TDG Gold Corp. Defines Newberry Exploration Target Area Adjacent to Greater Shasta - Seite 2

The area was historically surveyed with conventional EM-16R VLF instruments and ground magnetometers, which reportedly outlined north-northwest trending linear trends of high apparent conductivity and high apparent resistivity, but the raw data has not been recovered to date. TDG applied the same exploration approach used by Newmont consisting of a soil geochemistry in combination with ground magnetics and VLF surveying.

The survey area was covered by a high precision airborne VTEM, aeromagnetic and radiometric survey in 2017 which delineated several linear geophysical features in the target area including a pronounced linear magnetic susceptibility low coincident with the Creek and JM zones within the Shasta Deposit along strike to the south and continuous to the north to the Newberry prospect. This magnetic susceptibility low likely reflects destruction of magnetite, common in the volcanic and epiclastic rocks in the area, and alteration by hydrothermal fluids and represents the alteration halo around mineralized zones.

TDG conducted ground magnetic and VLF surveys in 2022 and outlined a sharp magnetic gradient from ground magnetics (Figure 2a) and conductive feature from Fraser Filtered VLF EM surveys (Figure 2b) that corresponds to the soil and alteration anomaly and suggest the feature, presumably the expression of the West Fault mapped by Marsden and Moore (1990), and may be associated with mineralization and may extend along strike to the NW and SE for considerable distances beyond the soil grid limits.

Foto: Accesswire

Figure 2 - 2022 Geophysical Results: a) Reduced to Pole (RTP) Ground Magnetics & b) Fraser Filtered VLF (25.2 KHz - North Dakota).

Newberry Geology & Geochemistry

The property has been the subject of reconnaissance scale geologic mapping, but outcrop is sparse and discontinuous. Several faults have been mapped across the property that parallel or overlap with soil geochemical and geophysical anomalies. Grid soil sampling by previous operators has delineated an open-ended, oblong, NNW trending multielement gold ("Au") + silver ("Ag") + lead ("Pb") + zinc ("Zn") anomaly that ranges from 100 m wide at its southern end to 350 m in width at its northern end (Figure 3a-d). The area of anomalous metals is at least 850 m long and extends to the limits of the existing grid and is open in along strike. Metal enrichments from soils within the anomaly are significantly higher than the overall grid background levels (Table 1). Five grab, talus and outcrop rock samples collected by previous operators from within the soil anomaly and area of alteration average 1.6 grams per tonne ("g/t") Au, 66 g/t Ag, 217 parts per million ("ppm") copper ("Cu"), 0.21 percent ("%"), Pb and 0.43 % Zn. Steep slopes suggest some downslope dispersion of the anomalous soils from their likely source areas near the crest of the hill.