U.S. Geological Survey Data Series 204 Title-- Geochemical data for stream-sediment, surface-water, rock, and vegetation samples from Red Mountain (Dry Creek), an unmined volcanogenic massive sulfide deposit in the Bonnifield district, Alaska Range, east-central Alaska Authors-- Stuart A. Giles, Robert G. Eppinger, Matthew Granitto, Philip P. Zelenak, Monique G. Adams, Michael W. Anthony, Paul H. Briggs, Larry P. Gough, Philip L. Hageman, Jane M. Hammarstrom, John D. Horton, Stephan J. Sutley, Peter M. Theodorakos, and Ruth E. Wolf Brief Description-- The U.S. Geological Survey is investigating the environmental geochemistry of a group of unmined volcanogenic massive sulfide deposits in the Bonnifield mining district, Alaska Range, east-central Alaska. The pyrite-rich Red Mountain (also known as Dry Creek) deposit is the best exposed of these deposits and displays a remarkable environmental footprint of natural acid generation, metal dissolution, metal precipitation, and self mitigation processes. The deposit and associated alteration halo are dissected by several creek drainages, allowing sample collection above, within, and below the deposit. Sampling and geochemical analysis was conducted in 2003 and 2004 during summer low-flow periods. This data series contains the geochemical and site descriptive data for samples collected from Red Mountain. This report presents descriptions of the deposit setting, methods of study, sample media collection and preparation, analytical techniques for solid and aqueous samples, explanations of abbreviations, field numbers and coordinates, and cited references. The appendices include descriptions of the tables and fields, links to photographs taken at each sample site, and limits of determination for the analytical techniques used. Additional files included with the report are the geochemical database in MS Access .mdb format, the database tables provided in MS Excel .xls format, photographs of the sample sites in Adobe Acrobat .pdf format, and installation software for Adobe Acrobat Reader 7. System Requirements-- WINDOWS Intel Pentium or 100%-compatible processor Microsoft XP Professional or Home Edition with SP1 or SP2, or Tablet PC Edition; Microsoft Windows 2000 with SP2 128 MB RAM 90 MB of available hard drive space for installation of full version of Adobe Acrobat Reader 7 64 MB of available hard drive space for DS-204 report, database and Excel files 225 MB of available hard drive space for DS-204 photographs CD-ROM drive 800 x 600 or higher monitor resolution MAC OS Power PC G3, G4 or G5 processor Mac OS X v.10.2.8 or later 128 MB RAM 110 MB of available hard drive space for installation of full version of Adobe Acrobat Reader 7 64 MB of available hard drive space for DS-204 report, database and Excel files 225 MB of available hard drive space for DS-204 photographs CD-ROM drive 800 x 600 or higher screen resolution Software Installation-- The DS-204_report.pdf is located in the root directory of the CD-ROM. The report and associated photographs are Adobe Acrobat .pdf format. View or print the report and figures with version 7 or later of the program Adobe Acrobat Reader; a program for installing Acrobat Reader 7 is located in the ACROBAT INSTALLER folder. After Acrobat Reader is installed, double-click on the DS-204_report.pdf icon to load Acrobat Reader and open the report. Refer to the built-in help system in Acrobat Reader for assistance with commands. Contents of this CD-ROM—- Root level files: DS-204_report.pdf—-the DS-204 report in .pdf format. Readme.txt—-A brief description of the data series, minimum system requirements for installation of Acrobat Reader and hard drive space needed for the report and the data files, a description of the files on this CD-ROM, basic instructions on installing Acrobat Reader, instructions for correctly generating and projecting geospatial data from the dataset, and disclaimer text. Directory: ACCESS Contents: analytical data as an integrated Microsoft Access 2003 database File: DS-204_database.mdb Directory: EXCEL Contents: analytical data as individual Microsoft Excel 2003 files Files: LeachInfo.xls--Leach sample collection and analysis information LeachWaterChemDataALK.xls--Laboratory alkalinity data for unfiltered, unacidified leachate samples LeachWaterChemDataAnionsFU.xls--Anion geochemical data for filtered, unacidified leachate samples LeachWaterChemDataCationsFA.xls--Cation geochemical data for filtered, acidified leachate samples LeachWaterChemDataHCL.xls--Geochemical data for HCl-leached, ashed splits of vegetation samples LeachWaterChemDataHG.xls--Mercury data for filtered, preserved leachate samples PhotoInfo.xls--Information about the photographs taken at a sample site PrecipitateChemData.xls--Geochemical data for precipitate and salt samples PrecipitateInfo.xls--Information related to the collection and analysis of precipitate samples References.xls--Information about references cited in the database Rock_LeachSolidChemData.xls--Geochemical data on the unleached solid phase of samples collected for leaching RockInfo.xls--Information related to the collection and analysis of rock samples SampleMediaLog.xls--Information about what types of sample media were taken at a site SampleSiteInfo.xls--Site-specific information relevant to all the sample sites SedimentChemData.xls--Geochemical data for stream-sediment samples SedimentInfo.xls--Information related to the collection and analysis of sediment samples SoilChemData.xls--Geochemical data for soil samples SoilInfo.xls--Information related to the collection and analysis of soil samples VegetationChemData.xls--Geochemical data for vegetation samples VegetationInfo.xls--Information related to the collection and analysis of vegetation samples WaterChemDataAnionsFU.xls--Anion geochemical data for filtered, unacidified water samples WaterChemDataCationsFA.xls--Cation geochemical data for filtered, acidified water samples WaterChemDataCationsRA.xls--Cation geochemical data for unfiltered, acidified water samples WaterChemDataFe2+.xls--Ferrous iron data for filtered, acidified water samples WaterChemDataHG.xls--Mercury data for filtered, preserved water samples WaterSiteInfo.xls--Information related to the collection and analysis of water samples Directory: PHOTOGRAPHS Contents: digital images of the 2003 and 2004 sample sites as .pdf files Files: Filenames are the same as the photograph ID numbers with .pdf extensions. Directory: ACROBAT INSTALLER Contents: Acrobat Reader 7 install files for Mac and PC Geographic Coordinates-- Several considerations should be taken into account by the user with regards to geographically projecting the sample site locations. The geographic coordinates are provided in the table tblSampleSiteInfo, in both geographic format (degrees, minutes, seconds) and decimal format. Most commercially available GIS software requires decimal coordinates to plot geographic data. The coordinates were collected by GPS unit using the World Geographic System datum of 1984 (WGS84). The U.S. Geological Survey topographic map of the Healy D-1 quadrangle uses the North American datum of 1927 (NAD27), and is projected into Universal Transverse Mercator (UTM) zone 6N. In order to accurately plot the sample sites on this base map, the WGS datum should first be defined as the collection datum before the site points are projected into UTM. In addition, due to the inherent inaccuracy of the NAD27 datum relative to the WGS84 datum, a geographic transformation may also need to be applied to the UTM projection to correct systematic plotting errors. The sample site locations provided in this report have been accurately plotted onto the topographic base map with ESRI ArcGIS software (versions 8.3 and above), when using the transformation method NAD_1927_To_WGS_1984_17. Data Series 204 web site URL-- http://pubs.usgs.gov/ds/2007/204/ Disclaimer-- This publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof nor any of their employees makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Although all data and software published here have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data, software, or related materials. The U.S. Geological Survey cannot verify the accuracy of the data contained within the electronic files of this report if the data were obtained from a source other than the U.S. Geological Survey.