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TitleGeochemical and indicator mineral data for stream sediments and waters around the Sisson Sn-W-Mo deposit, New Brunswick (NTS 21-J/06, 21-J/07)
AuthorMcClenaghan, M B; Parkhill, M A; Pronk, A G; McCurdy, M W; Boldon, G R; Leybourne, M I; Pyne, R M; Rice, J M
SourceGeological Survey of Canada, Open File 7756, 2015, 62 pages, (Open Access)
LinksCanadian Database of Geochemical Surveys, downloadable files
LinksBanque de données de levés géochimiques du Canada, fichiers téléchargeables
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatreadme
File formatpdf; rtf; xls
ProvinceNew Brunswick
NTS21J/06; 21J/07
AreaMount Pleasant; Sisson
Lat/Long WENS-67.2500 -66.7500 46.5000 46.2500
Subjectseconomic geology; surficial geology/geomorphology; geochemistry; porphyry deposits; porphyry copper; mineral exploration; glacial deposits; tills; till analyses; till geochemistry; stream sediment geochemistry; stream water geochemistry; drift prospecting; drift deposits; dispersal patterns; mineralization; indicator elements; tungsten; molybdenum; tin; bismuth; copper; gold; geochemical analyses; Sisson deposit; Mount Pleasant deposit; indicator minerals; Paleozoic; Devonian; Silurian; Ordovician
Illustrationslocation maps; tables; photographs
ProgramTargeted Geoscience Initiative (TGI-4), Intrusion/Porphyry Ore Systems
Released2015 11 17
AbstractStream sediment and water samples were collected around the Sisson W-Mo deposit as part of the Geological Survey of Canada's (GSC) Targeted Geoscience Initiative 4 (TGI-4). The TGI-4 Program is a collaborative federal geoscience program with a mandate to provide industry with the next generation of geoscience knowledge and innovative techniques that will result in more effective targeting of buried mineral deposits. The stream sampling is part of an indicator mineral case study around the Sisson deposit to document indicator mineral signatures of the deposit in bedrock as well as surficial media (till and stream sediments). Stream sediments have been eroded from till, not from the Sisson deposit, thus patterns in stream sediments reported here reflect both glacial transport and fluvial transport. Indicator elements of the deposit in the <0.1 77 mm fraction of stream sediment are the main ore elements W and Mo and pathfinder elements include As, Bi, Ag, Cu, Zn, In, Tl, and Cd. A total analysis method (INAA) is required to determine the total concentration of W and Mo in stream sediments. Aqua regia/ICPMS is a suitable method for determining the content of the other pathfinder elements. Indicator/pathfinder elements in stream waters include As, Cd, Cu, Cs, W, and Zn. Indicator minerals of the deposit in the <2.0 mm heavy mineral fraction of stream sediments are the main ore minerals scheelite, wolframite, and molybdenite as well as other minerals including chalcopyrite, sphalerite, arsenopyrite, and pyrite. Fluvial dispersal of scheelite and wolframite from the deposit is detectable in stream sediments at least 4 km downstream from the north end of the deposit and 5 km southeast of the deposit in streams that drain the southeast-trending glacial dispersal train. Additional stream sediment sampling would be required to fully document the nature of dispersal of scheelite downstream from the deposit. Molybdenite is not a useful indicator mineral in stream sediments around the Sisson deposit because it is too soft to survive glacial and subsequent fluvial transport. A 2 km (4 km2) spacing of stream sediment samples is recommended to detect the W dispersal train from the Sisson deposit or similar styles of W-Mo mineralization.
Summary(Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI-4) is a collaborative federal geoscience program that provides industry with the next generation of geoscience knowledge and innovative techniques to better detect buried mineral deposits, thereby reducing some of the risks of exploration. The open file reports data for stream sediment samples collected around the Sisson tungsten-molybdenum deposit in west central New Brunswick, This research was carried out as part of the GSC's Targetted Geoscience Initiative 4 (TGI-4) in collaboration with the New Brunswick Department of Energy and Mines. The data reported include stream sediment and water chemistry and indicator mineral data.