The Fifty area is underlain by Devonian metadsedimentary and metavolcanic rocks of the Stikine Assemblage. The Devonian Forrest Kerr Pluton is in contact to the immediate west of the Stikine package. Plutonic rocks consist primarily of Late Devonian granite and diorite.
Exploration in 1990 by Avondale Resources in the Fifty Zone included diamond drilling, trenching, prospecting and geophysical surveys. The area is a broad zone underlain by andesite in contact with fine grain tuffaceous sediments and carbonaceous argillite. It is an area where several auriferous arsenopyrite and minor chalcopyrite bearing quartz veins occur.
In 1990, trenches cut into the northeastern Fifty zone where extensive carbonate altered and quartz veined andesite occur and where a soil sample had yielded a gold value of 2370 parts per billion. Results of this trenching were generally disappointing with only two narrow, weakly mineralized structures encountered.
The Whistler occurrence is located immediately north of the Fifty zone and comprises a discontinuous, pinch and swell quartz-carbonate vein occupying a narrow shear zone. Trenching and prospect sampling have yielded significant gold values at the nearby Whistler showing where visible gold was discovered and a grab sample assayed 110.4 grams per tonne gold was obtained (Assessment Report 20562). At the nearby Coconut showing, a grab sample taken from a small hand dug pit assayed 23.79 grams per tonne gold (Assessment Report 20562).
Diamond drilling by Avondale Resources in 1990 included two holes in the Coconut area and one at the Whistler showing. The drilling was a simple test for possible down dip extension and expansion of the narrow but high grade gold veins located on surface. Overall drill results were discouraging from all three holes.
Refer to the Forrest occurrence (104B 380) for a common work history of the Forrest Property.