On the Gab claims, the southwestern part of the property is underlain by andesite and andesite agglomerate of Permian age which are part of the Mississippian and Permian Stikine Assemblage. A major northeast trending thrust or reverse fault bisects the property (the McLymont Fault zone). Mineralization may be related to this major structure.
Mineralization on the property is associated with skarn development within the lower sequence of sediments in the overthrust package of rocks. The mineral assemblage consists of massive to disseminated magnetite, barite, pyrite and chalcopyrite with associated gold values.
To the north the rocks are predominantly sedimentary units of Paleozoic age consisting of crinoidal limestone, chert, quartzite, argillite, and slate.
The Gab Northwest showing is reportedly located near the centre of the Gab 7 claim along this northeast trending fault structure (McLymont fault). The Gab Northwest showing contains tetrahedrite, malachite and barite mineralization which is thought to be related to the other gold-bearing skarn mineralization in this area (George Cross Newsletter #180, September 19, 1988).
Several samples anomalous samples were taken along the McLymont Fault in 1988 on the southwest part of the Gab 7 claim. One sample assayed 360 parts per billion gold and 32.5 grams per tonne silver (Assessment Report 18506). This may be the zone reported in the George Cross Newsletter above, though it is more to the southwest.
In 2013, electromagnetic (ZTEM) and aeromagnetic geophysical surveys by Romios Gold Resources defined priority geophysical targets of interest near the Gab Northwest occurrence, including Magnetic targets M10' and M10 just west of Conductive target Z4, having a northeast-trending conductive lineament (Figure 20. Assessment Report 35016).
The 2018 aeromagnetic survey on the Newmont Lake property showed that the Gab Northwest showing is located along an intense magnetic high just north of VTEM anomaly #1 which is up to 2.4 kilometres by 1.2 kilometres in size. It is also reported that a significant portion of this VTEM anomaly has a coincident aeromagnetic high.
Structural and orthophoto interpretation work was performed on the Gab 5 to 10 claim area in 1987 on behalf of Northwest Gold Syndicate (Assessment Report 17210). A 105.67 kilometre airborne magnetic and electromagnetic survey was completed. Minor prospecting occurred on the Gab 7 and 9 and Ken zone.
During the 1988 field season, geological mapping, prospecting and trenching was carried out over the Gab 7, 8 and 10 claim area for Pezgold Resource Corporation. Zones where work was done included the Ken, Glacier and North and South Cuba zones. The Camp Ridge and Cuba showings were discovered in 1988 and probably the Gab Northwest (Assessment Report 18506). A total of 398 rock chip samples were collected from the claims. A modest drill program totalling 760 metres was designed to initially test the strength and continuity of these various zones. Six short holes totalling 456 metres tested the Ken Zone.
In 1996, Connecticut Development Corp carried out a geological and geochemical investigation on the INCA 3 claim which covered most of the previous Gab 7 claim. The work included reconnaissance 1:10000 geological mapping, and limited rock (3 samples) and stream silt (9 samples) sampling.
In 2013 Geotech Ltd. carried out a helicopter-borne electromagnetic (ZTEM) and aeromagnetic geophysical survey for Romios Gold Resources Inc over the Newmont Lake Block, comprising parts of the Newmont Lake property (Geophysics Report, Assessment Report 35016, Appendix VI). The following 21 mineral occurrences were covered by the survey: Ken (104B 027), 72 (Dirk) (104B (114), Camp (104B 126), Northwest (McLymont), (104B 281), Jazzman (104B 282), Ridge (104B 325), Gab Northwest (104B 333), GAB 12 (104B 335), GAB 11 (104B 336), NEW (104B 379), Telena (104B 428), Bren (104B 429), Arseno (104B 432), Mon 2 (104B 433), Glacier Zone (104B 438), Camp Ridge (104B 441), Kirby NE (104B 442), Black Bear (104B 459), 2Bad (104B 460), Bridget (104B 462), O'Neil (104B 463).
More than eighteen discrete magnetic anomalies (M1-M11) have been defined by the magnetic survey and more than half (9) are reported to be unexplained geologically. The ZTEM surveys have defined both conductive and resistive signatures that relate to bedrock geology on the property, to depths extending to greater than 1 to 2 kilometres.
More than twelve prominent resistivity highs (R1-R9) were defined by the ZTEM survey. Most partially correlate with the more than eighteen magnetic anomalies and are interpreted to represent potential targets for porphyry-type magnetite-enriched potassic alteration. Fewer than six prominent resistivity lows (Z1-Z4) were defined and were reported to be for the most part longer, lineament-like conductive zones that lack magnetic signatures.
In 2014, Romios Gold Resources Inc. conducted a prospecting and sampling program that included the evaluation of various showings and mineralized occurrences on the Newmont Lake and Trek Properties. A total of 314 rock chip samples and reconnaissance rock samples and 26 stream silt samples were collected.
In 2015, Romios Gold reported that a program of additional prospecting and sampling was carried out on the Burgundy Ridge discovery (Exploration and Mining in British Columbia 2015, page 135).
No work is reported for 2016 or 2017.
In January and February 2018, Geotech Ltd. carried out a helicopter-borne Versatile Domain Electromagnetic (VTEM) and aeromagnetic geophysical survey on behalf of Romios Gold Resources Inc. The survey covered three claim blocks: DIRK, KEN and NORTHWEST comprising parts of the Newmont Lake property and covered a total of 714 line-kilometres (Assessment Report 37492, containing Geotech Ltd Geophysical Report (Appendix Two)). The GAB Northwest occurs within the Northwest Block which also covers the following mineral occurrences: Northwest (McLymont), (104B 281), Jazzman (104B 282), Gab Northwest (104B 333), Cuba South (334), GAB 12 (104B 335), GAB 11 (104B 336), Arseno (104B 432), Syenite (104B 439), Cuba North (104B 440), Camp Ridge (104B 441), Kirby NE (104B 442), Kirby SE (104B 443), Thumper (104B 445), Black Bear (104B 459), Ray (104B 696), Arseno Ridge (104B 709), Vera (104B 710), Gerry (104B 713). The Gab Northwest occurs on a magnetic high or near the edge of it. A significant VTEM anomaly (Anomaly #2) occur from 1 to to 2 kilometres south to southeast.
In December 2018, Crystal Lake Mining announced that it had acquired a 100 per cent interest in the 436 square kilometre Newmont Lake Project from Romios Gold.
In 2019, Crystal Lake conducted a drill program, on the Burgundy Ridge prospect area (104B 325) and the Northwest deposit. They also conducted extensive grassroots exploration in the Chachi corridor which includes the Cuba-Thumper trend. This trend is found between the Cuba prospects (104B 334 and 440) in the north and Thumper (104B 445) to the south. The trend is characterized by a high-grade high-grade silver-zinc-copper-lead barite system.
See Northwest (104B 281) for details of work after the amalgamation of tenures by Romios Gold Resources Inc in the 2000s, when airborne geophysics was done over significant land areas and some specific work on various occurrence.