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This report presents geochemical analyses for 220 mostly altered and mineralized
rock samples from the Red Dog Zn-Pb-Ag district in the western Brooks Range
of northern Alaska. These data form the basis for a study by Slack et al. (2004a)
on hydrothermal silicification and related alteration in wall rocks of the
Red Dog deposits and the Anarraaq deposit 10 km to the northwest. The sulfide
deposits occur within the Ikalukrok unit (informal name) of the Mississippian
Kuna Formation (Moore and others, 1986). Principal rock types that were analyzed
include black and gray shale, unmineralized bedded barite, mineralized (sulfide-rich)
bedded barite, sulfide-rich silica rock (replaced barite), massive and semimassive
sulfide, vein chalcedony, and Brookian (Cretaceous) vein quartz. For stratigraphic
completeness, data are also reported here for a limited number of unaltered
and unmineralized samples of black and gray shale, laminated carbonate-rich
shale, lithic turbidite, bedded siliceous rock, calcareous radiolarite, and tectonic mélange. Detailed descriptions of the sampled sulfide deposits and their stratigraphic
settings are given in Slack and others (2004a) and Kelley and others (2004a,
b). The geochemical analyses are presented here in Microsoft Excel™ and .dbf (part of .zip file) formats in order to facilitate calculations and plotting
of data. A related geochemical database on unaltered Paleozoic sedimentary
rocks of the western Brooks Range is available in Slack and others (2004b).
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