The South Zinc occurrence is located on the informally name Hamburger Hill, east of the Bear River and north of Akie Creek. The Akie (MINFILE 094F 031) developed prospect is located approximately 3 kilometres to the northwest.
Sulphide mineralization is developed within the Gunsteel Formation, an Upper Devonian sequence of graphitic shales overlying Silurian calcareous siltstones of the Road River Group. The Gunsteel is part of the Upper Devonian to Mississippian Earn Group. Mineralization is typically intercalated within the graphitic shales as fine grained, massive to well-bedded pyrite, sphalerite and galena with appreciable barite and carbonate. Remobilized sulphide mineralization occurs as veinlets in the surrounding lithologies.
The Kechika Trough is bounded to the west and east by carbonates and shallow water clastic rocks of the Cassiar and MacDonald platforms, respectively. The Kechika Trough hosts a sequence of upper Devonian to Mississippian basinal facies clastic sedimentary rocks that is a regional target for SEDEX type zinc-lead-silver deposits, such as the nearby Cardiac Creek (MINFILE 094F 031) deposit. The most favourable horizon at the Akie property is a stratiform barite-sulphide layer, hosted within Upper Devonian shales of the Gunsteel Formation. Mapping on the Akie property has identified a number of northwest-trending panels of Gunsteel Formation shales.
In 2013, drill hole A-13-103 targeting the South Zinc anomaly encountered a narrow 50-centimetre interval of “Nick” style mineralization present at the contact between the Kwadacha reef limestones and the Silurian siltstone. This interval returned 0.90 per cent nickel and 0.39 per cent zinc (Assessment Report 34727).
Work History
The area has been explored in conjunction with the nearby Akie (MINFILE 094F 031) occurrence and an extensive work history can be found there.