Argillites of the Lower Jurassic Hall Formation of the Rossland Group contain quartz veining with pyrite, galena and sphalerite. The Canadian King occurrence is immediately north of the old Arlington mine (082FSW205) and is within the same folded sequence of argillites and quartzitic argillites.
This mine was operated intermittently from 1900 to 1912 producing 440 tonnes of ore. It was operated after 1906 on a lease basis as part of the Arlington mine. Total recovery is reported to be 37,976 grams of gold, 80,526 grams of silver, and 1,224 kilograms of lead.