RE:Long term play This Stockhouse wirte up from 2019 does a good job of painting the Atlin exploration approach
https://stockhouse.com/opinion/independent-reports/2019/07/09/brixton-metals-focuses-on-atlin-gold-camp "This doesn't mean Brixton can just go in, drill a few holes and find gold all over the place; that's not how it works. Let's first take a step back to have a look at the bigger picture, as Atlin Goldfields seems to host three different rock types.
The Yellowjacket zone probably contains the low-hanging fruit, as this area has been mined before, a mining permit for up to 200 tonnes per day remains valid and it currently still hosts a historical resource estimate of almost half a million tonnes at an average grade of just over 10 grams per tonne (10 g/t) gold. That's a good start, but we also shouldn't discard the historical drill intervals at Yellowjacket where the previous operators encountered, for instance, 3 meters of almost 48 g/t gold, 5.6 meters of in excess of 500 g/t gold, and in excess of 2.5 meters at 853 g/t gold.
Of course, these intervals containing grades of in excess of 100 g/t gold will always remain the exception, but it does indicate the system is very prospective and prolific, and Brixton will very likely put these zones at the top of its list of priorities."
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"Brixton Metals compares its Atlin gold camp with the Barkerville/Caribou gold camp, also in British Columbia. Some companies use comparable projects/districts that could considered to be a stretch, but we feel Brixton's comparison does make sense. In both districts there has been a rich history of in excess of 100 years of placer mining with a cumulative gold production of millions of ounces of gold. The total production at Barkerville/Caribou (3.4 million ounces from placer activities and 1.2 million ounces from historical mining activities) is better documented than the total gold production at Atlin, but based on historical data and documents, Brixton estimates the Atlin gold camp was responsible for up to 2 million ounces recovered from placer operations.
The Barkerville system is more mature than the Atlin gold camp, as the feeder gold zone at Atlin hasn't been discovered yet, but that's exactly the challenge Brixton Metals is rising to."