The North occurrence is located between the two upper forks of Boulder Creek west of Ruby Mountain, about 21 kilometres northeast of the community of Atlin.

The showing is hosted within the western portion of the Mount Leonard Boss, a small stock removed from the main body of the Late Cretaceous Surprise Lake batholith (Surprise Lake Plutonic Suite) which covers approximately 1100 square kilometres east and northeast of Atlin. The stock is composed of fine to coarse-grained quartz monzonite often referred to as alaskite. The occurrence is just northeast of the western margin of the stock where it is in contact with mafic volcanic and ultramafic rocks of the Upper Paleozoic Cache Creek Complex.

The mineralization is hosted in a quartz vein of unknown width, length, and orientation. Mineralization consists of erratic and patchy wolframite with minor pyrite; no assays from this occurrence are documented. It is located in an area with few outcrop exposures. Trenches shown on Map 52 are oriented northwest suggesting the vein strikes northeast parallel to other tungsten veins in the area.

In 1903, tungsten showings were discovered in this area and this occurrence received minimal exploration work from 1939 to 1943, and from 1970 to 1972. The Ministry of Energy, Mines and Petroleum Resources Preliminary Map 52 (1982) shows three trenches and one adit over this occurrence although there are no specific references to this work. It was likely done in the 1939 to 1943 period.

In 2002, Stirrup Creek Gold Ltd. conducted exploration on the Adanac Claim Group. A total of 28 rock chip, 142 soil and 7 silt samples were taken in addition to geological mapping and 4.1 kilometres of ground magnetometer surveying (Assessment Report 26895).

Between July 2007 and March 2008, Adanac Molybdenum Corporation conducted a major diamond drill-program on the Adanac/Ruby Creek "porphyry molybdenum" property, near Atlin (Assessment Report 30306).

In 2016, two holes were drilled by Global Drilling Solutions on behalf of Zinex Mining Corporation on the Ruby Creek Property, targeting native gold (Assessment Report 36658). In 2017, Global conducted geochemical sampling, drilling and ground geophysics on this property (Assessment Report 37171). In 2018 Global carried out further drilling, prospection, augering and geochemical sampling on this property. It’s mentioned that the Ruby Creek property remains of high interest for not only gold/molybdenum but also for silver and copper based on the exploration work during 2017/2018 (Assessment Report 38256).

In 2020, Stuhini Exploration conducted mapping, prospection, ground geophysics and geochemical sampling on the Ruby Creek property. Rock sample 1893353 returned 0.34 per cent tungsten (Assessment Report 39374). In 2021, an airborne SkyTEM survey was conducted by Stuhini on this property, which revealed a number of regional trends across the property (Assessment Report 39553).