The Tide North property is underlain by rocks of the Lower to Upper Jurassic Hazelton Group. The sequence includes volcano-sedimentary rocks identified as part of the undivided (on the west) Betty Creek, Mount Dilworth and Salmon River formations.
Assessment Report 32100 described two types of mineralization and/or alteration on Tide North. One consists of abundant quartz plus/minus carbonate plus/minus chlorite veins occurring mainly in the southeast corner of Tenure 524183. The veins are up to 20 centimetres wide and 30 metres long, and commonly occur in swarms. Their prevailing strike is northwest, and it is possible that these veins heal tension fractures associated with folding. Some of these contain traces of pyrite, but most are barren of sulphide minerals. Quartz, sericite and pyrite alteration occurs in zones as wide as 70 metres in the northern part of Tenure 524181. Minor chalcopyrite and malachite were noted in one of the zones. Sample A10-185 assayed 0.94 gram per tonne gold (Figure 4, Assessment Report 32100).
Work History
Assessment Report 8768 describes the first fieldwork of the present era in the Tide North area. The fieldwork was carried out on the Catspaw property, staked in 1980 and enclosing ground on the southernmost edge of the present (2012) Tide North property. The work included geological mapping.
The “Four Js” mineral claims were located in 1982 by Teuton Resources immediately to the north of the Catspaw property. Parts of the Jack and Jim claims covered ground presently enclosed by Tide North. No mineralization was found on the Tide North property. The history of the Catspaw and 4Js properties is summarised comprehensively in Assessment Report 26111.
Assessment Report 19612 describes a program of rock geochemistry on the 4Js tenures, including that part covered by the southern part of Tide North and noted that the property was still relatively unexplored. Assessment Reports 23263 and 23778 noted the presence of banded sulphide mineralization hosted by siltstone and the possible presence of sedimentary textures (i.e., volcanic exhalative). On the eastern margin of the present Tide North property, Assessment Report 14660 described weakly mineralized argillite and Assessment Report 19800 described limited grid work, which identified a plagioclase feldspar porphyry tentatively correlated with the Knipple Porphyry. The latter is a part of the Mt. Dilworth Formation.
Little work was reported from that time until 2005, when the Tide North property was acquired by Rod Kirkham and optioned to Auramex Resources Corp. Work carried out on the property to and including 2011 comprises reconnaissance geochemical work (Assessment Reports 28731, 28574, 29655, 32100 and 33108) and an airborne geophysical survey (Assessment Report 31304).
In 2014, Pretium Resources Inc. completed a 500-metre diamond drill hole at Auramex Resource Corp.'s 100-per-cent-owned Tide North property. The hole was designed to test anomaly B, a deep-lying conductivity target within the Jurassic Salmon River formation, above its contact with Lower Hazelton group volcanic rocks. This stratigraphic interval hosts the past-producing Eskay Creek deposit, 42 kilometres northwest of Tide North. The drill hole intersected a thick folded sequence of highly carbonaceous clastic sedimentary rocks inferred to have been deposited in a quiet basin setting. Preliminary examination shows that sections of the core contain evidence of minor sedimentary sulphide deposition.
In 2017, Auramex Resource Corp. released results from the Tide North drill core between 350 and 500 metre depth in a hole drilled by Pretium Resources Inc. in 2015. Visually the 150-metre interval revealed graphitic argillite with 1 per cent to 2 per cent finely disseminated pyrite throughout and minor quartz carbonate intrusions at a few locations. Four samples were analyzed from 4 different depths. Sample 1 at 352 metres depth assayed 201 grams per tonne silver, Sample 5 at 432 metres assayed 180 grams per tonne silver, Sample 8 at 440 metres depth assayed 1240 grams per tonne silver and, Sample 9 at 490 metres assayed 400 grams per tonne silver (Auramex Resource Corp., News Release September 11, 2017). Other elements assayed for were not elevated in any significant way, for example Sample 8 yielded only 24 parts per billion gold.