Whole rock geochemical data for altered and mineralized rocks, Red Dog Zn-Pb-Ag district, western Brooks Range, Alaska

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 spreadsheet 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).