Mineral Resources On-Line Spatial Data

National Geochemical Survey database

National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for sample density is one per 289 square km.

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reduced-size image of the interactive map reduced-size image of the interactive map
Continental US Alaska
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KMZ, compressed, 2.2M bytes
Show in your GIS using OGC WMS:
Download data for geographic areas you choose
Notes on using these data within ArcGIS
Get the entire data set
Shapefile (74,409 samples, 5.2MB .ZIP package)
a subset of 53 attributes: ICP40, As, Se, Hg, excludes standards
dBase file (77,212 records, 19.6MB .ZIP package)
all 287 attributes, includes standards
CSV file (77,212 records, 13MB .ZIP package)
all 287 attributes, includes standards
National Geochemical Survey - Full documentation
Complete report on the web including summaries of component datasets used to compile this resource, maps showing county-by- county average concentration of elements, and comprehensive explanations of the analytical methods.
[Outline] - [Questions & Answers] - [Plain text]
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Page Contact Information: Peter Schweitzer
Page Last Modified: Wednesday, 15-Feb-2017 10:05:33 MST