from TDG Gold Corp. (isin : CA87190J1057)
TDG Gold Identifies Second Copper-Gold Porphyry Target at North Quartz, Baker Complex
WHITE ROCK, BC / ACCESSWIRE / April 2, 2024 / TDG Gold Corp. (TSXV:TDG) (the "Company" or "TDG") is pleased to provide a second targeting update focused on the copper-gold-molybdenum ("Cu-Au-Mo") porphyry potential within TDG's ~53 square kilometre ("sq.km") Baker Complex, Toodoggone District, B.C. The North Quartz target area1 (Figure 1) is located ~4 km west of the Trident target1 (see news release Mar 07, 2024) and is bounded by TDG's 100% owned Drybrough target to the north and TDG's former producing Baker Mine to the southwest.
North Quartz historically2,3 had only shallow drillholes, all reporting appreciable base metal concentrations (Table 1). In 2023, TDG assayed for base metals in historical drillcore from the Baker B-Vein and demonstrated up to 100 metres ("m") of > 1.0 % copper equivalent5 ("CuEq") from near surface (news releases Jul 25, Aug 15 and Sep 06, 2023). In 2021, TDG completed two diamond drillholes at its 100% owned Drybrough target with both showing anomalous base metals (news release Apr 13, 2022).
This more modern drill information has been combined with historical and modern soil geochemistry and geophysics (Figure 2) to vector towards a potential porphyry target located beneath North Quartz in a road accessible target area covering at least ~ 5.0 sq.km.
The Baker-North Quartz target area1 is road accessible and located > 1 km from TDG's Baker camp mill and TSF infrastructure. The target area1 is on the north and south flanks of a prominent iron-oxide, gossanous, west-northwest trending ridge (Figure 3) adjacent to a regional scale unconformity (now faulted) between the Toodoggone Formation and the Takla Group volcanic rocks; analogous to the ‘Kyba-Nelson Red Line' unconformity which hosts deposits in the Golden Triangle area of B.C.
Steven Kramar, TDG's VP Exploration, commented: "As we continue our systematic evaluation of our holdings in the Toodoggone, there's compelling data suggesting the Baker Complex has the potential to host one or more copper-gold porphyries. The area is characterized by anomalous base and precious metals in addition to porphyry pathfinder elements such as molybdenum and tellurium, in all geological materials sampled and geophysics suggests the magnitude and geometry of a large intrusive body at depth. The series of Baker Complex target evaluations has already provided two priority drill targets, and we are still evaluating the remaining areas."
Prior Exploration Work
The North Quartz target area1 was discovered in the early 1970s and had several generations of ground-based prospecting and sampling campaigns outlining anomalous copper-molybdenum-lead-zinc-gold-silver ("Cu-Mo-Pb-Zn-Au-Ag") concentrations in soil samples, stream sediment samples draining the area, trenches, and shallow drill holes. At least 7 precious and base metal rich quartz-sulphide veins were identified with orientations orthogonal to the Baker A- and B-Veins, suggesting the mineralization may be related, but not directly to the historical Baker Mine.
Historical Exploration
Historical soils from the North Quartz target area1 outline an open ended 400 m x 450 m multi-element soil anomaly defined by Cu > 100 part per million ("ppm") (ranging from 120-375 ppm); Pb > 100 ppm (ranging from 60-1320 ppm); Zn > 100 ppm (ranging from 100-255 ppm); Mo > 3 ppm (ranging from 3-300 ppm); Ag > 1.5 ppm (ranging from 1.5-9 ppm) and Au >20 parts per billion ("ppb") (ranging from 20-180 ppb).
Historical drilling2,3 included completion of 2,930 metres in 28 shallow holes, of which only 23 % was assayed4 (assayed core / total hole length) for precious metals and an even smaller amount for base metals. The length weighted average ("LWA") grade of all the available assayed core is 0.15 % combined Cu+Pb+Zn with numerous intervals showing highly anomalous base and precious metals (Table 1).
