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Yukon Geological Survey

YGS Publication Details

Reference Number
A note on preliminary lithogeochemistry of the Fire Lake area
Reference Type
Indian & Northern Affairs Canada/Department of Indian & Northern Development: Exploration & Geological Services Division
Document Type
Annual Report Paper

General Information

Abstract: The Fyre Lake volcanic-hosted massive sulphide (VMS) deposit is located about 160 km northwest of Watson Lake in the Finlayson Lake district of southeastern Yukon. The deposit is hosted by Devonian (?) and Mississippian rocks of the Yukon-Tanana Terrane and occurs close to the contact between chlorite schist and overlying carbonaceous phyllite. Copper-cobalt-gold mineralization occurs in two parallel zones: West Kona and East Kona.

The chemical composition and rare earth element (REE) pattern of chlorite schist which hosts the Kona zones is unique in the Fire Lake area. The data indicate that the protolith of these meta-volcanic rocks has a boninitic affinity and was likely derived from a depleted source region. Mafic meta-volcanic rocks (chlorite schist) elsewhere in this area are tholeiitic and may have developed in an arc or rift-related setting. Analyses of psammitic schists in the hanging wall of the West Kona zone indicate the rocks are felsic in composition and were likely deposited in a mature arc or continental-margin setting.
Authors: Sebert, C. and Hunt, J.A.
Keywords: Fire Lake, igneous petrology, VMS, Volcanogenic Massive Sulphide
NTS Mapsheet(s): 105G
Citation: Sebert, C. and Hunt, J.A., 1999. A note on preliminary lithogeochemistry of the Fire Lake area. In: Yukon Exploration and Geology 1998, Roots, C.F. and Emond, D.S (eds.), Exploration and Geological Sciences Division, Yukon Region, Indian and Northern Affairs Canada, p. 139-142.


Name Comment
Report File is .22 MB Download PDF

Location Map

NTS Mapsheet(s): 105G

Related Occurrences

Name Number Type Status
Fyre Lake 105G 034 Hard-rock Deposit

Related Publications

Number Relationship Authors Title
YEG1998 Contained By Roots, C.F. and Emond, D.S (eds.) Yukon Exploration and Geology 1998