The Thor occurrence is located about 3 kilometres north of Ruby Mountain on the west side of Ruby Creek near its headwaters, about 25 kilometres northeast of the community of Atlin. The mineralized quartz vein occurs just north of the easternmost extension of the Black Diamond vein (104N 006) and has the same orientation as that vein.

The occurrence is located within 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 70.6 +/- 3.8 Ma (Map 52) and is composed of fine to coarse grained quartz monzonites often referred to as alaskite. The body is occasionally quartz and/or feldspar porphyritic. The stock is separated from the main pluton mainly by ultramafic, mafic volcanic, and sedimentary rocks of the Upper Paleozoic Cache Creek Complex exposed along Boulder Creek, and only a short distance east of the occurrence. Some narrow, light grey felsic dikes occur in the area crosscutting the alaskite.

Mineralization consists of patchy and erratic wolframite with lesser galena, arsenopyrite and pyrite. Molybdenite is also erratic and occurs in large books and rosettes. The dark grey quartz vein hosting the mineralization is 1.5 to 3 metres wide, 280 metres long, strikes northeast and dips steeply to the northwest. In 1968, the best sample result was 0.67 per cent tungsten (WO3), 0.02 per cent molybdenum and 10.3 grams per tonne silver (Assessment Report 1764).

The Hobo-Thor group of claims were staked in 1967-68 by Canadian Johns-Manville Company. In 1968, the company conducted geological mapping and collected 25 rock channel samples.

From 2006 to 2008, Adanac Molybdenum Corporation conducted diamond-drilling on the Adanac/Ruby Creek "porphyry molybdenum" property, near Atlin.

In 2016, two holes were drilled by Global Drilling Solutions on behalf of Zinex Mining Corporation on the Ruby Creek Property, targeting native gold. In 2018 Global carried out further geochemical sampling and drilling on this property.

In 2021, an airborne SkyTEM survey was conducted by Stuhini Exploration on the Ruby Creek property, which revealed a number of regional trends across the property.