Abstract: Mineralized zones on the Jason property are stratifrom, sediment hosed Pb-Zn-barite deposits that occur in a Late Devonian age marine carbonaceous shale and turbidite sequence. The Jason Property is located 400 km northeast of Whitehorse near Macmillan Pass on the Canol Road. Since the discovery of mineralization in 1975, eighty-nine diamond drill holes have delineated three mineral deposits. In order of their discovery, they are known as the Main, South and End zones. Geological reserves indicated and inferred for the three zones total 14.1 million tonnes averaging 7.1% Pb, 6.6% Zn and 79.9 g/t Ag.

The following questions are the focus of the study::
1) What is the stratigraphic position and setting of the South zone? 2) What is the geological relationship of the South zone to the Main zone? 3) What is the geometry of the South zone? 4) How can the mineralization in the South zone be described in terms of mineralogical and textural facies? 5) What constraints on the processes of ore formation can be demonstrated by utilizing the above studies?

Authors: Turner, R.

Map Scale: 1 : 0

Citation: Turner, R., 1985. Geology of the south zone deposits, Jason property, Macmillan Pass area, Yukon. In: Yukon Exploration and Geology 1983, Yukon Geological Survey, Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division.