The Little Edna occurrence is reported to be located on the east fork (Plumb Creek) of Birch Creek, about 18 kilometres northeast of the community of Atlin.
The area is underlain by mafic volcanics of the Upper Mississippian to Permian Nakina Formation (Cache Creek Complex) and Upper Mississippian to Permian ultramafic rocks (Cache Creek Complex). The Mount Leonard Boss, a small stock which is part of, but separated from, the Late Cretaceous Surprise Lake batholith (Surprise Lake Plutonic Suite) intrudes the country rock to the northeast of the area of interest.
A quartz vein, 1.8 to 2.4 metres wide, strikes north-northeast and dips 85 degrees west through a stratified series of hard, black, fine-grained rock. The vein contains pyrite, pyrrhotite and chalcopyrite. Samples were reported to contain some gold and silver (Geological Survey of Canada Annual Report, Volume XII, Part B, 1899).
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 Ltd. released results of its 2020 field program on its Ruby Creek property which includes the Little Edna showing. The southwest portion of the Ruby Creek property includes the Birch Creek (104N 031), Boulder Creek (104N 073) and Lakeview (104N 009) showings. At the Little Edna showing, previous operators focussed on the more prominent north striking and steeply dipping gossanous structure hosting polymetallic base metal sulphides and silver mineralization with no significant gold. During the 2020 field program, gold mineralization was discovered in separate quartz veins on the periphery of the main Little Edna structure. The gold mineralization is hosted within narrow, 5- to 20-centimetre-wide, steeply dipping, northeast striking, en echelon quartz-carbonate veins that appear to widen toward Birch Creek. Birch Creek is interpreted to be a major fault and conduit for hydrothermal fluids responsible for the placer gold in the area. Anomalous gold values were encountered in three of the four vein grab samples. The samples were also anomalous in bismuth and tellurium and absent in base metal mineralization. The highest-grade sample (1905464), taken 30 metres south of the Little Edna structure, yielded values of 6.03 grams per tonne gold and 51.6 grams per tonne silver (Press Release - Stuhini Exploration Ltd., May 4, 2021; Assessment Report 39374).
In 2021, an airborne SkyTEM survey was conducted by Stuhini on the Ruby Creek property, which revealed a number of regional trends across the property.
