The Dora (Fault zone) occurrence is located at an elevation of approximately 1300 metres on a west-facing slope, east of Spius Creek and approximately 12 kilometres east of Stoyoma Mountain.
Regionally, the area is underlain by andesitic volcanic rocks of the Lower Cretaceous Spences Bridge Group, which have been intruded by Permian to Lower Jurassic dioritic rocks and Upper Jurassic tonalite rocks to the south.
The Spences Bridge Group consists of two formations: the Pimainus Formation and the overlying Spius Formation. The Pimainus Formation is highly variable, containing lava, tephra, fanglomerate, lahar, sandstone and coal. Volcanic compositions range from basalt to rhyolite. It is most reasonably thought of as a stratovolcano assemblage. The overlying Spius Formation consists almost entirely of amygdaloidal andesitic lava, ranging from pahoehoe to aa types. In some places, the contact is conformable and hard to identify; in others, lacustrine beds separate the two formations.
Locally, the area is underlain by a series of north-northeast–trending series of volcaniclastic rocks of the Pimainus Formation (Spences Bridge Group). These volcaniclastic rocks consist of lithic and crystal tuffs, lapilli tuffs and minor agglomerate. Massive andesite units are interlayered with the volcaniclastic strata.
At the Fault (Discovery) zone, a 7- to 10-metre wide zone of alteration and shearing associated with a fault zone trending 248 degrees and dipping 70 degrees northwest hosts rusty, limonite- and clay-altered gouge zones with anomalous gold values.
Another zone of minor mineralization with slightly anomalous gold values, referred to as the Breccia zone, is located approximately 2 kilometres downslope to the southwest of the Fault zone and comprises a southeast-trending, 1-metre wide quartz breccia vein associated with a small diorite dike. The zone trends 160 degrees and dips 85 degrees southwest. The vein is rusty with some carbonate and weathered sulphides, whereas the footwall of the vein/zone is limonite and clay altered.
A third zone of interest, referred to as the Mare zone, is located approximately 6 kilometres north-northwest of the first zone of mineralization, and comprises subangular to angular chalcedonic quartz float over an area of strong to intense hematite alteration with associated chalcedonic quartz blebs, clots, infillings and discontinuous stringers with local patches of epidote alteration.
In 2006, samples from the Fault zone yielded up to 0.140 gram per tonne gold over 1 metre (Sample 290754), whereas samples from the Breccia zone yielded up to 0.02 gram per tonne gold (Sample 290766; Assessment Report 28946).
In 2007, samples (290184 and 86662) of altered volcaniclastics with quartz stringers, located approximately 0.5 and 1.3 kilometres west and downslope of the Fault zone, yielded 0.151 and 0.210 gram per tonne gold, respectively (Assessment Report 29631).
Later in 2007, continuous soil channel trenches yielded up to 2.99 grams per tonne gold over 7 metres, including greater than 9.00 grams per tonne gold over 1 metre in trench 07-F-2A on the F soil anomaly, located near the Breccia zone; excavator trenching yielded up to 0.92 grams per tonne gold over 6 metres in trench 7 on the area G anomaly, located near the Fault zone (Assessment Report 30155). Several other trenches are also reported to have yielded from 0.193 to 0.512 gram per tonne gold over widths of 1 to 5 metres (Assessment Report 30155).
In 2008, program identified two new areas of mineralization, referred to as the F1 and F2 zones, located approximately 1 kilometre west-northwest and west, respectively of the Fault zone. The F1 zone comprises a silicified and brecciated rhyolite hosting quartz and/or chalcedony stringers with pyrite and minor arsenopyrite exposed over an area of approximately 150 by 25 metres. The F1 zone appears to be cut-off at the north end by an east-west–trending structure and appears to pinch out to the south. The F2 zone comprises a rhyolite and/or rhyodacite with minor disseminated magnetite and altered andesite hosting anomalous gold values. Other zones of interest included the G1 (or EB) zone, located approximately 600 metres west of the Fault zone, and comprise several chalcedonic veinsthat range from 0.5 to 4 metres in width and host anomalous gold values. Channel sampling of excavator trenches on the F1 zone yielded up to 4.87 grams per tonne gold over 1.0 metre in trench 08-CH-02, whereas bedrock chip samples from the F2 zone yielded up to 2.74 grams per tonne gold over 4 metres, including 7.86 grams per tonne gold over 1 metre in trench TR08-04 (Assessment Report 30740). Also at this time, samples from the G1 (EB) zone yielded up to 0.36 gram per tonne gold over 7 metres, including 0.62 gram per tonne gold over 3 metres, in trench TR08-12 and 0.20 gram per tonne gold over 7 metres in trench TR08-15 (Assessment Report 30740).
In 2015, a sample (26228) of altered volcaniclastic from the historical trench TR07-10 on the G zone yielded 0.483 gram per tonne gold (Assessment Report 35996).
In 2016, hand trenching near the F2 zone exposed a 1.7- by 1.7-metre area of variably silicified and clay-altered, brecciated and fractured rhyolite to lesser andesite bedrock with disseminated pyrite. Two samples (ABR-04 and -05) from the hand trench yielded 4.04 and 3.20 grams per tonne gold, respectively (Assessment Report 36290).
In 2019, two rock samples from a 3-metre wide outcrop of silica-altered rhyolite dike with quartz veining in the F1 zone area yielded 1.02 and 0.74 grams per tonne gold, respectively (Assessment Report 39071).
Work History
During 2006 through 2008, Appleton Exploration Inc. completed programs of prospecting, geological mapping, geochemical (rock, silt and soil) sampling, trenching and an 819.7 line-kilometre airborne magnetic survey on the area as the Dora property.
In 2015, John Kreft completed a program of prospecting and geochemical (rock and soil) sampling on the Dora property. Later that year, Qualitas Holdings Corp. completed a program of rock and soil sampling on the area as the SC property.
In 2016, John Kreft completed a further program of rock and soil sampling and hand trenching on the Dora property. Also at this time, Qualitas Holdings Corp. completed a program of soil sampling on the SC property.
In 2018, John Kreft completed a further program of rock and soil sampling on the Dora property.
In 2019, Qualitas Holdings Corp. completed a program of soil sampling on the SC property. Also at this time, Talisker Resources Ltd. completed a program of geological mapping and geochemical (rock and soil) sampling on the Dora property.
