The Suzi (Earthquake) occurrence is located at an elevation of approximately 920 metres, on a south-facing slope north of Volcanic Creek and approximately 1.5 kilometres east of the Granby River.
Regionally, the Granby River fault, a major structure of the Republic graben, occurs in the area. The fault marks the boundary of the Paleozoic rocks to the west and the Grand Forks Metamorphic Complex, which consists of a thick sequence of quartzites, marbles, gneisses and intrusives, to the east. The Paleozoic sequence consists predominantly of cherts, siliceous argillites, and siliciclastic rocks of the Devonian to Permian Knob Hill Group and undivided sedimentary rocks of the Triassic Brooklyn Formation. These have been intruded by granodioritic rocks of the Cretaceous Anstey pluton and syenitic to monzonitic rocks of the Eocene Coryell Plutonic Suite to the north and west.
Locally, at the Earthquake zone, a timbered shaft exposes massive pyrite mineralization, and approximately 70 metres to the southeast, a short 0.14-metre adit, exposes massive pyrite, chalcopyrite, and malachite mineralization. At least two other shafts or pits, opencuts and a possible 30- to 40-metre long (blocked) adit are reported to expose massive sulphide (pyrite-pyrrhotite) mineralization in a quartz carbonate–flooded zone associated with a shear zone approximately 150 metres west of the Earthquake shaft. The mineralized zones are hosted by chert and greenstone of the Knob Hill Group and within a syenite, possibly of the Eocene Coryell Plutonic Suite.
Later work, in 1990, on the Earthquake zone describes northwest- and northeast-trending structures hosting zones of at least 0.5-metre wide massive sulphides and quartz sulphides extending more than 90 metres along the main structure.
In 1986, a drillhole (DH86-5), located near the Earthquake shaft, is reported to have yielded a 0.25-metre sulphide section assaying 3.0 grams per tonne gold, whereas surface samples are reported to have yielded values of up to 34.2 grams per tonne gold (Assessment Report 15436 and 20110).
In 1987, a drillhole (DH87-4), located southeast of the Earthquake zone, is reported to have intersected a greenstone pelitic breccia with at least two 1.2-metre wide sections of fine disseminated and massive stratiform sulphides yielding 5.0 and 6.2 grams per tonne silver, 0.164 and 0.449 per cent zinc with 0.429 and 0.114 per cent lead, respectively (Assessment Report 20110).
In 1990, samples from the main northwest-trending structure of massive sulphides yielded up to 20.5 grams per tonne gold, whereas samples of quartz sulphides yielded up to 17.8 grams per tonne gold (Assessment Report 20110). Samples of massive sulphides from the northeast-trending structure yielded up to 8.2 grams per tonne gold and 113.5 grams per tonne silver (Assessment Report 20110). Also at this time, a grab sample of dacitic rock hosting massive sulphides, taken approximately 90 metres southwest of the Earthquake shaft, is reported to have assayed 40.4 grams per tonne gold, whereas a 0.2-metre wide sample of massive sulphides from the southeast adit yielded 23.3 grams per tonne gold (Assessment Report 20110). A sample (100710) of quartz pebble conglomerate with pyrite from an opencut and/or shaft located approximately 150 metres west of the Earthquake shaft yielded 25.60 grams per tonne gold and 11.6 grams per tonne silver (Assessment Report 20110).
Work History
Historical adits, shafts and trenches in the area are reported to date to 1899. This is likely related to exploration on the near by Golden Eagle (MINFILE 082ESE079) occurrence.
In 1984, L. Sookochoff completed a program of soil sampling and 2.8 line-kilometre ground magnetic and electromagnetic survey on the area as the Glory claims. The following year, Beverly Development Inc. completed a further program of soil sampling and a ground electromagnetic survey on the Glory claims. Diamond drilling was reportedly performed in 1986 and 1987.
In 1990, MMC Resources Ltd. completed a program of prospecting, geological mapping, and rock sampling on the area as the Suzi claims.
