Zinc dispersion in the Wisconsin zinc-lead district

Fluid inclusions and biomarkers in the Upper Mississippi Valley zinc-lead district; implications for the fluid-flow and thermal history of the Illinois Basin

“…Lewan and others (1986) Alexander and others (1986), Strachan, Alexander, van Bronswijk, and Kagi (1989), and Strachan, Alexander, Subroto, and Kagi (1989 (±methane) during conodont alteration, which has been shown to retard the alteration process (Rejebian and others, 1987). Our calculations are in general agreement with the results of Lavery and Barnes (1971), who calculated 250,000 years for the formation of an orebody in the Upper Mississippi Valley district, assuming a metal concentration of 35 ppm zinc in the mineralizing fluid. The assumptions built into our numerical calculations make our 200,000-year time estimate for sphalerite deposition a maximum.…”

Hydrothermal Processes: The Development of Geochemical Concepts in the Latter Half of the Twentieth Century

“…That duration is very similar to our earlier approximation of 250 ka from endogenic organic transport (Gize and Barnes, 1987) . The duration had also been established by a very different method based on diffusion from mineralising channels into the surrounding host rocks as follows (Lavery and Barnes, 1971) .…”

“…The third stage of digesting the data around a coffee table and the computer can be exhilarating . That is the reward Model of zinc dispersion into carbonate host rocks adjacent to the North Gensler orebody, Wisconsin (modified from Lavery and Barnes, 1971).…”

Lithogeochemical patterns around Pb-Zn mineralizations in Dinantian carbonate rocks of (eastern) Belgium

“…The important influence of the non-carbonate phase on the distribution of the trace elements in carbonate rocks is a well-documented phenomena (Barber 1974;Pascal 1979;Dejonghe 1987;and others). As long as selective dissolution techniques are not more adequate, interference of these noncarbonate components will be present (Barber 1974 Kranz (1976) from the discordant Pb-Zn mineralizations from the eastern Alps (Wettersteinkalk) and by Lavery and Barnes (1971) from the Wisconsin Zn-Pb district (see also Barnes and Lavery 1977). The data reported by Ineson (1969Ineson ( , 1970 from the mineralized Dinantian limestones of the Pennine and Derbyshire ore fields are comparable.…”