TDG Exploration
TDG completed an airborne ZTEM, magnetics and radiometric survey over the entire Baker Complex and Greater-Shasta Newberry in 2021. Data outlines a large domal high resistivity feature at depth, interpreted to be an intrusive body overlain by a tabular very low resistivity feature that is interpreted to be the ‘sulphide blanket' characteristically above mineralizing porphyry intrusions (Figure 2).
An airborne hyperspectral survey (completed in 2022) indicates apparent zonation from magnesium-rich chlorite to iron-rich chlorite across the area and a broad zone of exhibiting a spectral signature of alunite-silica that are typical in the tops of porphyry copper systems. In 2023, TDG conducted a lithic drainage sampling ("LDS") program (news release Feb 28, 2024) and samples from small catchment drainages sourced in the target area produced results with highly anomalous concentrations of: (i) Cu (92-456 ppm), (ii) Mo (2-11 ppm), (iii) Zn (98-513 ppm), (iv) Au (50-2,950 ppb), and, (v) Ag (0.4-2.62 ppm). The upper limit of these concentrations falls within the top 10 % of the overall survey sample population.
Also in 2023, a ground based very low frequency electromagnetics ("VLF-EM") and magnetic survey was completed, and final data interpretation is underway.
Table 1 - North Quartz Drillhole assay summary.
Hole ID | Incl. | Bearing | EOH | Assayed | Assayed | Length-Weighted-Average ("LWA") Grade2,3 (ppm) | |||||
(°) | (°) | (m) | (%) | (m) | Au | Ag | Cu | Pb | Zn | Mo | |
BK75-15 | -45 | 194 | 63.1 | 26 | 16.4 | 0.14 | 3.95 | N/A | N/A | N/A | N/A |
BK75-16 | -54 | 014 | 63.1 | 9 | 5.8 | 0.14 | 4.48 | N/A | N/A | N/A | N/A |
BK75-17 | -45 | 194 | 66.1 | 29 | 19.2 | 0.17 | 2.50 | N/A | N/A | N/A | N/A |
BK75-18 | -45 | 198 | 63.1 | 8 | 5.1 | 0.15 | 2.32 | N/A | N/A | N/A | N/A |
BK75-19 | -70 | 018 | 62.8 | 12 | 7.3 | 0.13 | 2.78 | N/A | N/A | N/A | N/A |
BK75-20 | -45 | 198 | 63.1 | 24 | 14.9 | 0.18 | 6.46 | N/A | N/A | N/A | N/A |
BK81-05 | -45 | 210 | 177.4 | 4 | 6.4 | 0.17 | 2.80 | N/A | N/A | N/A | N/A |
BK81-11 | -45 | 230 | 153.0 | 9 | 13.5 | 0.53 | 7.74 | N/A | N/A | N/A | N/A |
BK87-20 | -45 | 320 | 123.7 | 20 | 24.8 | 0.07 | 0.94 | N/A | N/A | N/A | N/A |
BK87-21 | -60 | 140 | 93.3 | 15 | 13.6 | 0.13 | 8.28 | 89 | 2209 | 3173 | N/A |
BK88-08 | -60 | 320 | 166.7 | 12 | 20.0 | 0.08 | 4.86 | 226 | 2587 | 2088 | N/A |
BK88-09 | -45 | 130 | 96.6 | 19 | 18.0 | 2.18 | 78.59 | 98 | 575 | 848 | N/A |
BK88-10 | -60 | 130 | 121.0 | 27 | 32.8 | 0.04 | 3.32 | 89 | 117 | 184 | N/A |
BK88-11 | -45 | 130 | 75.3 | 29 | 22.2 | 0.02 | 2.74 | 91 | 107 | 260 | N/A |
BK88-12 | -45 | 130 | 57.0 | 47 | 26.9 | 0.05 | 8.49 | 100 | 262 | 424 | N/A |
BK88-13 | -60 | 130 | 65.8 | 27 | 18.0 | 0.06 | 4.62 | 239 | 254 | 392 | N/A |
BK88-21 | -45 | 220 | 75.3 | 28 | 20.7 | 0.01 | 0.88 | 68 | 16 | 110 | N/A |
BK88-22 | -50 | 090 | 78.3 | 25 | 19.3 | 0.07 | 9.86 | 144 |