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TitleField procedures and results of groundwater sampling in kimberlite from drillholes in the Kirkland Lake and Lake Timiskaming areas, northeastern Ontario
AuthorSader, J A; Leybourne, M I; McClenaghan, M B; Hamilton, S M; Robertson, K
SourceGeological Survey of Canada, Current Research (Online) no. 2003-C11, 2003, 9 pages, (Open Access)
PublisherNatural Resources Canada
Mediaon-line; digital; CD-ROM
RelatedThis publication is contained in the following publications
File formatpdf
NTS31M/05; 31M/06; 31M/11; 31M/12; 31M/13; 31M/14; 32D/03; 32D/04; 32D/05; 32D/06
AreaLake Timiskaming; Kirkland Lake
Lat/Long WENS-80.0000 -79.3333 48.5833 47.3333
Subjectshydrogeology; geochemistry; groundwater; groundwater geochemistry; kimberlites; mineral exploration; Archean; analytical methods; oxidation ratio; conductivity; temperature; Precambrian; Mesozoic; Paleozoic
Illustrationssketch maps; graphs
ProgramTargeted Geoscience Initiative (TGI-1), 2000-2003
Released2003 03 14
AbstractA hydrogeochemistry study of the Lake Timiskaming and Kirkland Lake kimberlite fields was undertaken as part of the Geological Survey of Canada's Targeted Geoscience Initiative (TGI). The goals are to understand the hydrogeology and geochemistry of groundwater in kimberlite compared with the surrounding Archean rocks and to develop a useful kimberlite exploration tool. Groundwater in holes
drilled by exploration companies in the 1980s was sampled at five kimberlite pipes: B30, C14, A4, Diamond Lake, and 95-2. The water was measured in the field for pH, oxidation-reduction potential (Eh), dissolved oxygen, electrical conductivity, and temperature. Preliminary field results indicate that many pH values are unusually high for natural groundwater, with pH levels in B30, C14, and A4 as high as 11.00 to 12.45. Field analyses and pump-recovery tests reveal that a link may exist between the hydration of olivine and the production of CH4 and H2 and groundwater flow.