The Iskut River (NTS 104B) reconnaissance-scale stream sediment and water survey was completed in 1987 and the resulting field and analytical data were released in 1988. A total of 698 sediment and 684 water samples were collected from 660 sample sites.
BC Geological Survey's GeoFile 2003-20 describes the re-analysis of RGS data from the Iskut River region. Selected elements are grouped into mineral deposit types and three associations are found in this area: As-Sb-Hg-Ag clusters for epithermal sub-aqueous hot spring massive sulphides, Cu-Mo-Ag-Au for Cu-Mo Porphyries and Ni-Co-Mg for Cu-Ni intrusive deposits.
GBC Report 2011-2 details efforts by Geoscience BC to update older government funded regional geochemical survey (RGS) information have been ongoing since 2007. In 2010, drainage sediment samples from previous RGS programs conducted in northern BC from 1978 to 1997 were targeted for reanalysis by aqua-regia digestion ICP-MS. These surveys cover parts of NTS map areas 094C, D, E, L, M and 104B, G, I, O, P. This extremely prospective region contains the Stewart, Toodoggone and Cassiar mining camps which host numerous mineral prospects and producing mines.
A total of 7651 samples were analyzed for 53 analytes by ICP-MS and the data have now been prepared for public release as Geoscience BC Report 2011-2. The digital compilation combines original survey information with new data for base, precious, pathfinder plus rare earth elements. In order to provide full coverage of the study area, data from more recent RGS programs conducted in NTS map areas 104A, H and J have also been included in the compilation.
GBC Report 2013-5 reports that between 1989 and 1993, the Mineral Deposit Research Unit (MDRU) at the University of British Columbia conducted the study "Metallogenesis of the Iskut River Area, Northwestern British Columbia" (the Iskut River Area Project). This project was undertaken in response to intense interest by the mineral exploration and mining industry and the need for an integrated approach to metallogenesis and discovery in the region. The original MDRU maps associated with this project were released in Lewis et al. (2001) as Adobe Acrobat® PDF files of AutoCAD® line drawings.
Geoscience BC and MDRU re-released these highly detailed maps to the public in a modern GIS format. Geoscience BC has converted the original AutoCAD linework to topologically correct features in GIS format and the revised maps are now available as ArcGIS shapefiles and PDF digital maps. The three 1:50 000 scale maps cover an area of approximately 1512 km2 and include NTS map sheets 104B/08, /09, /10 and parts of 104B/01, /07, /11. They illustrate the complex volcano-sedimentary stratigraphy, structural architecture and intrusive complexity of this highly prospective region of the province and provide some of the most detailed and comprehensive mapping data available to the public for this region.
The three 1:50 000 scale maps have been compiled into a single map that covers the same area of approximately 1512 km2 and includes NTS map sheets 104B/08, /09, /10 and parts of 104B/01, /07, /11. The map illustrates the complex volcano-sedimentary stratigraphy, structural architecture and intrusive complexity of this highly prospective region of the province and provides some of the most detailed and comprehensive mapping data for this region.