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Geostatistical Interpretation of Geochemical Data
Geochemical Distribution of Copper, Lead, Zinc, Silver, Gold, and Arsenic in stream sediments within the Spokane and Wallace 1 x 2 degree quadrangles (1:250,000) , WA, ID, &, MT.
This map presents a geochemical comparison of uranium, and an aggregate of copper+lead+zinc (base metals), and silver+gold+arsenic (precious metals and an associated metal) over the Coeur d' Alene Mining District and its surrounding area.. The stream sediment sampling adn analytical program was completed as part of the 1974-1984 Federal - National Uranium Resource Evaluation program. From the mapped area 3,542 samples were collected and analyzed. From that raw data a geostatistical analysis was completed using E.S.R.I.'s ArcMap program. Anomalous concentrations can be seen in and around known mining areas as well as anomalous locations that may be unrelated to previous active mining sites. Are followup field investigations warranted?
GIS data manipulation and presentations can open new pathways for the evaluation of old areas.