
In 2012, International Samuel Exploration Corp. conducted an exploration program of regional reconnaissance, detailed prospecting, talus slope sampling, detailed petrological analysis of outcrop and subcrop mineralization and fluid inclusion studies. In total, 544 rock samples were collected that assayed values up to 4.28 per cent copper, 4 grams per tonne gold, 0.427 per cent molybdenum and 55.1 grams per tonne silver (Press Release - International Samuel Exploration Corp., February 12, 2013). The results of this program showed highly anomalous copper/molybdenum values over a broad region. However, given the remoteness of the project, International Samuel Limited terminated the option in September 2014. In 2015, Peter E. Walcott & Associates undertook a review of geophysical and remote sensing data.
In 2017, Peter E. Walcott & Associates Limited undertook a heli-borne magnetic survey over the Frog North and Frog South properties for C. Greig, L. Warren and A. Walcott. The survey consisted of 135 line-kilometres of detailed airborne magnetics flown with a nominal line spacing.
In 2018, Peter E. Walcott & Associates Limited undertook 3D Magnetic Modelling over the Frog North properties for C. Greig, L. Warren and A. Walcott. The modelling dataset consisted of some 71 line-kilometres of detailed airborne magnetics flown with a nominal line spacing of 100 metres flown the previous year.
