Mineralization at Whisker Valley consists of a series of narrow high-grade sulfide-bearing quartz veins hosted within the Burlington Granodiorite intrusive (early Silurian - 430 MA). The quartz veins predominantly occur along the contacts of a series of east-west trending mafic dykes and occasionally felsic dykes both of which intrude the Burlington Granodiorite. Alteration zones measuring 2-3 metres in width envelope the mineralized gold bearing quartz veins and is characterized by moderate to strong hematization, sericitization and chloritization. The intensity of alteration dissipates outward from the quartz veins. Rehealed brecciated zones are commonly noted proximal to the veins and indicative of a structural environment characterized by predominantly brittle deformation. Localized fault offsets of the mineralized quartz veins have been identified in the Ben, Jackson and Gary trenches. Sense of movement along these structures is providing a useful tool in ongoing exploration efforts to trace the vein system east-west along strike.
The Whisker Valley veins are sulfide rich, generally ranging between 10 to 30% (Figure 3). Pyrite is the primary sulfide mineral with locally abundant chalcopyrite, galena and sphalerite. As a result, the veins have been proven to exhibit an induced polarization response. IP surveys by Maritime have been successful in identifying other anomalies in the immediate area surrounding the Whisker Valley quartz veins and drilling is being planned to test these targets.
The Whisker Valley property encompasses part of the King’s Point Collapse Caldera Complex. The widespread occurrence of mafic dykes cutting all lithologies across the property is interpreted to be related to deep rooted structures within the collapse caldera environment. The extent of the Baie Verte fault situated adjacent to the Whisker Valley property boundary likely provided the feeder system to access the gold rich vent’s at depth. Post depositional tectonic related structural events in the region, combined with the anisotropic contrast between the mafic dykes and the rocks they intruded are thought to have created dilation zones along the margins of the mafic dykes and thus a favourable location for the influx and entrapment of gold bearing fluids deposited during subsequent mineralizing events.
The gold bearing quartz veins at Whisker Valley are epigenetic and of similar style to that seen at Hammerdown. The east-west trend of the Whisker Valley quartz vein system is identical to the trend of the strongest gold vein development at Hammerdown and represents a new target direction to explore for gold deposits in the region. Historical mineral exploration followed the regional northeast geological/ structural trend. As a result, many of the newly discovered east-west trending productive gold vein systems were missed. Maritime is currently evaluating the historical exploration work to help inform the next phase of work at Whisker Valley.
In early 2018, a detailed Induced Polarization (IP) survey was completed by Maritime, which recognized the sulphide bearing gold veins (see press release dated September 26, 2018). This survey extended the apparent east-west strike length of the vein system from the 250 metres length exposed in the trenches to 500 metres. The IP anomalies associated with the veins is still strong at the 50 metres depth, the vertical limit of detection for this survey.
The drill hole traces are shown on the IP Anomaly map (Figure 1.), indicating the position of the three known vein systems at Whisker, drawn as red lineaments in IP Anomaly “A”. The drill holes are also plotted on the Whisker Valley Trench map (Figure 2) and the major intersections are shown, along with some of the 2017 trench channel sample results (see press release dated February 13th, 2018).
Table 1. Significant Drill Hole Intersections – Whisker Valley Phase 1 Diamond Drill Program (2018)
|Vein/Zone||Drill Hole||From (m)||To (m)||Width(m)||Au (gpt)|
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